The paper discusses the principles of forest management in the state forests of Finland, and the contradictions in choosing between the different land uses. These principles of the forest management are sustainable use of natural resources, economic and effective management, and taking in account nature conservation, protection of environment, recreation services and employment issues in all activities of the Forest Service. Even regional policy affects the management planning in the state forests.
Forests have been economically important for Finnish private forest owners at all times, but the use of forests has changed markedly since 1920s, when forests were mainly used for collecting household timber, and the cuttings were often exploitative because of the farmer’s need for money. The present situation is totally different. Need for household timber is marginally small, and private forestry produces mainly timber for sale. The sales of timber have increased, but due to better forest management the growing stock in the private forests has increased. The article discusses how the changes in values of forest owners has and will affect the stage of private forestry.
The paper discusses how the general trend towards increasing growth and productivity in the European societies is expressed also in forestry. It is reflected, for instance, in the increasing production and productivity of forest industries. Technological progress and call for economic growth require great flexibility from all resources. These pressures for effectiveness and production also concern Finnish forestry and forest management. Industrialization, urbanization and development of forestry have increased the pressure to use forests in recreation, preserving human environment and nature conservation in addition to production of timber. Through the development the definition of sustainability has become wider.
The aim of the study was to describe the total change of forest area in non-industrial private forest holdings in southeast Finland, 1986–1991. The average gross decrease of forest area was 1.7 hectares, whereas the average gross increase was 1.2 hectares. Consequently, the average size of holdings decreased from 32.5 to 32.0 hectares. The most important factors affecting the changes of forest area were the inheritance system, resulting in a decrease of 0.7 ha, and reclassification of forestry land, producing an increase of 0.4 ha per holding. The increase of small, under 10 ha holdings accounted for much of the structural change.
The PDF includes an abstract in English.
The profitability of forestry in the context of recent economic developments in Finland suggest a more systematic analysis of the profit and the cost structure of small-scale forestry than is normally made today. The domestic and international pressure on farming emphasizes the development of rural areas by means of other business than agriculture, in practice this may mean forestry. Financing in terms of the new law concerning agriculture requires projects to be profitable. Thus, the profitability of different lines of production, including forestry, needs to be reported more carefully than is the practice today.
A network of forestry bookkeeping farms covering the whole Austria has existed for 20 years. The organization and the operation of the forestry bookkeeping and the cost accounting system is based on the scientific cooperation and exchange of information between the organizations in charge. The practical experience and recommendations based thereon might be useful for Finland, when implementing a country-wide network of forestry bookkeeping and cost accounting.
The PDF includes an abstract in English.
Different methods of sowing and planting of Norway spruce (Picea abies (L.) H. Karst.) were compared on fertile sites in North Karelia (62°20’N, 29°35’E, 85–120 m a.s.l.). The planting material were 4-year-old bare-rooted transplants, 2-year-old bare-rooted seedlings, and 2-year-old containerized seedlings raised in plastic greenhouse. The sowing methods were band sowing and shelter sowing. Ground vegetation was controlled during the first growing season mechanically or chemically, or the control was omitted totally.
Planting of spruce gave better results than sowing. After eight growing seasons there were sowed seedlings left in 30% of the sowing pots. The average height of them was 35 cm. Seedling survival was best with large bare-rooted transplants (91%). Survival of containerized seedlings was 79% and of small bare-rooted transplants 71%. The average height of large bare-rooted transplants was 131 cm, of containerized seedlings 86 cm and small bare-rooted seedlings 68 cm.
Sowing is not an advisable method for regeneration of spruce due to the small survival rate and slow initial development when ground vegetation is controlled only once. Also 2-year-old seedlings gave a satisfactory result in regeneration. Seedlings raised in greenhouse were more sensitive to frost damage than seedlings grown on open ground.
The PDF includes an abstract in English.
Five ploughed research areas from Finnish Norther Karelia were selected for comparison studies of plough ridges and untouched soil. Measurements were made at a depth of 10 cm in sample plots on both mineral and paludified mineral soil and peatland parts of these areas. In summer 1987 daily soil water matric potential was measured using tensiometers, and volumetric soil moisture content and density were determined from soil samples at two dates during the summer. Water characteristics of the core samples were also determined. On paludified mineral and peat soils the water table depth from the soil surface was measured.
The results indicated that in plough ridges matric potential was lowest. Plough ridges were also seen to dry and wet faster and to a greater degree than untouched soils. In untouched soils, soil water relations and aeration were not affected by the distance to the furrow. The effect of the plough ridge was smallest on peatland, where there was a good capillary connection from plough ridge to the ground water, if the ditches were not very effective. The soil in the ridges did not dry too much to restrict seedling growth. The untouched surface soil in poorly drained peat and paludified minear soil was, at least in a rainy growing season, often and also for long times so wet that 10% minimum air space required for good seedling root growth was not available.
The PDF includes an abstract in English.
The writer reports in this discussion article of four stands in Finland that have died due to a bolt of lightning. A death of a group of trees because of lightning has been relatively uncommon for the forest professionals. The trees may not have no lightning marks. The four sites are presented in detail. Characteristic for this type of death of trees is, for instance, that trees have died within a circular area (of usually 30 m of diameter), only conifers have died, trees die from the top down, sometimes marks can be found in trees in the centre of the area, and under the bark may be brown patches or stripes.
The paper is a review on utilization of peatlands in forestry in the countries of boreal zone: Finland, Norway, Sweden, Canada, the United States and the Soviet Union. First, the concept of peatlands, the types of peatlands throughout the zone are defined, and the use of natural peatlands is described. Finally, the drainage of peatlands for forestry purposes in the countries is reviewed. According to the statistics, a total of 13 million ha of peatlands have been drained in Fennoscandia and the Soviet Union.
The results of regenerating 54 and 36–38-year old strip cuttings were surveyed in the Kivalo Research Forest (N 66°20’, E 26°40’). 15 measurement plots were placed on each strip. The most common forest type was Hylocomnium-Myrtillus type. Regeneration of the strips proved to be slow. Most of the spruces growing on the strips probably originated from the time before the cutting. The average number of stems was 1,155 per ha, of which one third consisted of broadleaved trees. The average volume increment of stem wood after cutting had been about 1 m3/ha/yr, but it was increasing at the time of the inventory. Both the reforestation of the strips and the development of the emergent stands were dependent on elevation and site fertility. Site fertility was indicated by the abundance of Vaccinium myrtillus.
The PDF includes an abstract in English.
Containerized tree seedlings will be used on an increasing scale in the future in different parts of the world. There are number of techniques for the production of small one-year-old seedlings but it has not been possible to develop a completely satisfactory methods for large containerized seedlings production. In the long-term development of pine plantations established with containerized seedlings the greatest problem has been deformation of the root system. With a new method, based on a sheet of peat and root pruning, it has been possible to produce conifer seedlings with a good root regeneration potential and favourable morphological root system development. The use of small containerized seedlings allows an increase in planting density without any marked increase in regeneration costs.
The PDF includes an abstract in English.
This paper is a commentary which summarises the history of the Finnish Society of Forest Science and its connection to the corresponding society in the field of agriculture, the Scientific Agricultural Society of Finland. The original idea when the Scientific Agricultural Society of Finland was founded was that the society would function as a scientific society for both forest scientists and agronomists. However, A.K. Cajander founded a separate academy for forest sciences. The article discusses the implications of this decision.
This paper is a review on the development of sustainable forest management and what has been meant with the term in different times. The article summarises the birth of sustainable use of forests in the world and in Finland, and discusses sustainability in forest management, for instance from the point of view of one forest holding, large clearcuttings performed in Lapland, biological sustainability, business economics and overall planning.
This review discusses whether forests are affected by biotic damages due to present or future environmental disturbances, and do environmental threats, such as air pollution and climatic change, weaken the condition of forest in a way that makes them vulnerable to damages by fungi and insect. The defence mechanisms of trees and factors affecting the development of an outbreak are described. Finally, the ways that air pollution and climatic change may affect biotic damages are discussed.
In this article the methods of forest valuation, especially the sales value tables previously published in Finland are critically examined. In this connection attention is drawn to the rate of interest used in calculating the forest values.
The PDF includes an abstract in English.
The condition of forest road pavements was studied in spring, one week after maintenance and in autumn. The effect of vibrating blade was slightly better than that of pulled drag. Large loose stones couldn’t be pressed into pavement with either of the implements. The use of the vibrating blade was three times as expensive as the use of the pulled drag, however, the blade is suitable for other purposes as well.
The PDF includes an abstract in Finnish.
The area of stands studied by line plot survey was 594 ha. On the basis of the length of the inventory line the estimated proportion of harvesting strips was 14% and that of ditch openings 6% of the area. The calculated strip road spacing was 29 m. The option of the minimum diameter made it difficult to use the number of stems as criterion for thinning intensity. Thinning intensity evaluated according to the basal area had been stronger than recommended with low values of dominant height and milder with high values. The estimated removal according to stumps was 38 m3/ha on the average between the strips. The real removal has, however, been larger than that, as the strip road openings are made in connection with the first thinning.
The PDF includes an abstract in English.
The two introductory books written by emeritus professor William Duerr provide an opportunity to scope the research progress in the forest economic discipline during almost a quarter century. This paper gives a presentation of the books (Fundamentals of Forest economics, 1960, and Forestry Economics as Problem Solving, 1984), and the development of forest economics during the period.
The PDF includes a summary in English.
The Academy of Finland commissioned a review of forest regeneration research. This paper summarises the evaluation. The report deals with the individual research projects and, in addition, the international evaluation group gives several recommendations to develop the forest regeneration research further. The recommendations concern education and training, publications, peer review, experimental design, routine work and extension service, and technology transfer. The paper also includes comments of the Finnish Forest Institute, the Finnish Society of Forest Science and a research scientist on the results of the evaluation.
The PDF includes a summary in English.
In Finnish music national forests and international urban culture meet in an original way. Around the last turn of century, composers believe they had discovered their spiritual roots in nature and especially in the forests. The universal musical language of Jean Sibelius, for example, is based on a deep Finnish identity, the atmosphere of Kalevala. Sibelius’ Tapiola is, thus, among our century’s most powerful musical interpretations of feelings about nature. Nature inspired music is, generally, associated with such positive qualities as beauty, peace, softness, light and joy. A great deal of forest music is based on literature, where natural images have almost always had a positive interpretation.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
Several views to forest’s role in the Finnish folklore are presented. They clearly show how many important dimensions forests have had in Finnish life. Descriptions concentrate on forest-related traditions of ancient times. They give a basis to examining the role of forests in the modern Finnish mind.
The paper is based on a lecture given in the seminar 'The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
The paper presents aspects of town and forest architecture. A feature of the Finnish building tradition is that the forest is allowed to grow next to buildings. After the Second World War a new type of town was created in Finland, ”the forest town”. The most prominent feature of the history of Finnish architecture, from national romanticism to functionalism and up to the present day, is the modification of international ideals to a certain ”forest culture” style.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
The Finnish forest was elevated into an appreciated artistic motif by Werner Holmberg with his picture ”The Finnish conifer forest” in 1858. The second significant period was during national romanticism in the 1980’s, when the decorative beauty of the winter forests was discovered. At the turn of the century, the forest obtained a central national symbolic significance, and many leading artists regarded increased cuttings as a rape of the forests. Since that period, individual artists have succeeded in bringing new features in the art history of our forests.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
In world literature, there are many forests of significance, e.g. oak forest of Mamre and in Dante’s Divine Comedy. Finnish literature has abounded with forest topics since ancient folkore. We have a literature of floaters, loggers and paper workers of industrialized Finland, not to speak of a hunting literature. A major theme is ”from forest to town”, where the first work, Aleksis Kivi’s ”Seven brothers”, is a landmark in Finnish literature. Forests of many other authors are also presented, as well as ancient chants and poems.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
According to universal primitive beliefs, there was a huge pole or tree in the centre of the universe to support the sky. These beliefs gave rise to innumerable customs where both trees and wood have been used to promote health and good luck. Even today, many such customs exist: the Christmas tree, maypole, Midsummer birches, birch whisks in the Finnish sauna, ritual tree plantings etc. In addition to the tree, also the forest as both a protecting and a frightening maternal symbol can be considered as an archetype. Intensive forestry diminishes the archetypal contents of forests, which may be one reason behind critical attitudes towards modern forestry.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
The security provided by forests is approached through various authors’ descriptions and through psychotherapeutic experience. The lap of the forest can recreate early security, protection and unity, for example the lap of mother or father. The forest is also a safe place to externalize inner feelings, desires, fears and erotic images. Intensive forest management and air pollution are nowadays threatening the protective role of forests.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
Sociological studies on the way of life tell rather little about the impact of forests on Finn’s everyday life. The change of life styles, urbanization and middle-class values, signify a detachment from immediate and practical relationship with nature. Those born in the countryside conserve their relationship with nature in their leisure activities, but the urban-born generation needs the mass-media, education, travel and other institutions in order to maintain and develop its relationship with nature.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
Forstästhetik is a programme for forest management, resembling an art manifesto. Forest managers are programme executors. Forest aesthetics is forest investigation from the point of view of beauty. In the case of managed forests, it is possible to ask, what is the manager’s programme and his skill to achieve personal solutions. In forests, the functioning and sustainability of the ecosystem are basic principles affecting all other values. On this basis it is possible to evaluate the competence of taste systems and the logic of their application.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
The main features of the Finnish landscape are a result of preglacial erosion processes and the structural lines of the bedrock. The microstructure of the landscape was created by the Ice Age and its melting processes. Upon this base, human activities have created a palimpsest of cultural landscapes. The article describes the effects of slash-and-burn cultivation, tar production, cattle ranging and some other forest uses to the forest landscape.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
The article compares forest images in provincial and patriotic songs and in forest advertisements by banks and insurance companies. In songs, coniferous forests represent the primaeval nature and broadleaved forests represent culture. Coniferous forest is the real patriotic forest. Forest images in advertisements are twofold: both elevated patriotic forests and profane raw-material forests are found.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
Only a few studies exist concerning the political anthropology and geopolitics of forests. The role of forests in European geopolitics and their role in restraining concentration of power and promoting guerrilla warfare is examined. The shelter of forest cover has been a fundamental factor for the formation of the Finnish people and it has also played an important role in the defence of independent Finland. Clearcuttings, forest roads and modern reconnaissance technology have recently diminished the protective shelter of forests.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
Four basic attitudes towards forests are distinguished: In utilitarianism the forest is seen merely as a means of increasing the standard of living. Humanism strives for the forest use in the service of educational ideals. Mysticism aims at an immediate experience of unity between man and nature. Primitivism denies all human privileges in nature. These attitudes describe that multiple relations exist between man and forest. An essential question is which attitude can best be defended.
The paper is based on a lecture given in the seminar ‘The forest as a Finnish cultural entity’, held in Helsinki in 1986. The PDF includes a summary in English.
This publication consists of 16 papers on importance of forests to Finns, mainly from the viewpoint of various social and humanistic sciences. The articles are based on lectures given to a seminar organized in Helsinki, December 18-19, 1986.
This paper includes preface and list of the speeches in English.
Exposure to phenoxy acids and their effect on worker’s health were studied among 35 exposed forest workers. The control group was 47 non-exposed loggers. The both groups were medically examined before and after their working period including such laboratory analyses as B-differential count, B-thrombocytes. In addition, the exposure to eight ULV sprayers and two clearing saw sprayers were measured in breathing zone.
The mean of phenoxy acid concentrations in urine among all the exposed workers after the working period was 6.5 μmol/l being significantly below the hygienic limit value (14 μmol/l). The mean concentrations of ULV sprayer workers was 7.3 μmol/l and of clearing saw sprayer workers 2.7 μmol/l. The mean of air concentrations among ULV sprayers was 0.23 mg/m3 and among clearing saw sprayers 0.06 mg/m3. No statistically significant differences were noticed in the hematologic parameters and in the enzyme activities of the liver, kidney and muscles between the exposed and control groups before or after the working period. So, it seems that these low exposure levels don’t cause sudden changes in health.
The PDF includes an abstract in English.
This paper includes the publishing guidelines for the scientific publications of the Finnish Society of Forest Science. The Society publishes the series of Silva Fennica and Acta Forestalia Fennica.
A method for calculation of the effect of practical fertilization for economic evaluation is presented and discussed. 55 Norway spruce (Picea abies (L.) H. Karst.) dominated stands on Oxalis-Myrtillus type sites were surveyed five to eight years after fertilization with nitrogen (90-170 kg/ha). The relationships between the fertilization effect and various stand characteristics were discussed. Fertilization increased the growth of the stands on an average by 2.2 m3/ha/year. In total the increase of tree growth during the research period was 17.5 m3/ha. This corresponds to a yield of 525–659 FIM/ha.
The PDF includes a summary in English.
At a joint meeting of the Finnish Statistical Society and the Society of Forestry in Finland on 17.10.1984, papers were presented on the history and mathematical foundations of statistical methods used in forest inventory in Finland. The advantages and applicability of Bayresian methods and methods of spatial statistics were also discussed. In two papers, forest inventories were examined as part of a forest information system and the information demands of the user were discussed.
This article includes eight presentation held in the meeting. The papers have each a summary in English.
Young Norway spruce (Picea abies (L.) H. Karst.) are susceptible to early summer frost damage. Birch (Betula pubescens Ehrh.) naturally colonize rich or fairly rich drained peatlands after clear cutting, and can provide protection for developing seedlings. The report describes the development of spruce stands after various types of handing of the birch nurse crops.
Different proportions of birch and spruces did not have any influence on the spruce stand production. In cases where the nurse crop stand is removed when the spruce stand age was 20 years and height 4 m the spruce suffered badly but recovered with time, reaching the spruce stand growing under a nurse stand within the next 20 years. The height growth of spruce depends on the density of the nurse stand, especially on fertile sites. The development of diameter growth also depends on the density of the nurse trees. Removal of the nurse stand in spruce stands on the sites concerned should be done when the spruce stand is 20 years old and at the height of 4 m.
The PDF includes a summary in English.
Data management is pointed out as a phase of research process. It covers research activities from observation recording to data matrix derivation. Some concepts of logical and physical database implementation are introduced.
The TUTKA -software system is introduced and observed as an instrument of research data management. Attention is paid to TUTKA’s five design criteria. Database implementation and use with TUTKA are observed precisely. Three different phases of implementing a data base are specified. Finally, some aspects to the data management of forest research are presented.
The PDF includes a summary in English.
The Society of Forestry in Finland (now the Finnish Society of Forest Science) publishes two series in the field of forest science, Acta Forestalia Fennica (since 1913) and Silva Fennica (since 1926). In 1972 a list of the publications of the Society from 1913 to 1972 was published in Silva Fennica volume 6 (4). The volume also contained references to about 900 articles and 380 authors.
The present volume includes references to 65 volumes of Acta Forestalia Fennica and 49 volumes of Silva Fennica from 1973–84, which contain over 500 articles. There is also a list of some 410 authors.
The PDF includes a summary in English.
The Society of Forestry in Finland (now the Finnish Society of Forest Science) has drawn up this development programme primarily for the authorities and decision-makers. Forestry research has been divided into three areas: A) Biological forestry research, B) Research into the management and utilization of forests, and C) Research into forest economics and forest policy. Key research tasks are presented under the above-mentioned headings. The programme also deals with the organization of research, post-graduate education, library and information services, publishing policy and international co-operation.
The PDF includes a summary in English.
The Society of Forestry in Finland (now the Finnish Society of Forest Science) arranged on 26th April 1984 a Forestry Science Day centred on the theme ”The role of Forestry Research in Providing a Scientific Basis for Practical Forestry”. Specialists in forestry and forest policy reviewed the role, present situation and future tasks of forest research from different points of view, in their papers. This article includes the talks given in the event in Finnish and an English summary.
1983 was the so-called ”Year o the Forest” in Finland. To mark the occasion, the Society of Forestry in Finland (now the Finnish Society of Forest Science) arranged a series of Studia Forestalia lectures which covered, in general form, a wide range of subjects. 12 of the 14 lectures given in this series are included in this edition.
The PDF includes a summary in English.
Curly birch (Betula pendula var. carelica (Merklin) Hejtmanek) is widely distributed over north-western part or Russia, including the Baltic Soviet Republics and Belorussia. Experiences of growing this decorative species in Soviet Karelia and Leningrad region are presented. Commonly used classifications of the species are described, and recommendations for management of curly birch cultures and production of planting stock in greenhouses are given.
The PDF includes a summary in English.
This article reviews experiments and practical experience of forest management by the selection system in Finland. In an experiment of 25-year duration the annual growth of uneven-aged Norway spruce (Picea abies (L.) H. Karst.) stands was only about 50% of the average annual yield of even-aged stands in normal rotation on the same site.
In Finland the selection system is applicable under exceptional conditions only, viz. In intensively managed park stands and, on the other hand, on very marginal sites, e.g. on peat bogs and mountains near the tree-line. Even normal silviculture, however, may include cuttings which somewhat resemble selection system, e.g. removal of standards or restoration of mismanaged forests.
The PDF includes a summary in English.
A survey was carried out among forest foremen and forest technicians to record their observations on the value of various swamp and forest types as producers of berries and on the effect of drainage of peatlands upon the berry yields. Comparative agreement existed on the best blueberry (Vaccinium myrtillus L.) forest types and on the best lingonberry (Vaccinium vitis-idaea L.) forest types of rather dry upland sites. Fuscum pine swamps or fuscum bogs were considered best for the most part as regards the yield of cloudberry (Rubus chamaemorus L.). The replies showed rather great dispersion.
Agreement existed as well on the relation between drainage of peatlands and the yields of our economically most important swamp berries, cloudberry and cranberry. 90% of those responding were of the opinion that drainage reduces the cloudberry yield in the long term and a full 97% indicated that cranberry crop diminishes as well.
The PDF includes a summary in English.
A literature survey based on Nordic literature deals with the biology, use, harvesting and economy of birch (Betula sp.). According to the results, the easily quantified hard facts are against cultivation of birch: lower growth, poorer production of valuable assortments, lower price of pulp, higher planting costs, and higher harvesting and transport costs than for conifers. The soft facts, which may be true, are not easily measured or their importance evaluated: the possible improvement of soil, decreasing risk of insect and fungi attacks, shelter against frost etc. Due to the differences in the nature of the facts the discussion of cultivation of birch will probably continue.
The PDF includes a summary in English.
The purpose of this study was to examine the use or citations in Finnish forestry publications using source analysis. The material consisted of three of the four main series published in the field of forestry in Finland. The study was confined to three sample years in the middle of each decade during the period of 1910–1980.
The use of references in Finnish forestry sciences was abundant: from 30 to 60 references per report and from 1.1 to 1.7 references per page. The amount of self-citations varied from 6 to 9%. The half-time of the references was, in general, very long varying from 8–12 years in forest economics to 14–17 years in silviculture and forest biology. The amount of ”classical” publications was 4–11%. The amount to Finnish references was large varying from 30 to 59%. Anglo-Saxon series made 22–24%, Scandinavian 11–13%, German 7–9%, Russian 1–3% and French series less than one per cent of all references.
The PDF includes a summary in English.
The concepts of the terms compartment and compartment-wise forest inventory have been studied empirically by repeated delineation and intensive systematic plot samples. The material consisted of 16 study areas of some 8–90 hectares in size in Southern Finland and of more than 1,000 relascope plots. Stands and compartments were found to be rather heterogenous. Alternative photographs, working techniques and test persons were studied. An endeavour for better accuracy in compartment inventories is recommended.
The PDF includes a summary in English.
Length of the regeneration period is a criterion commonly used for comparing different reforestation methods. The time factor should be evaluated using a realistic system for long-term planning. In this paper the preliminary evaluation is made by simplified calculations based on the development series. The slow regeneration method is assumed to be otherwise equal to the rapid one but it has a 5- or 10-years delay at the beginning, and the rotation is thus the final cutting age plus 5- or 10-years delay. Cost of the time delay is taken to be the difference in reforestation costs that makes the rapid and the slow methods equivalent. Calculations are made using zero costs for the slow method; but if the cost of the slow method increases, the critical cost difference decreases very slowly. The final cutting age and the regeneration method must be decided simultaneously. Therefore, the cost of the time delay is presented as a function of final cutting age. By maximizing the average annual revenue, rotation can be even increased if more rapid but more expensive regeneration method is used.
The PDF includes a summary in English.
The study deals with the distribution of above-ground biomass of Vaccinium myrtillus L. along the vegetation continuum segregated by using phytosociological classification method composite clustering. The qualitative characteristics of forest sites corresponding to different vegetational clusters were defined on the basis of indirect gradient analysis of vegetation data and description of tree stand properties in stands in 160 sample areas in Southern Finland.
Six vegetation types differing from each other mainly in abundance of the most constant and dominant plant species were formed. Sample areas with rich grass-herb vegetation, as well as sample areas representing comparatively dry, barren site type were clearly separated from other groups of sample areas. Stand characteristics, particularly the proportional distribution of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) seems to be another important factor affecting the vegetation composition.
The lowest biomass values of blueberry were connected with herb-rich vegetation and shady spruce-dominated stands. Comparatively low values were connected to also other spruce-dominated sample areas. Pine-dominant or mixed pine-spruce stands the biomass values were significantly higher. Even if the site quality is essentially equal, the abundance relationships between Vaccinium myrtillus and other components of the ground vegetation may vary in wide ranges and cause difficulties in practical site classification.
The PDF includes a summary in English.
The aim of this concise interview survey was to collect information about the servicing properties of forest tractors. Ten interviewees gave grades (in a scale from 4 to 10) concerning two servicing properties of various types of forest tractor. The rating covered the general safety during servicing (structural serviceability) and work postures during the work. Four types of forest tractor widely-used in Finland were chosen. The forwarders were of different size and structure.
According to the rating, the lightest forwarder was clearly superior to the other types. This machine was also the smallest in size and the most modern. Differences between the other three forwarders were not quite so clear. The variation between the machines as regards both so-called easy and troublesome tasks was considerable. Lubrication of the articulated shafts and supporting bearings was, however, very troublesome regardless the machine type. The heaviest tractor was considered the most difficult to service.
The PDF includes a summary in English.
The usefulness of some international bibliographic databases for Finnish forest researchers was studied. In this study, 26 gratis online searches from one or more databases was made. The searches were carried out using mainly AGRICOLA, BIOSIS and CAB databases. The most used database was CAB, which includes Forestry Abstracts. The relevance of the references retrieved was evaluated by the users. Recall, precision, novelty and overlap of the references were measured. The users evaluated the results and costs of their search. Some previous comparable studies are reviewed.
The PDF includes a summary in English.
Using literature and a simulator experiment, an ordinary processor and a grapple loader processor were compared in conditions corresponding to thinning later than the first commercial thinning. Visual bucking only was employed in the simulator experiment. The strip road spacing was 30 m and there was no preliminary skidding of the trees. The simulator experiment confirmed the view reached in the literature that work productivity of the grappler loader processor is 20–40 % greater than that of an ordinary processor provided that the stem size is under 0.2–0.4 m3.
The PDF includes a summary in English.
In forestry, a classical method of evaluating the profitability of an outlay is to calculate the internal rate of return. If there are many outlays and returns over a period, analytical determination of the internal rate is difficult and requires simulation methods. However, if there is only one outlay and one return, the computation is easy. In this paper, some formulae were developed for practical purposes. The equations also show how the return changes as the ratio between the return and the outlay changes.
The PDF includes a summary in English.
The purpose of this study was to measure workers’ exposure to MCPA and glyphosate when sprayers connected to the brush saws was used. A non-pressurized sprayer with a pump and a pressurized sprayer where dosage was regulated with manual control were studied. Exposure was measured from the breathing zone and urine samples.
MCPA collected from the breathing zone gathered into alcohol was 0.05 mg/m3 for the pressurized sprayer, 0.02 mg/m3 for the non-pressurized sprayer, and 0.04 mg/m3 (average) for both types of sprayers together.
MCPA in the breathing zone, collected from splashes and fog into a glass fibre filter, was 0.18 mg/m3 for the pressurized sprayer, 0.09 mg/m3 for the non-pressurized sprayer, and 0.12 mg/m3 for both sprayers used together. Glyphosate in the breathing zone, collected into sodium hydroxide was below 0.05 mg/m3.
In five urine samples taken after the work day there was on the average 0.4 mg/l MCPA, while in 21 samples the MCPA contents were under the definition limit (0.2 mg/l).
The PDF includes a summary in Finnish.
The publication comprises proceedings of a conference held in Helsinki in 1981. Forest tree populations are investigated for population genetic structure, mating systems, mechanisms of genetic adaptation and ecological adaptation. Methods and techniques used in population genetic research of forest trees are presented. Much concern is given to applications by means of forest tree breeding, particularly the seed orchard breeding technique. Generally, the application of population genetics in cultivated forests is discussed.
The PDF includes a preface and the presentations of the conference (25 short papers) in English, and a comprehensive summary of the themes of the conference in Finnish.
The purpose of the seminar, arranged by the Finnish Society of Forest Science, was to instigate discussions which would bring up new approaches and research methods for studying forestry problems from both the biotechnical and socio-economical fields. Six papers were presented and over 70 opinions aired at the seminar.
The following points were considered especially important from the point of view of the promotion of forestry research
- Improving contacts between forestry and other branches of science and increasing international exchange of ideas and results.
- Improving the effectiveness of research work through sound planning
- Promotion and gaining benefit from diverse forms of research.
- Arranging the further education of researchers in order to improve the professional standards of researchers.
The PDF includes a summary in English.
Good correlation between radar reflection depth when using a FM-CW radar during winter and bearing capacity measurements during spring breakup was found. Therefore, it might be possible to evaluate the bearing capacity of forest roads using the radar sounding technique.
The PDF includes a summary in Finnish.
The areas of soil cultivation in regeneration sites using different methods in 1976–1979 and the cultivation units in use in Finland in 1979 were studied by means of a questionnaire. Application of soil cultivation methods appears to have become strongly polarized: in Southern Finland disc plowing with wheel tractors are used, whilst in Northern Finland wing plowing with crawler tractors is the most popular method, each being practically the only alternative in the respective area.
The PDF includes a summary in English.
Questionnaires were sent out to determine the volume of wood harvested from peatlands during 1978 and the harvesting problems encountered. In total there were 110 responses which accounted for 8 million m3 of wood harvested, of which 1.0 million m3 (14%) was harvested from peatlands. The largest proportion of wood harvested from peatlands was during the winter. Most of the respondents reportet that they wait for the soil frost to set before harvesting is started on peatlands. Respondents indicated a total of 263 machines bogging down in to the soil or, for 1978, a total for Finland of 750 to 1,000 machines.
The PDF includes a summary in English.
The PDF includes a summary in English.
The effect of soil compaction on transpiration and height increment of Scots pine (Pinus sylvestris L.) seedlings following planting out were investigated in a small-scale pot experiment. Compacted and loosely-packed fine sand and fine-sand moraine were used as the planting substrates. The compacted soils used corresponded to the normal type of soil to be found in tilled forest soils in Finland. The effect of soil compaction on seedling transpiration during water stress was also studied in a separate experiment.
Seedlings planted in compact soil had a higher rate of transpiration than those in loosely-packed soil. The recovery in transpiration, which started halfway through the growing season, was faster, however, in the seedlings planted in loosely-packed soil. Under conditions of water stress, the seedlings planted in compact fine-sand moraine started to reduce the transpiration rate at higher soil moisture values than those planted in loosely-packed soil. No corresponding difference was observed for fine sand. Compaction was not found to affect the overall height growth, but it did at certain time during the growing season.
The PDF includes a summary in English.
In Finland the first trade union in the field of forest work and timber floating was founded in 1946 and the first formal collective agreement was achieved in 1962. Information about the development of wage payments and work conditions (lodging and food) in forest work prior to the formal agreements was dispersed in a number of different sources, and is already partially in danger of being forgotten. The aim of this study was to bring together all available information concerning the matter in question.
The PDF includes a summary in English.
The particle size distribution affects several properties of the soil, thus, the ability to define the texture type of the soil as accurately as possible in field conditions is essential. The soil particle size classification devised by Atterberg (1912) is used in Finnish forestry. The study is based on a small laboratory material. The correlation between some characteristics of the soil particle size distribution, field capacity and cation exchange capacity were determined.
The particle size characteristics such as the relative proportion of different particle sizes, average particle size (Md) and parameters depicting the degree of sorting were determined. The relative proportion of soil particles below 0.06 mm correlated best with both field capacity and cation exchange capacity. Similarly, the average particle size and the degree of sorting correlated well with the field capacity and the cation exchange capacity.
The use of sorting characteristics is not well-suited to the type of soil sample material containing a high proportion of particles of varying size as was used in this material. Such characteristics are probably more easily applicable to the fine sand and sand sediments which are predominant in Finnish forest soils. The most useful particle size distribution characteristics in soils having a great variation in particle sizes were the average particle size and the relative proportion of silt and clay. Thus, the nutrient and water status of the soil can be predicted to some extent by examining the percentage of silt and clay, average particle size and the degree of sorting.
The PDF includes a summary in English.
Ips acuminatus Gyll. (Coleoptera, Scolytidae) is a bark beetle that causes deep bluing in thin-barked Scots pine (Pinus sylvestris L.) pulpwood. It has been shown that this decreases pulp yield. The purpose of this study was to map the southern border of the distribution of Ips acuminatus in Finland. It was found that there have been changes in the distribution of this species during the last three decades. Ips acuminatus has now disappeared from southern Finland. On the basis of the sample plots (134 cutting areas) the southern border of this pest lies on the line running through the towns Vaasa–Seinäjoki–Äänekoski–Jyväskylä–Pieksämäki–Savonlinna–Punkaharju. A certain degree of localisation was observed in the occurrence of I. acuminatus in its distribution area, for instance, differences in its occurrence frequency in cutting areas and even in log and cutting residue piles in the sample cutting area.
It is considered that the most important reasons for these changes in distribution are the increase in logging and changes in the location of cutting sites, and resulting competition for breeding material for the increased population of bark beetles. Furthermore, the long-distance transport of unpeeled logs from the north across the present southern borders may, in the future, contribute to local changes in the southern distribution of Ips acuminatus.
The PDF includes a summary in English.
The aim of the study was to find out the effect of the working place meetings on the increased cooperation between workers and supervisors, the improved work performance, the intensified use of machines and the improved job satisfaction. In the study loggers, forest machine operators and forement were interviewed. The results showed that the working place meeting is a useful means to realise the above-mentioned aims.
The PDF includes a summary in English.
The use and problems of the sucrose inversion method for the study of forest humus and soil are discussed. The method is based on the temperature dependence of sucrose inversion, changes in rotation angle being determined with a circle polarimeter. Average temperatures and thermal sums for forest humus in different forests in Finland were measured, using this method, for a period of ca. 100 days. The results are not considered definitive but are regarded rather as examples. Average temperatures were somewhat higher in the humus of dry and poor heath forests than in that of moist and herb-rich forests, with exceptions that could be explicable by topographic position.
The PDF includes a summary in English.
This paper comments on the article written by Simo Hannelius that is published in the same issue of Silva Fennica (Who is the non-farmer forest owner? Silva Fennica 14 no. 4). Hannelius suggests that researchers dealing with the behaviour of private forest owners should change their classification to agree with the concepts presented in the Farm Economy statistics, and that the recommended concept of farmer forest owner is understood as a forest owner who has taxable net incomes (state taxation) from farming. Other private forest owners would be classified as non-farmers. Veli-Pekka Järveläinen states in his opinion that when distinguishing a farmer and a non-farmer, the key criterion should be the profession, which has been proved to be an important parameter in behavioural research.
The landscape preferences and attitudes of inhabitants of Puolanka, north-eastern Finland, to the effects of silvicultural practice on the forest landscape were studied by a postal inquiry. The effect of silvicultural practice on the forest landscape was mainly negative. Birch (Betula sp.) stands and mixed coniferous and deciduous tree species were the most preferred by the Puolanka inhabitants. The landscape preferences were related to socio-economic background of the inhabitants. The quality of the living environment also influenced the preferences, since uncommon features in the living environment were favoured most.
The PDF includes a summary in English.
The first Finnish paper on aspen (Populus tremula L.) was published in 1759 in Åbo (Turku). After this dissertation, numerous scientific and other articles and reports have been published. In this bibliography about 340 papers are listed. Most of the papers deal only with aspen or other species of the genus Populus. Besides these even those articles have been included which deal with other problems but contain some information on the features of poplars.
The titles are listed without any translation or classification. If an article has a summary, it is shown in the title.
The PDF includes a summary in English.
The forestry working group of the committee for scientific and technical cooperation between Finland and the Soviet Union initiated cooperation work between the two countries in the field of forestry almost ten years ago. The Finnish organizations the Department of Peatland Forestry, the Finnish Forestry Research Institute, and the Institute of Peatland Forestry of the University of Helsinki participated in the activity. From the Soviet Union the participants have been the Ministry of Forestry, the Russian Federation of USSR, and the Forestry Research Institutes of Leningrad and Estonia.
This paper includes the papers presented in the joint symposium arranged at the Forest Field Station of University of Helsinki on 17.9.1979. The 9 Russian lectures and the 8 Finnish ones, are presented either in their entirety or slightly condensed variably in Finnish, English or Russian. The summary of the seminar is presented in English and in Russian.
Research into the forestry behaviour of private forest owners in Finland began 10 years ago. The private forest owners have been dichotomously classified into two groups, farmers and non-farmers. The farmer forest owner was considered to derive his main income (earnings) from agriculture. This classification is compared to the concepts in statistical publication Farm Economy 1976 (Maatilatalous). On the basis of this examination, it is recommended that researchers dealing with the behaviour of private forest owners should change their classification to agree with the concepts presented in the Farm Economy statistics. The recommended concept of farmer forest owner is understood as a forest owner who has taxable net incomes (state taxation) from farming. Other private forest owners are classified as non-farmers.
The PDF includes a summary in English.
In the first part of the study the hindrance of the remaining trees when felling trees by machines working from the strip road in selective thinning was studied on the basis of the literature. In the second part there was geometrically studied the need of schematic thinning in some type stands when bundles are pre-skidded straight-lined to the strip road. In average only 0-1 trees per pre-skidding trail needs to be removed. It was concluded that trees removed from the pre-skidding trail do not significantly increase the need of schematic thinning. Remaining trees do not limit the length of machine booms if the pre-skidding trails are planned during the felling.
The PDF includes a summary in English.
As a part of the scientific and technical cooperation between Finland and the USSR a symposium and an excursion on forest genetics and seed production was organized in Finland in August 1978. The symposium paper presented at Punkaharju are published here in order to bring them available for a wider audience.
The 12 symposium reports deal with the following subjects: Practical application of forest genetic research (A.I. Novoselceva), geographical variability and provenance transfer (E.P. Prokazin, M. Hagman, I. Etverk), variation in wood density (P. Velling), variation of flowering and seed crops in seed orchards (Y.P. Efimov), and natural stands (V. Koski), vegetative propagation (J. Niiranen), seed size effects and early test problems (J. Mikola), quantitative analysis of genotypic and environmental effects (S.A. Petrov), hormonal induction of flowering (O. Luukkanen) and x-ray photography analysis of the ageing of seeds during storage (M. Ryynänen).
The PDF includes a summary in Finnish.
Energy intake of ten lumberjacks in Eastern Finland was estimated by using 24-hour recall. In addition, serum cholesterol and triglycerides were analysed in different lipoprotein fractions. Average energy intake was according to present recommendations in Finland, although there was great individual variation. Serum triglycerides were in the normal range. Five lumberjacks’ total cholesterol concentration was somewhat increased. Average HDL concentration was clearly greater than in men of the same age.
The PDF includes a summary in English.
The paper evaluates the effect of the change in the forest taxation laws which came into force in January 1977 on the value of the taxable cubic metre in each commune, a measure of the mean timber price. The taxable cubic metre is taken into include timber assortments corresponding to the mean planned cut for the area, which are then assessment at their mean local stumpage prices. Account is also taken of the mean costs involved in forestry, which increase from the south of Finland to the north.
The new principles of taxation, based on data from the V and VI National Forest Inventories, give higher values for the taxable cubic metre, and thus heavier taxation, in the Southern Finland, largely by allowing for a higher proportion of saw logs than previously, and lower values, an easing of taxation, in the north.
The PDF includes a summary in English.
The article describes various forms of international contacts in the Finnish forestry research and emphasizes the importance of this cooperation. The relatively small additional resources required to maintain contacts should be safeguarded. When considering the ways in which international contacts could be strengthened, coordination with the aims of the public and private sectors is needed.
The PDF includes a summary in English.
The article is a description of the 8th World Forestry Congress held in October 1978. It gives background information for the papers published in the Silva Fennica issue 13, which includes the Finnish papers sent in the congress from Finland. The paper underlines forest and socio-economic problems of the developing countries, especially in the tropics.
The PDF includes a summary in English.
The objective of the study was to investigate the factors affecting the deterioration of urban forests based on literature. Regression analysis is applied to the material obtained from unpublished material of the latter author. The size of forest stand, and its fertility proved to exercise the greater effect on the deterioration of urban forests. A model based on these factors has been developed and its area of applying is discussed.
The PDF includes a summary in English.
The article describes the two approaches which are evident in planning and management of nature and landscape. One is based on traditional architectural thinking, emphasizing the significance of subjective intuition and practical creative work. The other has evolved from the study of the economic utilization of natural resources, emphasizing the significance of rational thinking and scientific analysis.
This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.
The PDF includes a summary in English.
The article describes the results of the studies made in 24 Finnish housing areas. They show that the building density is not as important as the way of building and the site planning, in the view of preserving natural vegetation in the site. Building on slopes was difficult with modern building techniques because of the extensive earthwork required.
This paper was presented in the ‘Man and the Biosphere’ programme Project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.
The PDF includes a summary in English.
The potentials of forests in abatement of urban noise and air impurities are discussed based on literature and calculations. Excess attenuation of 6–7 dB seems to be possible in noise abatement applying Norway spruce (Picea abies (L.) H. Karst.) plantations. The potential in dust sedimentation is of 10,000–20,000 kg/ha/year and absorbtion to 7 kg/ha/yr. Forests seem also have considerable potential for control of climatic conditions in urban areas. Management of forests in urban environment is discussed.
This paper was presented in the ‘Man and the Biosphere’ programme Project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.
The PDF includes a summary in English.
MAB Project 2 concentrates on the influences of man’s activities on forests with no special consideration to any particular research field. At the same time as the swift development of research methods has brought the natural sciences and forest biology very near to each other, the circle of users of research results in forest biology has widened to include area and city planners etc. In Finland, the main role of MAB Project 2 is to promote mutual exchange between the users and producers of research results in forest biology and to facilitate both national and international co-operation between all research workers and organizations interested in this field.
This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.
Pyynikki is a unique natural park in the centre of the city of Tampere in Southern Finland. Currently, the forest of Pyynikki is losing its vigour because of aging and environmental factors. In 1977 a policy was designed for the regrowth of Scots pine (Pinus sylvestris L.) forest and improvement of the condition of the trees to avoid the situation that the whole pine forest (34 ha) would be regrown at one time. The period of regrowth of pine forest is 60 years. It is accomplished by cutting small openings, on which 4-year old potted pine saplings are planted. Birch will be planted only on two spots. The aim is that the forest scenery will be maintained as undamaged as possible. The condition of the growing forest will be improved by fertilization and thinning.
This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.
The PDF includes a summary in English.
The article examines the problems of interdisciplinary research and the Finnish participation in MAB Project 2, which concentrates on the influences of man’s activities on forests. From the Finnish point of view, the main research areas are the effects of forestry activities which affect large areas, multiple use of forests, forests and environmental pollution, and the effects of energy economy.
This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.
The PDF includes a summary in English.
The term ’multiple use’ was introduced in Finland in the late 1960’s as a planning principle for the use of natural resources. It was hoped that multiple use, in contrast to ’single use’, would be less destructive and more amenable to multiple interests and to more efficient planning. However, the term ’multiple use’ carries several hidden assumptions which superficially at least seem easy to handle but which may, at the very end, prove equally destructive to the planned object. This term generally lacks the dimensions of time and place. In reality, different uses follow in a definite sequence and in definite place. As a planning strategy, multiple use may lead, if carelessly applied, to quite unexpected results that run contrary to the intended purposes.
This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.
The PDF includes a summary in English.
Man and the Biosphere (MAB) programme of UNESCO was launched in 1970. This interdisciplinary programme represents a new integrated approach to research, training and action aimed at improving man’s partnership with the environment. It consists of 14 project areas.
The Academy of Finland and the Finnish Committee for the MAB, in cooperation with the University of Helsinki and the city of Tampere organized a seminar with an aim of reviewing the execution of the Finnish participation in the MAB project No. 2. The seminar took place at Hyytiälä, a forest research station of the University of Helsinki, on August 24–25 1978.
During the seminar, an excursion was made to Pyynikki esker, a unique natural park close to the centre of the city of Tamper. Eight papers were presented and discussed in the seminar. The papers are published in this issue of Silva Fennica.
The PDF includes a summary in English.
The part played by research work in guiding the management and utilization of Lapland’s forests is examined in this publication. The review has been written to mark the 70th anniversary of the Finnish Forestry Society (now the Finnish Society of Forest Science).
The climate in Lapland is very severe and, owing to the lack of experience abroad, forestry has been forced to follow the guidelines set by domestic research activity in Finland. Research work was very active in Lapland the 1910’s, 1920’s and 1950’s, and the main outlines for forestry utilisation were soon established. In the 1950’s, there was a strong trend prevailing to develop forestry, with the result that a change took place in favour of clear-cutting. The cool climate period in the 1960’s caused considerable damage to young plantations. In order to find means to rectifying the situation and to devise new guidelines for forest management, The Finnish Forest Research Institute established a number of research stations in Lapland.
Research activity has had a pronounced effect on the management and utilization of forests in Lapland. Present-day problems have been caused more by the international situation than by difficulties in the management of forests in Lapland.
The PDF includes a summary in English.
The study is the first report of a larger project concerning fire ecology in the Finnish boreal forests. Modern forestry has never been practiced in the Ulvinsalo strict nature reserve (2,500 ha) in Northern Finland in the county of Kuhmo. Forest fires have been uncommon because of mosaic of mineral and peat soils. The forests are mostly Norway spruce (Picea abies (L.) H. Karst.) dominated with Scots pine (Pinus sylvestris L.) often as the oldest trees of a stand. Forest fires were dated by counting annual rings from cambium to the fire scar in pines. 73 stands covering 1,207 ha were surveyed, over 80% of which was on mineral soil.
50% of the area had burned at least once during the life time of the present pine trees. 48 different forest fires were found, the first being from the year 1712 and the latest from 1969. The average time elapsed between the fires was about 82±43 years, and range 18–219 years. It was assumed that the stands where no fire scars were found, had, however, regenerated after fires but no fires have occurred since after that. In latter part of the 19th century 21 forest fires were dated, in the other half centuries only 4–9. This may have been caused by the increased human activity in the late 1800’s. The fire rotation of the area is 280 years, and spruce is almost the only tree species, which can regenerate in the present situation.
The PDF includes a summary in English.
The safety clothing, rubber safety boots, belt with lifting hooks and personal protectors can weight about 3 kg more than the normal work clothing including rubber boots. In order to evaluate the increase off the physical strain in logging work due to them, laboratory tests performed on tread mill were made. The physical strain increased 3–11% as estimated from heart rate and 4–8% as estimated from oxygen consumption measurements.
The PDF includes a summary in English.
This paper describes the principals of the awards given by the Finnish Society of Forest Science, and lists the different acknowledgements conferred by the society.
The aim of the study was to find out the technical and economical applicability of seismic survey methods of sub-surface earth investigations in forest road planning. Two seismographs, SOIL-TEST MD 1 and BISON 1570, were tested in studyin 31 cuts and 3 gravel areas. The devices proved to be usable in field conditions. Sounding one spot costs about 75 Fmk and methods’ rentability is greatly based on the ration between expected and unexpected events, which depends on the areal geology. It is profitable to purchase the device especially if digging out of unexpected bedrock causes high costs.
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The article describes the series of events and the decisions which in the years 1908–1911 resulted in transfer of the field courses in silviculture of the University of Helsinki from the old training region of the Evo Forest Institute in Central Finland, where higher education in forestry had been given since 1860. The establishment of the new training region of Siikakangas and the building of the new Forest Training Station Hyytiälä in 1911–1912 are also described, as well as the arguments behind these decisions and the motives of the forestry faculty of the University of Helsinki.
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A theoretical nomogram was made for estimating the costs of fully mechanized thinning and the driving speed of the machine. Based on this nomogram and the previous studies three harvesting methods were compared; systematic fully mechanized harvesting, selective fully mechanized harvesting, and manual felling combined with whole-tree chipping.
The third method was cheaper than the fully mechanized methods in a pole-stage stand. The choice of the most advantageous chipping station depended on conditions, but the smaller tree size and possibly the reduced damage on the remaining stand favour chipping on the strip road rather than chipping on the intermediate landing or at the mill.
Mechanized systematic thinning was the cheapest method for harvesting in the sapling stand. The required driving speed were so low that ergonomic factors should not hinder its use. Factors related to the future production of the stand do, however, limit its use. Mechanized selective thinning does not seem to be an economic method for harvesting in a sapling or pole-stage stand.
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In this paper the system of collective timber price agreement in Norway is described. The history of »collective behaviour» in the roundwood market can be tracked far back in history, with different degrees of importance, and it has totally dominated the price-formation of roundwood from the 1950’s until the present. In trying to answer the question »What has been the effect of the collective price agreements» a few theoretical market models are used and the empirical data are also employed. Both the theoretical discussion and the empirical data seem to indicate that the forest owners are better off with collective price agreements than with a situation where there are no organized price-negotiations.
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The concepts central to ergonomic research connected with the amount of strain caused by work was studied. A model was made to describe the process of strain. The model includes the following concepts: load or stress, human input, worker, strain, renewal of human resources, output and their hierarchical units. Based on the quality of human input, the forest work was roughly divided into two categories: (1) work demanding primarily muscle activity and (2) neuro-sensory work. In the first group, especially in cutting work, the main part of the human input is intensive consumption of muscle energy. In addition, work load causes accidents, wear of skeletal and muscular systems and processes by noise, vibrations, and climate. Correspondingly, when operating forest machines, the human input is mainly neuro-sensory functions of the central nervous system. Work load causes directly the effects of low frequency vibration and of other work conditions. The model was tested on data from research of forest work.
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Pair numbers of breeding land birds were estimated from line transects data collected in Finland in 1936–76. The changes observed in the bird populations are in this paper compared with data obtained in the Finnish forest inventories, particularly made in 1951–53 and 1971–76. It is concluded that modern forestry has considerable impact on the breeding bird fauna. In general, more species have increased than decreased due to changes in the forests. Areas affected by forestry are more favourable habitats for many species than natural forests, but, on the other hand, there are certain species which are greatly harmed by the effects of modern forestry.
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The aim of the paper was to investigate the potentials offered by trails in guiding recreational activity. The study is based on interviews and questionnaires concerning recreationists using two recreation areas owned by the city of Helsinki in Southern Finland. According to the results, the recreationists visit terrain without trails every time they visit a recreation area. The main reason for this was obtaining varying recreational experiences. The recreationists used, however, the same route nearly every visit, which suggests that trails have a great potential in guiding reacreational activities. Special attention was paid to the role of trails in activities involving physical exercise. The correlation between the socio-economic background of recreationists and their preferences for trails was very low.
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The physical strain put on forest workers and work time consumption during pulpwood cutting were compared when the bolts were stacked at the side of strip road, the strip road spacings being 15–25 m and 26–35 m, and when stacked at scattered points along the cutting strip.
When stacking at scattered points along cutting strip work time consumption was 17–21% and the heart rate 9–12% less than when stacking at the side of the strip road, strip road spacing being 15–25 m. When the strip road spacing was increased to 26–35 m, the time consumption increased by 18–30%, but the heart rate appeared unchanged. This result suggests that the forest worker compensates for increased physical strain caused by an increased stacking distance by changing his working technique and rate and by increasing the number of his breaks.
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The paper describes the use of printed area in some scientific series concerned with forestry. The material consisted of 8 scientific series, the total number of analysed pages being 2,942. According to the results, the use of printed area was more efficient in journals and other similar periodicals which included several scientific papers than in series published as separate issues. The main reason was the more efficient editorial make-up. The Finnish papers included less figures but more tables than foreign series. There were marked differences between series irrespective of the country of origin. The average figure area varied from 60 to 180 cm2 between series, for example. According to the observations there are good possibilities for making more efficient use of the printed area available.
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A method is presented in this study for calculating the basic density of whole tree- and logging residue chips and the results of trial measurements on some commonly used chip sorts. The basic density of Scots pine whole tree chips was found to be 1–18 kg/m3 smaller than that of pine pulpwood of the same age. The basic density of Norway spruce whole tree chips was 4–22 kg/m3 greater than that of similar aged pulpwood. The basic density of birch whole tree chips was 4–16 kg/m3 and grey alder whole tree chips 7–24 kg/m3 greater than pulpwood of the same age. The basic density of conifer logging residue chips was considerably greater than that of pine and spruce whole tree ships.
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The maps concerning the natural distribution of oak (Quercus robur L.) have proved most unreliable in detailed examination. In this paper, the author has collected his observations on natural oak in the westernmost parts of the province of Uusimaa and the easternmost parts of province of Turunmaa, the islands included. Furthermore, the paper includes some viewpoints which must be considered as criteria when determining the naturality of the stand in question. Future borders of oak’s distribution range must be moved farther up north to replace the earlier views of the northern limit of natural oak in Finland.
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The Finnish Society of Forest Science arranged on 16 March 1977 a seminar where targets of forestry research and communication were discussed by scientists, as well as publicists and users of scientific information. This paper includes summaries of some of the speeches and the reports of the workshops. The theme of the seminar was Forest science and practice – Do we understand each other?
The paper introduces the science policy agenda of the Finnish Society of Forest Science that defines the role of the society and the principals that are required from research work.
The aim of this study was to determine under what conditions and with what premises the growing of Betula pubescens Ehrh. is an economically competitive alternative to the growing of Scots pine (Pinus sylvestris L.) in drained peatlands. The basic material consisted of all drainage projects in Ostrobothnia in Western Finland in 1937–38 and 1957–59, according to the archives of the Central Board of Forestry Tapio, including such areas that were at least moderately fertile and had birch dominated young stands or no tree cover. A total of 202 sample plots were measured.
According to the results, the discounted timber yield of the thinned B. pubescens stands is about 10% greater than that of untreated stands. The removing of birch seedlings and the subsequent growing of fully stocked Scots pine is more profitable than growing B. pubescens stands only if the establishment and subsequent development of the pine stand involve no costs. If the site in question is a fertile open drained peatland, establishment of a pine stand is obviously a better financial proposition than a naturally regenerated birch stand. However, if there is already a fully stocked young birch stand on the site, it is more economical to let it grow using a shortish rotation time.
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In the densely populated Central Europe, forestry has always had different functions than in Scandinavia or Canada. Today the increasing pressures on the environment and more numerous demands of the people have put emphasis on environmental management and the demands of recreation in forest management practiced in the area. This paper outlines the trends in the utilization of forests in Central Europe, and especially in the Federal Republic of Germany, due to these changing targets. The regulations concerning forestry in Baden-Würtenber, and the forest plan of the Bavarian state forests are used as an example to clarify the principals of forest management and planning.
This study was carried out on behalf of the Central Association of Finnish Forest Industries (now Finnish Forest Industries Federation) in order to obtain information about the wood raw material situation, to serve, in turn, as a basis for the forest industries’ long-term planning. The study deals with the potential supply of roundwood, industrial residue and forest residue by the year 200 by five wood-supply areas. Examination of the situation during the period of 1972–80 is based on available balances and that concerning the period 1985–2000 in the estimated quantities available for industrial use.
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It has been in Finland discussed to replace the present straight piece rate by a time rate in forest work. The low earnings of aged forest workers, the health hazards, its tendency to cause conflicts and considerable income differences are the main drawbacks of the piece rate and the proneness to increase the labour costs is the essential fault of the time rate mentioned in the discussion. One possible solution for these problems is an efficiency bonus (prevents the labour costs from increasing and decreases the income differences) combined with a bonus for age (guarantees high incomes for aged wage earners), a maximum efficiency standard (prevents health hazards), and a group incentive (prevents conflicts).
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The paper deals with variation in the nitrogen, phosphorus, potassium, calcium and magnesium content of vegetation and soil of young Scots pine (Pinus sylvestris L.) stand of Vaccinium site type situated in Central Finland. The material consists of sequential samples representing soil, ground vegetation and trees taken during summer 1974.
The amount of soluble nutrients in the humus layer decreased in June when maximum growth of trees and dwarf shrubs occurred. The nutrient content of this layer subsequently began to increase towards the end of the growing period.
The variation in the nutrient content of the bottom and ground layers followed a similar pattern. Nitrogen content increases at the beginning of the summer. After this phase it started to decrease and reached its lowest values by the end of growing period. Phosphorus and potassium content increased throughout the growing period.
The nutrient content of the needles and wood were positively correlated with tree height and negatively with the age of material. The highest values for the nutrient content were for new cells.
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The purpose of this study was to gain an insight into research problems and themes in multiple use of forests from a practical viewpoint. An inquiry concerning multiple use problems was sent to 597 organizations whose work related to multiple use of forests. Replies yielded 1,857 suggested research themes which were divided between different uses of forests. About half of the suggestions concerned the relations between timber production and the other uses of forests. The many propositions are due to the fact that timber production in its intensity has strong influence on the other uses of forests. The results of the study have been used in the planning of research in the multiple use of forests.
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In the article some aspects concerning the measurement of environmental factors are discussed. Special attention is given to the following questions: The correct way of determining the active surface in a forest ecosystem, the time factor in measurement processes, and the mutual correlative relationships between the environmental factors. Analysis of the data is also taken into consideration.
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The article is a summary of a long-term research programme which has been prepared at the Finnish Forest Research Institute. The objective of the programme was to define and subdivide the field of multiple use research to be done at the institute, and so improve both the research planning and the coordination of the work in this field between the different research departments.
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This paper examines the changes in forest ownership and the farm properties for sale from a business economic standpoint. The changes in forest ownership are examined on the basis of statistics and literature. The empirical data both for farms for sale and farms sold are based on the purchases made by the National Board of Forestry in 1972.
There are a number of ownership groups actively buying and selling forest land, thus giving alternatives for ownership changes. The National Board of Forestry has been active in the market since 1960. For instance, in 1972 it purchased 60% of the forest estates it was offered. Of the forest area put up for sale, 75% originated from private individuals, and 20% from inheritance sales.
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The paper deals mainly with the effects of jolting of forest tractors and processors on the health and working capacity of the driver. The literature surveyed presents especially the following points of interest: Jolting of the machine may hamper the focusing of the eyes and mastery of the controls. Long-term exposure to jolting may result in reduced sympathetic nervous activity at rest, and may impair an already existing back problem. Workers exposed to vibration, get more frequently gastric changes and changes in reproductive functions than usual. Jolting, as also the other negative physical factors of working environment, must be minimized as early as possible during the design of the machines.
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This paper includes the answer of professor Pentti Hakkila for professor Mikko Kantola who in this issue of Silva Fennica gives some critical points on professor Hakkila’s earlier article (Silva Fennica vol. 9, no. 4 in 1975) on the status and future prospects of forest work science in the Finnish Forest Research Institute. He emphasises that the worry about the forest work reseach presented in his earlier article was not directed towards the research work but towards the financing of forest work science in Finland.
This article is a comment on a previous article in Silva Fennica (vol. 9, no.4) published in 1975, written by professor Pentti Hakkila, titled ‘The status and future prospects of forest work science at the Finnish Forest Research Institute’. It aims at giving some further aspects on the choice of research fields and subjects, and the concepts of result, opinion and research work.
The Finnish Society of Forest Science arranged on 15 January 1976 a research seminar concentrating on forest research policy under a theme of goal orientation and forest sciences. About 70 interested persons participated the day-long seminar. This paper includes the speeches and their summaries, and couple of examples of the results of the workshops.
The study was carried out in order to find out the changes taking place in germination of seeds in certain tree species as a function of gamma irradiation, the height growth of the seedlings produced and the types of phenotypic mutants possibly found in the generation that had received radiation. The tree species studied were Pinus sylvestris L., Picea abies (L.) H. Karst., Betula verrucosa (Betula pendula Roth), B. Pubescens Ehrh., Alnus glutinosa (L.) Gaertn. and Alnus incana (L.) Moench.
Soaked seeds that had received a rather small dose of radiation germinated usually better than storage-dry seeds, B. pubescens being an exception. The damages observed in germination, height growth and the relative number of mutants were greater the higher the irradiation doses. The LD50 dose (germination, 28 days) was as follows in the case of the different tree species (storage dry/soaked): P. Sylvestris 1,500-2,000/2500-3,000, P. abies 1,000-1,500/4,000-4,500, B. pendula 9,500-10,000/7,000-7,500, B. pubescens >10,000/7,500-8,000 and A. Glutinosa 10,000/8,500-9,000 rad. Mass production of different mutants of deciduous trees for ornamental purposes, for example, appears to be easy using gamma-irradiation. On the other hand, the possibility of increasing tree growth remains open for further study.
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The main forest research institutes in USSR as well as schools for higher education in forestry are presented in this article, on the basis of observations made during study tours and the relevant literature. Research in forest genetics, tree physiology and related fields i stressed. The State Forestry Committee leads the regional units of forestry administration and also governs a number of research institutes. Among these, the All-Union Forest Research Institute near Moscow has a central position. Regional institutes as well as those specializing in a particular field within forest research may belong to this category, too. Basic research, on the other hand, is conducted under the auspices of the Academy of Sciences, the Academy of Agricultural Sciences or academies of sciences of the Soviet republics. This type of institute also includes those devoted purely to forestry. Forest education at the university level takes place in schools usually called institutes of forest technology.
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The article reviews the position of the Department of Forest Technology in Finnish Forest Research Institute, among Finnish establishments in research on forest work. In addition, it describes the current research programmes of the departments both in wood harvesting studies and studies on silvicultural work. The equitable aims of the former are to increase productivity, lower the cost level, ease the work and improve job satisfaction, as well as to improve the utilization of wood raw material. The latter aims at e.g. improvement of the biological results.
Future prospects are surveyed from the point of view of the goals imposed by the State on the research and, on other hand, the appropriations earmarked for forest work science. A regrettable conflict has arisen between them.
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The utilization of stump and root wood is analysed in this paper on the basis of literature from middle of 19th century to the present date. According to the information available, the utilization of pine stumps in tar production was small compared to that of peeled Scots pine stemwood in the 19th century. During the 1st and 2nd World War the utilization of stumps for tar production reached its highest levels. Other industrial utilization of stumps has been small up to the present time but now stumps are beginning to be used in the pulp industry.
The greatest amounts of stumps have been utilized by the rural population. Stumps were used as fuel. In the thirties, the yearly amount used was over 200,000 m3 (solid measure), and even in the sixties over 100,00 m3. No industrial utilization method has yet reached these levels.
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The study sought to establish, whether a connection between forest ownership changes and regional differentiation process exists. Data were collected by interviewing fifty persons representing regional planning and forestry. In 1969–72 forest land area owned by the farmers decreased by some 600,000–700,000 hectares. The new owners were non-farmers (400,000–500,000 ha) and the State and forest industry companies (200,000 ha). These figures indicate a possibility for a reduction in the livelihood of rural developing regions in three ways: money incomes with their multiplier effects decrease, possibilities of the rationalization of farming decrease and the population confidence in the future diminishes.
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The ash content has been found to correlate with the fertility of peatlands. Relationship between height of 80-year-old stands and ash content of peat in topmost 30 cm layer was examined in Lithuanian conditions. On drained peatlands with ash content of peat from 3% to 8% pine stands increase in height. Ash content of peat being about 7% Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) stands on drained sites are found to be of equal height. Ash content of peat more than 8–9% has no significant effect on growth of pine or spruce stands. Birch (Betula verrucosa (B. Pendula Roth.) and Betula pubescens Erhrh.), stands are less sensitive to ash content of peat compared with other species. Black alder (Alnus glutinosa L. Gaertn.) stands occurred in sites with ash content of peat more than 8–10%. The height of the stands become equal both in drained and undrained sites in the cases where ash content of peat is about 16–18%. Ash (Fraxinus exelsior L.) stands attain high productivity on drained sites with ash content of peat about 20%.
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In the first place the term short-rotation forestry is being used in the sense of intensive tree growing during a short rotation time using reproduction by coppice shoots from broad-leaved tree material which has been specially bred for this purpose, or of producing fast-growing varieties from planted stock during the course of somewhat longer rotation time (maximum 20 years). However, short-rotation forestry as such has already a long history.
In the Fertile Crescent in ancient Egypt grew no tree species suitable for short-rotation production, but reeds and bulrushes were used for the same purpose as willow-twigs, e.g. wickerwork or binding. At least in the Fertile Crescent reed harvesting using a rotation of one year was practiced already very long ago. The earliest information about coppice-shoot cultivation is found in Greek literature, but it was the Romans who developed short-rotation forestry based on the trees’ capacity of reproducing through coppice shoots into an extensive economic activity. Willows were by far the most important species used. Twigs intended for wickerwork were harvested once a year and thicker material, to be used for support and in basket framework, every fourth year. Chestnut and oak were used for the production of slightly thicker poles employing a longer rotation. Cypress poles were produced from seedlings using a rotation time of 12–13 years. Roman scholars give us plenty of information concerning the tending of plantations in short-rotation forestry.
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During the next decade there will be a marked increase in the allowable cut in drained peatlands. At the same time, the mechanization in logging proceeds, and in short-distance haulage the use of forwarders will increase. This study, based on literature and some observations, deals with logging conditions in drained peatlands with special reference to the suitability of heavy logging machines for use in such terrain. In addition, soil frost and the bearing capacity of the frozen peat soil were studied.
Freezing of the soil in a drained peatland area depends prevailingly on the weather conditions during early winter. The factors influencing soil freezing of a drained peatland are completely different from those regulating the freezing of natural peat soils. The frost penetrates in general deeper in the drained than virgin peatland. The topmost peat layer does not, however, freeze uniformly. Generally speaking, the bearing capacity of a drained peat soil is lower than that of undrained peat due to lower water content.
It is concluded that heavy logging machines are probably not fitted for use in drained areas on peatland even if the average soil frost values recorded would suggest it. Moreover, because of their extremely superficial root systems, peatland forests are exposed to damages by heavy machines in thinning operations.
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Since the year 1966, fourteen specialists, most of them forestry graduates from Kasetsari University in Bangkok, have studied or will start studying in Finland. The visiting graduate students have completed their program successfully, and are interested, as well as the Thai authorities, in continuing the educational cooperation. However, the Finnish Government now seems to have changed the list of countries which are included in this kind of program. The Thai authorities will possibly grant a limited number of scholarships for studies carried out in Finland. The possible need to develop the study program further is discussed if the educational cooperation with Thailand will continue.
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The planning of timber production in a forestry unit is divisible into two phases. In the first phase, planning provides the decision-maker with a number of possible timber production policies; these policies define the production possibility boundary. After the decision-maker has chosen one of these policies, planning moves to the second phase, in which a detailed programme is prepared with a view to meeting the requirements of the timber production policy accepted. The paper indicates one possibility of solving these two tasks simultaneously. In the first phase, the solution of the primal linear programming problem is employed and in the second phase the respective dual or shadow price solution.
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The aim of the study was to assess the use and importance of forestry publications issued by the Finnish Society of Forestry (now the Finnish Society of Forest Science) and the Finnish Forest Research Institute in disseminating research information. Another goal is to obtain information required for planning publication policy. The material was collected by means of two postal inquiries. For the first of these, a sample of 200 subscribers was taken from the mailing lists of the publication series in question. Similarly, for the second inquiry a sample of 100 professional foresters was drawn from the membership registers of the Union of Finnish Foresters and of the Union of Forest Technicians, respectively. The reply percentage of the subscribers was 72 and that of the professional foresters 64. The publication series most actively read proved to be Folia Forestalia, which was also estimated to be of the best quality. Differences between the various publication series in relation to properties studied were not very great.
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It is possible to show that many of the after-effects resulting from the disappearance of forest cover were well known already in ancient times. The invigorating effect of moving around freely in the forest and its artistic creative ability were also recognized as well as the healing effect of coniferous forest on people suffering from consumption. Hunting and the use of forests for cattle grazing is also an extremely old practice. The so-called by-products of the forest such as tree bark and leaves, as well as berries and fruits, have played an important role in the history of mankind from the very earliest beginnings.
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The paper deals with the optimization of roundwood transport in cases where many destinations for it exist and where several means of transport are available. It is also understood that the capacities of the factories to which wood is transported can be used at varying degree. A model was developed for a case such as Finland which sells most of its products abroad.
In the above case, the optimization of roundwood transport does not necessarily mean minimization of transport costs. What is aimed at is to obtain, by using different combinations (mill destinations and the media of transport) the maximum difference between the allowable cut (calculated) and real (actual) transport costs.
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The paper, which was written already at the turn of the year 1950–51, gives a quite detailed description of the early history of the Act on Forest Owners’ Associations, which was passed on 17 November 1950 and is still in force, of the long-lasting and multifarious preparations involved with it, and of its consideration in the parliament. In most parties there were both supporters and opponents; only the social democrats voted harmoniously for the act and the people’s democrats against it.
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The task of the study was to describe the opinions of the forestry experts engaged in the State forestry organization and the organization for promotion of private forestry, and of the appointed representatives in the organization for the promotion of private forestry concerning the official forestry administration and its development. The study material was based on two samples, one of 240 forestry experts and the other of 290 appointed representatives. The data was compiled by mail inquiry.
Forestry experts were found to rate the success of the official forestry administration in its tasks lower than did the appointed representatives. Both the forestry experts and appointed representatives were of the opinion that the official forestry administration has been most successful in accomplishing timber production and least successful in the tasks concerning multiple use of forests. The results also indicate that 44% of the forestry experts were of the opinion that the most suitable organization model would be a uniform state organization for both the State, and private owned forests. About a third of the forestry experts considered that the best model would be two different state organizations, one for the State forests and the other for the private forests. 62% of the appointed representatives were of the opinion that the best solution would be to retain the official forestry administration such as it is now.
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Since the end of 1960s some 350 voluntary forestry cooperation areas covering about 10% of Finland’s total private forest area have been established in the country in order to avoid drawbacks of small individual units. The aim of the study was to find out why most of these cooperative areas have been established in the area of northern Karelia forestry board district in Eastern Finland, whereas elsewhere establishing has advanced very slowly. »Soft» research techniques based on free interviews was used to gather the data. Attitudes of the interest organizations of forest owners and forest industry companies, question of organizer of cooperation, and resources for regional forestry planning were found as most important factors to explain the differences in development of cooperation in different areas.
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The paper describes the systematics, distribution, abundance and nest sites of Formica rufa -group in different Finnish forest types. In addition, it has been estimated the availability of Finnish ants in the biological competition.
F. polyctena, F. aquilonia and F. lugubris are distributed over whole Finland. F. rufa and F. nigricans to Southern Finland only. The relative abundace of ant nests diminish to Northern Finland. F. rufa -group prefer most forest on moist land (Myrtillus and Oxalis-Myrtillus types), mixed forests of Norway spruce (Picea abies (L.) H. Karsts), Scots pine (Pinus sylvestris L.) and birch (Betula sp.), and the silvicultural density 0.6–0.7 (good or satisfactory density), but they avoid broadleaved and pure one-tree species forests. For the biological competition the most competitive ant species seem to be F. polyctena and F. aquilonia.
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The study deals with economic significance of forest landscape planning models used in regional planning in Finland. The »judge»-method is used among professional foresters working on private forestry boards in Southern Finland to define their view of what would be moderate level of costs of landscape management for private forest owners. A sample of 154 forest professionals working in district forestry boards in Southern Finland was sent a sociological questionnaire.
It was possible to form three hierarchical moderation classes by statistical grouping of judgement distributions. Prolongations in rotation ages and restrictions concerning ditching of forested bogs, forest read building and clear-cutting were considered the most immoderate models. Rather or wholly insignificant were evaluated such management models, which mean restrictions in »old fashioned» methods or which are already used in practice.
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The significance of water budget in June and July for forest and peatland vegetation, and consequent effects on fauna, climate and agriculture has been studied.
In June, the difference between evaporation and precipitation is greater than it is later in the summer. North of the line zero difference of evaporation and precipitation, coinciding with a line of sharp change in forest vegetation, the uppermost part of podsol remains wet throughout the summer. During July, the line of zero difference moves from north to south over the greater part of Finland, run-off being minute and podsol at the driest in this month. This line, indicating the length of the period with evaporation greater than precipitation and causing a sharp change in forest vegetation, in frequency of peatlands, amount of growing stock productive capacity of forests etc. This line is significant also for cultivation: because of the lower evaporation north of this line, night temperature below the freezing point often appear in summer.
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Forest research in the U.S.S.R. aims for increased productivity, improvements in timber quality and forest protection, and for better understanding of the environmental impacts of forests. Research institutes are organized under the U.S.S.R. Academy of Sciences, the State Committee of Forestry, the Forestry Committees of the Soviet Republics, or under some other institutions. Direct government subsidies as well as economic support from production enterprises are available as funding for these institutes. International cooperation in forest research, especially among the S.E.V. countries is strongly emphasized. As regards other countries, the well-established program for mutual exchange for forestry information and forest researchers with Finland should be mentioned.
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From the tree breeder’s point of view, an investigation of the chemical compounds in a tree population is worthwhile, if sufficiently high correlations exist between the chemical composition and any economical important characteristics. In Scots pine (Pinus sylvestris L.) populations, such a correlation seems to exist between a high α-pinene and a low Δ3-carene content on the one hand, and the poor resistance to Fomitopsis annosa Fr. (now Heterobasidion annosum (Fr.) Bref.) but a rapid development during the first half of the life cycle on the other hand. Detailed investigation on the terpene contents in pine populations were conducted at 121 locations throughout the Soviet Union. As a result, the range of this species was divided into zones, each of which was characterized by a distinct terpene composition pattern. In continuing selection and breeding work, the terpene contents are being used as indicators when the variation of economically important characteristics of Scots pine populations is studied.
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The study describes the relationships between a method developed by the author for the calculation of the profitability of forest drainage and the old biological method. The calculations were based on empirical data, and they aimed at finding out the effect of a variation in the profitability limit in the areas in hectares to be drained, and on the profitability of drainage. The study deals also with the profitability of present-day drainage activities. The results showed that the profitability coefficient (the ratio between the discounted increase in returns and the costs of drainage) averages 3.04 for the whole country. The corresponding value was 5.68 for Southern Finland, 3.19 for Central Finland and 1.67 for Northern Finland.
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As a subproblem in the joint Nordic Terrain-Machine Project the requirements set by forest road construction on the terrain classifications were studied during the summer 1973 in ten operations, in which either a bulldozer or an excavator method was used.
The most important terrain factors of the ground factors affecting the construction time of the road base were the so-called depth index and the moisture content of the soil, and in addition to these the amount of stumps as a ground roughness factor. These variables explained, however, only a rather minor part of the wide variation in the construction output of the practical operations.
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Photosynthesis and dark respiration in five families of autochtonous Norway spruce (Picea abies (L.) H. Karst.) and in seedlings from twenty Finnish stands of Scots pine (Pinus sylvestris L.) were investigated in constant environmental conditions. Values of CO2 exchange were compared with the height growth and weight of seedlings in Norway spruce and with the weight alone in Scots pine. No statistically significant differences were found in CO2 exchange among progenies or stands. Photosynthetic efficiency and photosynthetic capacity showed a positive correlation both in spruce and in pine. Growth and net photosynthetic capacity were linearly and positively correlated in pine. Spruce and a higher light compensation point than pine. The use of an open IRGA system with several simultaneous measurements and the trap-type cuvette construction in genetic work are discussed.
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The methodological choices of researchers are in general based on some research strategic preferences which originate from the prevailing tradition of the special research field. »Econometric» and »positivistic» approaches commit to the ideals of natural sciences whereas the hermeneutic approach represents the tradition of humanities. The explicit formulation and consideration of the philosophical and methodological commitments of the different research strategies may facilitate the discussion on the applicability of different methods of analysis.
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About one million hectares of forests are fertilized annually in Finland. The goal of the present study was to find out, by means of calculations, how the profitability of forest fertilization varies with variations in the stage of development of tree crops, the quality of the site and its geographical location. Calculations concerned bot fertilization of forests in mineral soil sites and in drained peatlands. The study is a part of a larger project concerning the order of profitability of different forest improvement measures in different conditions. The problems dealt with in this study were approached from the point of view of national economy.
On the basis of two empirical materials it is shown that there is a high correlation between the stand growth percentages before and after the fertilization. Applying the results to existing yield tables the authors calculate benefit/cost ratios showing the stage of development of the stand, the quality of the site and its geographical location. According to the results, fertilization is more profitable in sites of medium fertility than on poor sites. Profitability decreases rather fast from south to north and with decreasing timber prices.
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The paper deals with the methodological problems concerning policy planning and evaluation in small woodlands. A methodological approach to effectiveness of forest policy measures calls, according to the author, for using a frame of reference formed by general economic theory and models of forest owners’ behaviour. Thus, it is important for the selection of forest policy means, and for evaluating the likely effects of a policy, to know the behaviour of the decision makers being influenced. The use of models of forest owners’ behaviour in planning forest policy is motivated by the fact that measures must often affect the woodlot through the owners’ decision making.
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The task of this study was to gather all available information concerning timber-sales behaviour of private forest owners and to try to find the probable trends in this behaviour. The initiative for the study came from the Central Association of Finnish Forest Industries.
In Finland there are areas of timber savings and those of overcutting. These are mainly explained by regional variation in prosperity of forest owners. There are also several individual factors affecting timber sales behaviour. Without major changes in forest policy the annual variation in quantity cut in Finland is increasing and the degree of cutting seem to remain below the allowable cut.
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The aim of the paper was to analyse, using a computer simulation technique, the moving distance of pulpwood bolts when direct felling of trees is used and the bolts are gathered alongside the strip road. According to the results, the average moving distance of bolts depends in a complicated way on the usable part of the stem and the spacing of strip road. As a rule, the differences between moving distances of two-meter bolts weighted and unweighted by bolt volume of various trees is 0–16% when the strip road spacing is 30 m the reason being the fact that the heaviest butt bolts are often more far away from the strip road than the top bolts.
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The study deals with the trampling tolerance of forest vegetation in a Myrtillus type closed forest of Norway spruce (Picea abies (L.) H. Karst.), based on the effects of simulated trampling on the coverage and biomass on the field and between layers of the vegetation. The reliability of the results from the simulated trampling was tested by comparing them with those obtained from real trampling.
According to the results, the trampling tolerance of the bottom layers is greater than that of the field layer. The trampling tolerance of different species varies, so that grasses and dwarf shrubs have a higher tolerance capacity than herbs. Even light trampling of short duration caused noticeable changes in the coverage and biomass of the ground vegetation. Despite certain deficiencies, the simulated trampling gave parallel results of those obtained for real trampling.
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The paper lists the forest publications of forest scientific research published in Finland in 1975 in five scientific series: Acta Forestalia Fennica, Silva Fennica, Communicationes Instituti Forestalis Fenniae, Folia Forestales, and Metsäteho Reports.
This paper deals with the problem of optimal multiple use of forests. The concept of attractive visual environment is analysed following the framework of conditional reflexes and conditionalization of needs. Uniformity of landscape preferences among a group of persons, forest professionals working in district forestry boards in Southern Finland, who have similar education and working environment is studied in empirical part of this paper. The sample of 154 persons were sent a sociological questionnaire.
The preference distribution of forest officers and forest technicians were found very similar. Only poor condition for wood production as a landscape feature was considered clearly negative. The answers show the demand for rational and active working environment as a factor directing the landscape preferences.
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The Society of Forestry in Finland (now The Finnish Society of Forest Science) publishes two series: Acta Forestalia Fennica and Silva Fennica. Outside these publications there are even other publications: the bibliography of Finnish forestry literature until 1933, Bibliographia Universalis Silviculturae, Paris I–II, 1967–70, and Research in Forestry and Wood Science in Finland. This paper is a bibliography of the publications, the issues of Acta Forestalia Fennica in 1913–1972 and Silva Fennica 1926–1972.
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The aim of this study was to estimate the genetic gain of volume growth in Scots pine (Pinus sylvestris L.) selected seed stands. To obtain highest possible accuracy, the estimations are based on a large statistical material comprising 197 separate seed stands. It is concluded that the genetic gain of volume growth ranges between 7.4–15.0%. Unwanted pollen contaminations may, however, in the worst case halve this genetic gain.
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The paper deals with the concepts of time consumption and output in forest work science. When output is defined as the inverse of time consumption and vice versa, it is possible to show the important consequences in probability functions. For instance, it is not the same if the dependent variable in a regression analysis is output or time consumption. Also, the average differ depending on if they are based on the time consumption figures or on the average output.
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The paper lists the forest publications of forest scientific research published in Finland in 1971 in five scientific series: Acta Forestalia Fennica, Silva Fennica, Communicationes Instituti Forestalis Fenniae, Folia Forestales, and Metsäteho Reports.
The paper describes the results of a fertilization experiment, in which transplants of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) were fertilized with various doses of fine-ground copper rock phosphate (33% P2O5, 4% Cu) placed direct in the planting hole. The experiment was made in northeast Finland on a clear-cut, burnt-over and furrowed moraine heath. The fertilization increased especially the survival and condition of the Scots pines and increased to some extent also the height growth of the plants. The spruce survived better than the pines.
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There is no clear picture in Finland of how big the revenues are that the State and the local authorities receive from taxation for the part of primary forestry. Conception of taxation varies from 100% to 50%. The paper presents a comparison between the gross income from timber sales as determined according to the method used at the Central Statistics Bureau and the net revenues as calculated on the basis of forest fee.
At 1920s area taxation was introduced in forest taxation. The system is based on forest types and their timber production capacity. According to the principles of area taxation, no tax is paid for overcuts, whereas timber capital savings should be paid for.
According to the calculations of this study, in 1958–62 the gross income from timber sales was about 506 million Fmk annually in Southern Finland, the costs involved in timber production about 437 million Fmk, and the annual taxable income 231 million Fmk. In the period more valuable timber assortments were harvested than those for which taxes were paid according to the old regulations.
Half a century ago, area taxation was a system suited to its purpose. Now, however, forestry is in the hands of another generation, and accounting has been introduced in practical agriculture and forestry. Therefore, a taxation system based on the real income from timber growing should be introduced. The transition period could even be relatively short. It seems probable that a forest owner does not sell timber at a time when this would be required by silvicultural aspects in order to avoid income taxation, he should have to be present an acceptable working plan.
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Among the users of factor analysis there seems to be a tendency to extend the use of this method to tasks where it suits poorly. It is therefore important to emphasise at least the following aspects: 1) More critical attention should be paid to problems of interpretation especially at situations where method is aimed at analysing the causal relationships among the variables; 2) The study problem should be stated so clearly as to make it plausible to evaluate the suitability of factor model to the problem.
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A hypothetic problem is outlined as an example of the type of problem to which factor analysis should not be applied. Apart from this, attention is paid to industrialisation, a concept characterised by several variables, none of which can be held constant while analysing its influence on attitudes by multi-variable cross-tabulation techniques.
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Some alternative ways of using factor analysis in the field of forest owners’ behaviour are explored in the article, in the light of two new Finnish publications. The philosophical and mathematical propertied of factor analysis are often considered too restrictive, and thus its applicability to different fields too limited. A good knowledge of the method and the subject matter theories seems to be an important prerequisite for a successful application of factor analysis. Otherwise the researcher is too dependent on the general recommendations concerning the use of factor analysis and cannot fit its use in his special situation and the whole methodological setting of the study.
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Scots pine (Pinus sylvestris L.) seedlings were stored for five days in an ordinary wood shed. One half of the seedlings were planted out directly, and another half after soaking the roots of the seedlings for 3–6 hours in water to compensate the possible water deficit developed. According to the results of the experiment, the effect of watering was extremely small. The difference observed, which was in favour of the trees that had been watered during storage, was discernible only in the needle length and in the number of lateral buds; in mortality or in the growth of the seedlings no difference could be observed.
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The Finnish forest industries have doubled their use of wood raw material during the past two decades. The average annual overcut of 4.0 million m3 in 1960–64 has been turned into an average annual surplus of 2.7 million m3 in 1965–69. By 1974 industry’s requirements for domestic roundwood would increase by about 6.3 million m3, if all new capacity can be taken into full production. The MERA allowable cut, if realized, would leave a 1.5 million m3 annual surplus in the forest balance in 1974. Less intensive forestry programs would mean a 1.5 to 4.4 million m3 overcut in 1974.
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The mobility of logging tractors was tested in the winter 1969 on difficult snow conditions to gather information for planning of logging operations and for logging machinery design. The tractors tested were Clark Ranger 666, Timberjack C, Valmet Terra, Ford Brunett 5000, Fiskars 510, BM-Volvo SM 660, BM Volvo SM 661, Ford Country 6, MF-Robur I and BM-Boxer T-350.
According to the results, there is a preference of tracked vehicles in difficult snow conditions compared to wheeled tractors. Ford Country with long and bearing full-tracks proved to have the best mobility. On downhill grades it was found significant differences between three-quarter-track-tractors and skidders, although the performance on level ground and uphill grades was relatively similar. The tracked vehicles can easier move on the packed snow layer and reach a higher speed.
The driving speed does not increase significantly until the density of snow has entirely changed through getting wet. Wet top layer of snow affects positively on driving, because it increases packing of the snow. Increasing density of the snow improves especially the mobility of broad-tired wheeled tractors. To be able to predict the driving speed of a tractor in winter working conditions one must know the depth of the snow layer and the density of the snow and the grade of the slope. In addition, the passages on the same route and the packing of the snow must be regarded.
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The paper lists the forest publications of forest scientific research published in Finland in 1970 in five scientific series: Acta Forestalia Fennica, Silva Fennica, Communicationes Instituti Forestalis Fenniae, Folia Forestales, and Metsäteho Reports.
A review is made into the experiences and possibilities of willow breeding, with a particular consideration of their application under Finnish conditions.
In comparison with other tree genera, Salix has many advantages in breeding. The great number of species, large genetic variation between and within species and frequent crossability offer good possibilities for improvement by hybridization. The dioecious flowering, plentiful seed production and short generation cycle are valuable properties for breeding by controlled pollination. Individuals with desirable characteristics can be easily propagated vegetatively from cuttings. The propertied stated above are also characteristic of poplars, the breeding of which has resulted in great success. Corresponding results can be therefore expected from willow breeding, which has recently been initiated in several countries.
Today willows have no practical significance for forestry in Finland. There are, however, some suitable Salix species, both indigenous and exotic, for starting material for breeding, and plenty of favourable sites for willows. Therefore, the beginning of breeding research with willows should be well justified also in Finland.
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This paper reports spot sowing experiments of Scots pine (Pinus sylvestris L.). The seeds were either covered with coarse sand, tramped in the substrate or sowed without any covering, 30 seeds in each treatment in 70 replications. The site was of Vaccinium type with sandy soil. The germination percentage was 81 and 91 on the respective years. The development of seedlings was observed for 3–4 years.
The results indicate that both tramping and covering the seeds to some extent increased the number of seedlings and improved the early development. The highest numbers of seedlings were recorded in the first growing season, after which there was 23 seedlings/100 seeds in the uncovered spots, 27 seedlings in the covered spots and 31 seedlings in the tramped spots in the experiment sowed in 1965.
Mortality of the seedlings was highest between the first and second growing season, and empty spots increased with the time. There was no difference in mortality between the sowing methods, but the number of seedlings after first growing season affected the result. Under favourable conditions four seedlings per spot seemed enough to secure the survival of minimum one seedling per spot during the three first growing seasons. In poor conditions seven seedlings was needed.
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Seed development was microscopically studied after controlled pollinations. In all the interspecific crosses incompatibility occured. In the following crosses the growth of all the pollen tubes stopped before they had penetrated through the nuclear cap: Picea abies (L.) Karst. x mariana, abies x jezoensis (and the reciprocal), abies x omorika (and the reciprocal), mariana x asperata, mariana x jezoensis and Picea abies x Pinus sylvestris L.
Some of the eggs were fertilized in the crosses Picea abies x glauca (and the reciprocal) abies x asperata, abies x koyamai, abies x obovata, mariana x omorika and jezoensis x omorika. Embryo degeneration was observed in all these crosses. All the embryos died in the crosses abies x glauca (and the reciprocal) as well as jezoensis x omorika. Adequate amounts of full seed for germination test was obtained from the crosses abies x asperata, abies x koyamai and abies x obovata. In all these crosses there were seeds which were able to germinate and the hybrids are now one growth season old.
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The study attempts to establish to what extent the present regional allocation of the forest improvement subsidies equalize the profitability of forest drainage in Finland. The benefit/cost ratio has been used to describe the regional variation of the profitability
The study revealed that the forest improvement subsidies granted in 1968, even the highest possible subsidies, did not equalize the profitability of forest drainage. According to the results, the northern regions are at a disadvantage compared to the southern parts of the country. To fully equalize the profitability of forest drainage the average subsidies granted in 1968 should have been raised in the second financing zone from 22 to 32%, in the third zone from 32 to 60%, and in the fourth, northernmost zone from 43 to 86%. The study also suggests that the boundary lines of the financing zones should run, at least in Central and Northern Finland, from southeast to northwest instead from east to west, as it is now.
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The purpose of forestry has hitherto been seen mainly as economic conservation, i.e. the use and management of timber resources on a sustainable yield basis. Along with the rising standard of living, however, amenity values of the environment will become more appreciated, which means that forestry and forest industries will be concerned with conservation of immaterial resources of nature as well. Since inland lakes cover some 10% of the surface area of Finland, and forests occupy more than 70% of the land area, forests and lakes are essential constituents of the Finnish environment during both work and leisure.
The main task of the pulp and paper industry in conservation is the control of water pollution. Today some 10% of Finnish lakes are polluted. Pulp and paper industries contribute 75% of the total waste water load of the Finnish lakes. Increasing water pollution can be prevented by improved processing technology, waste water treatment, and economic use of industrial wastes. Thus, the waste water load of the lakes has not increased in the last 10 years, despite doubling of pulp and paper production. According to the prognoses, by the year 2000 the waste water load from pulp and paper industries will be reduced to one half or one fourth of the present level although the capacity will still be increasing.
In forest management more emphasis should be paid on the aesthetic and recreational values of forests. Along with increasing leisure the need for recreational areas is growing. Scenic and recreational aspects must be considered in the management of industrial forests, too. With wise management, high timber yield is compatible with the maintenance of an enjoyable environment. Good silviculture takes account of timber production, wildlife management and landscape architecture simultaneously. National forestry development programs must be based on the principle of the multiple use of forests.
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Field experiments of Scots pine (Pinus sylvestris L.) was established by planting seedlings grown from seeds collected from open-pollinated plus trees throughout the country. The 36 progenies represented were planted in 4 blocks as 2+2 transplants in 1960. The main characteristics of the seedlings were measured in 1966 and 1968. Considerable damage had been caused to the stands by moose (Alces alces) and Melampsora pinitorqua Rostr., consequently, therefore, only normally developed seedlings were measured.
Highly significant differences between progenies were found in the number of branches in 1968 and in the ratio of height of tree to the length of the longest branch. In 1968, the differences in height between progenies were not significant, but there were significant differences between blocks both in tree height and length of terminal shoot. Obviously, the edaphic heterogeneity of the site has influenced mainly the juvenile growth of the plants, because in the length of the terminal shoot there could be seen also significant differences between the progenies. There were no significant differences between the progenies in the length of the longest branch, in the angles of the thickest branches, in stem taper and in the diameter of the thickest branch.
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Clone stands of bracken fern (Pteridium aquilinum (L.) Kuhn.) wood small reed (Calamagrostis epigeios L.) and lily-of-the-valley (Convallaria majalis L.) are often partly split into two by the road, but often encountered also unilaterally on the roadside in the shape of a semicircle. The unilateral stands can be at times 20–30 m wide and they are sometimes solitary stands of the species. A method to define the age of the solitary stands of six plant species including bracken, wood small reed and lily-of-the-valley was developed in a series of earlier studies.
These stands can be used to define the time the road was built. Clones that are bound by the road unilaterally are younger than the road. If there are several unilateral clones and they are of different sizes, the road is older than the largest clone. When the road is skirted bilaterally only by clones divided by the road, it is younger than the smallest clone. When there are by the road side both unilaterally delimited clones and clones split by the road, the age of the road comes in the range of time determined by the age difference between the largest unilateral and smallest bilateral clone.
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The most effective work organization will be used as a goal in minimizing of logging costs. Some type of problem approach is usually utilized. The concept of the ideal system offers a possibility to get guidance in this difficult task. The idea of an ideal system is based on the fact that an ideal system, even imagined, can be utilized for any purpose. There are checklists in handbooks to accomplish the four existing steps: define of function, design ideal, develop optimum and deliver results.
In this paper two special cases are taken up to illustrate the concept itself, and it’s use in design of forestry work organizations. There were found no such reasons which could limit or even prevent the use of this method for forest technological purposes. That is why the author believes the method to give better results than any other customary approach.
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The purpose of this study was to explain whether it is possible to affect, in practical working site conditions, by means of logging waste on the strip road, the depth of the track which is formed in terrain transportation and the injuries of the growing stand. Five 20 m long investigation areas with logging waste and five similar areas without logging waste were arranged on one strip road at Teisko logging site in Southern Finland. The logging waste layer was mainly Norway spruce and 10–15 cm thick. A KL–836 B forwarder was used. The type of soil was loam.
The logging waste affected the depth of the track only by decreasing the wear of humus layer. Even decreasing effect of logging waste on the injuries in the growing stand was minor. At Kitee working site in Eastern Finland strip roads were studied. The type of soil was thick, rather mouldered peat. The thickness of logging waste was 3–4 times greater than in Teisko, mainly spruce. A Volvo Nalle SM 460 forwarder was used. The effect of the logging waste on the depth of the tracks was clearly to be noticed. On basis of the appearance of the tracks one could assume that the difference was due to different wear of the humus, and not so much due to the quantity of logging waste that improves the carrying capacity of terrain.
In some extent logging waste was also found to affect the amount and quality of tree injuries. In practical working conditions, the importance might be small, since in the experiments an unrealistically great amount of logging waste was used.
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This investigation studies the effect of the retail price and the technical properties of preference ordering of buyers of power saw. According to the model derived, the preference ordering of power saws is due to technical properties xj. If no such restrictions in the function are supposed that could have bearing on the preferences of the buyers, there may be N ! possible combinations, when there are N power saws. If one can presume that each price corresponds with a technical level it is possible that each buyer has an optimum price of his own. The bigger the difference between the optimum and actual price, the less preferred the actual power saw is. In this case one may notice the amount of possible orderings is much less than that based on the model. Thus, the mode may be used.
In this paper some models are presented for cases when only n pieces of the population of N power saws are studied. 16 power saws of differing ages and technical levels were investigated. It was noted that many criteria of technical goodness were positively intercorrelated. The price correlated positively with every criterium used. According to the profile analysis, it was concluded that there were many development lines. For example, the idea of a light and the idea of an effective power saw.
According to the principal component analysis, it seemed obvious that there was little room for one- or two-dimensional preference ordering by the technical properties and price.
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An attempt was made to estimate critically the genetic gain in clonal seed orchards of Scots pine (Pinus sylvestris L.) in Finland. The selection differential of Scots pine and Norway spruce (Picea abies (L.) H. Karst.) is calculated on the basis of filed information on selected plus trees which has been kept by the genetic register at the Finnish Forest Research Institute. The differentials were computed as realized differences in height between plus-trees and normal stand characteristics on respectively site class and as a function of age.
The genetic gain in height growth of Pinus sylvestris was computed on the basis of information on selection differential and heritability. This genetic gain is between 2.6–4.4% provided there is no pollen contamination from unknown sources outside the seed orchard. The genetic gain of volume growth in Scots pine is about 7–15%, provided there is no pollen contamination in the seed orchard. However, according to investigations, there is invariably some pollen contamination in this kind of seed orchards. The contamination decreases to about 30–50% as the orchard matures and starts to produce endemic pollen. If the pollination would be entirely due to foreign pollen sources, the mathematically calculated genetic gain would be 3.5–7.5%.
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The Finnish advisory organizations of private forestry provide education for forest owners on the problems concerning farm forestry. It is important that the methods in use would be able to prepare for the future development so that the teaching could lead to the most efficient learning. The present study was a survey research directed to all private forest rangers working in the District Forestry Boards in Finnish-speaking areas of the country. The inquiry was answered by 756 rangers, the returning rate being about 80%.
The results indicate that farm-forest owners have to be further educated. The education should be directed in the first place to method of artificial regeneration, cleaning-thinning, cutting operations and to the methods of physical work achievements. Particularly, it would be important to take care of teaching concerning cost calculation and economic planning. On the other hand, the enquiry indicated that, according to the opinions of the forest rangers, such skills belong most for the forest professionals and not for the farmers. According to the results, there is a need for development in the education given to farm-forest owners, as well as education of professional foresters.
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The paper lists the forest publications of forest scientific research published in Finland in 1969 in four scientific series: Acta Forestalia Fennica, Silva Fennica, Communicationes Instituti Forestalis Fenniae, Folia Forestales, and Metsäteho Reports.
The aim of the study was to investigate the effect of four packing methods on the field survival and growth of seedlings and transplants of Scots pine (Pinus sylvestris L.) stored over the winter in a cold-storage cellar. The following sorts of plants were used: one-year-old seedlings (1+0) grown in a plastic greenhouse, two-year-old (2+0) open grown seedlings and three-year-old open grown transplants. These plants were stored in open wooden boxes, in sealed plastic bags, in boxes with wet peat on the bottom and in plastic-laminated paper bags.
The control plants were of the same types and were kept in a nursery over the winter. The storage was carried out in a mantle-chilled cold-storage from October 1966 to May 1967. The temperature in the cold-storage was kept around -2 °C and the relative humidity of the air over 90%. The water content of a randomly selected sample plants showed no increase in water deficit after the storing. Part of the seedlings were transplanted in the nursery and the rest were planted in a clear-cut area. A number of the latter plants were treated with an insecticide (1% Intaktol, which contains DDT, Lindane and dieldrin) before planting. All the experiments were examined after one growing season and the planting experiments the next fall.
The transplants (2+1) in the nursery, and in the forest had survived and grown better than the seedlings. In the nursery the 1+0 seedlings survived and grew better than the 2+0 seedlings. There was no difference in mortality between the seedlings. After the first growing season occasional significant differences between the packing methods were observed, but they disappeared during the second growing season. Thus, all packing methods proved to be as successful as the control method without winter storage.
Transplants were more often attacked by the large pine weevil (Hylobius abietis L.) than the smaller seedlings. The damage, however, was considerably greater on the seedlings because of their lower resistance. No significant differences in the Hylobius-attack between the packing methods could be observed. The Intaktol-treated plants were as often attacked as the untreated ones, but the damage was slighter on the treated ones.
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The aim of the present study was to establish, by means of planting experiments, the influence of different packing, heeling-in and watering as well as the length of the storage period on the development of Scots pine (Pinus sylvestris L.) seedlings, in all 2,090 seedlings, that had been lifted from the nursery bed in spring. The plants were packed in bundles and into plastic sacks in 1965 (6 storage methods) and in 1966 (3 storage methods). Control seedlings were planted without storing at the time when storage of the test material begun. The plantations were followed 3–4 years.
Storage for two weeks in the different ways and planting without storage gave similar results when seedling survival was compared. Storage in plastic sack proved to be as good as storage in bundles in a cellar, and healing-in in moist soil or in a drain were both usable methods. Watering the seedlings did not improve the results, which indicates that the storage caused no serious lack of water.
After four growing seasons an average of 19,6% of the seedlings of the 1965 experiment died, the bulk of them by the end of the first growing season. Despite control treatment, Hylobious abietis caused serious damages. In the plantations of the year 1966 mortality of the seedlings was under 5% by the end of third growing season. During the first two growing seasons after planting differences in growth of the seedlings stored in different ways could be observed in the plantations of the year 1965, but the differences levelled out later. In the plantations established in 1966 no differences in growth occurred.
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The share of occupational instruction at the Forest Machine School varies between 70 and 80%. The paper describes organization of the education, curriculum, teaching methods, practical training, machinery, and learning experience of the students. It discusses the influence of teaching programme, and school environment on attitudes and motivation of the students.
The school employs an adaptation of the TW I method in its actual methods of occupational instruction. The method of demonstration is also employed. The size of a training group has been restricted to 10 pupils, and the school has attempted to acquire plenty of instruction components, material for repair, and practice worksites. In this way the repetition of essentials can be guaranteed. The minimum factor in driver training is the competence to use a grab loader. In the training of mechanics the core competence is the diagnostics of defects and the making of adjustments.
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As Finland has neither coal nor oil resources, it has had to resort to large-scale imports dependant on foreign relations and especially maritime connections. When the outbreak of World War II broke these connections, the state had to institute comprehensive controls and measures to ensure the supply of fuels. The present article deals with the measures taken by the authorities at that time.
Although the danger to Finland of interruption in fuel imports had been pointed out, the Finns had made hardly any preparations to manage on their own. In autumn 1939 there was no reserve stocks and particularly vulnerable was the question of motor fuels and lubricants.
When the Winter War ended in spring 1940, it was realised that special measures were needed. A law was enacted that concerned both the revival of production and regulation of consumption. For instance, every forest owner was notified of his share of the fuelwood logging. The wood processing industry had been accustomed to maintain stocks of wood covering two years’ requirements, but these inventories, too, were depleted by 1944. The law for safeguarding the supply of timber, enacted in early 1945, invested far-reaching powers in the authorities, and the logging plans were exceptionally large in 1945-47. Controls governing forestry and the forest industry were discontinued in 1947.
In Finland it is necessary to maintain a state of preparedness. This applies above all to fossil fuels and particularly oils.
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The purpose of this study was to answer questions concerning the basic information in planning of timber harvesting, how this information has to be handled, and how the planning of logging has to be combined with other forest management planning.
A deductive research method was used. By analysing a logging plan, prepared for a certain forest area, general conclusions were reached. To prepare the logging plan in connection with the forest management plan, the following information was found to be necessary: boundaries of the area, extent and ownership of the planned area, maps including information of the location of the timber and the conditions for transportation, road network and a reliable picture of the difficulty of the forest terrain.
Based on the material of the present timber harvesting methods it will be possible to predict the logging methods which will be applicable in the near future. The object to be planned has to be divided to operation areas. The amount of manpower and equipment needed can be estimated for each phase of the timber harvesting chain on the basis of the information calculated in this manner. Investments to machines and basic improvement works have to be planned before the effect of planning can be calculated in the logging costs, which are to be minimized. Due to the rapid development of the field, the handling of the material in connection with a forest management plan has to be left partly unfinished since the development of future logging methods cannot be reliably predicted.
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The purpose of this study was to find out about the forest owner’s views on silviculture and any forest management work he had carried out. The data is based on interviews of 289 forest owners in municipalities of Jämsä and Karstula in Central Finland in 1966. The forest owners were a random sample of all males in the municipalities, who alone or together with their wives were in the possession of at least 2 ha of cultivated land and 10 ha of forests.
The forest owners’ attitudes towards silviculture were generally favourable. A common opinion was that money spent on silviculture is a paying proposition (88%), that forest management is better today than it used to be (87%), that cultivation of forests is an economic proposition (81%), and that few owners manage their forests properly unless forced by the law (79%). The need for planning silvicultural measures was also generally accepted (78%).
However, few agreed that the legally imposed silvicultural fee is necessary, that the new silvicultural methods were practicable, or that money he invested in silviculture is profitable to the forest owner. Only 45% agreed that forestry experts have sufficient understanding of the owner’s needs. One third of the forest owners had carried out the following silvicultural tasks: forest cultivation, forest drainage or forest fertilization, on a minimum area of five hectares. Forest cultivation had been carried out by 63%, forest drainage by 44% and forest fertilization by 16% of the respondents. Vast majority (90%) had employed forest experts and a many nearly every year, mainly for marking the trees to be felled.
In the more rural municipality of Karstula, the forest owners’ views towards forestry was more favourable than in the semi-industrialized Jämsä.
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This article describes the 60th anniversary of the Society of Forestry in Finland (now the Finnish Society of Forest Science). The reception addresses, donations and paying of homages to its members are listed. Also, some of the speeches are published.
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Nordiska skogsarbetsstudiernas råd (NSR, Council for Inter-Scandinavian Research in Forest Work Science) is the most developed organization in this field. It has only research institute members. The council started in 1953 and has since then had meetings and working groups. Among the latter, an Inter-Scandinavian and British wood nomenclature was created. In 1969 the organization will start a number of joint investigations, two of them in Finland, concerning utilization of waste wood and transport difficulties in forest terrain. Sweden will study branching, Norway relations between men and machines and Denmark broadleaved tree cutting and hauling.
Economists have since 1958 had an Inter-Scandinavian Seminar for Forest Economists (Nordiskt skogsekonomiskt Seminar, NSS), which has only personal members. Also, Inter-Scandinavian forest congresses have been held every fourth year since 1923, in which also research results have been presented.
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This paper gives an overview on international organizations involved with forestry and forest research. International Union of Forest Research Organizations (IUFFRO) was named in a congress in Stockholm in 1929, but the organization has its roots in a German association of forest experiment stations founded in 1872. IUFRO is a non-governmental organization with research institutes as members. As it has no permanent centre, and no own research institutes, its opportunities for carrying out actual research work are limited. A reorganization is being planned.
Food and Agriculture Organization (FAO) of the United Nations (UN), established in 1945, has a division for forestry and forest industries. FAO is a governmental organization for international policy in agriculture, fisheries, nutrition, and forestry, and not meant for research work. It has nevertheless been compelled to carry out a great deal of research work, particularly in projects that have proved impossible for other organs. The Timber Trend Studies are the best known in the field of forestry.
World Forestry Congresses are occasions where all kinds of forestry problems can be discussed, and they have also stimulated research work. The first International Forestry Congress was held in 1926 in Rome, but several other international forestry congresses have been arranged since 1873.
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In addition to the research carried out by the Faculty of Agriculture and Forestry of the University of Helsinki, the Forest Research Institute, and the State Committee for Agriculture and Forestry, applied forest research is performed in Finland by the Forest department of the Work Efficiency Association, Metsäteho, the Forest Work Study Section of the Central Association of Finnish Woodworking Industries, the Logging Technical Office of the State Board of Forestry (today the Development Section of the Organization Bureau), and Uittoteho, research body for floating questions in Northern Finland.
These establishments are concerned chiefly with the development of and experimentation with working methods, tools and machines in wood harvesting and with the analysis of wage and payment bases for timber preparation and haulage jobs.
An endeavour has been made to coordinate the forest technological research in these institutes and the University of Helsinki and the Forest Research Institute. Each institute is presented in a cooperation organ formed by the Society of Forestry in Finland. This organ also functions as the Finnish section of Nordiska Skogsarbetsstudiernas Råd (NSR). These bodies agree about the division of the research tasks and discuss the research programmes jointly.
In addition, some foundations give notable support to forest research, in particular the Foundation for Forest Tree Breeding, Foundation for Research of Natural Resources in Finland, and SITRA, the Fund for the Jubilee Year 1967 of Finland’s Independence.
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The special act passed in 1961 provides for the tasks of the State Commission of Agriculture and Forestry. The Commission finances and supervises the activities of the research workers employed by the Commission. In addition, it gives special grants for specific purposes and endeavours to promote progress in research in accordance with the above-mentioned act.
Despite the formal requirement for progress, the real value of the grants given to forest research does not exhibit a rising trend. There seems to be a need for increasing funds both for research and publishing purposes.
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The paper discusses the cooperation between the research workers of the Forestry Departments, University of Helsinki, and of the Finnish Forest Research Institute. Although the fusion of these institutes might even seem to be justified in order to guarantee a coordination of the research work, no drawbacks exist in the present organization which could not be removed with cooperation.
In fact, cooperation has hitherto taken place in many forms both in teaching and research: working groups in the various branches of research have recently prepared a program for the development of research (Silva Fennica 1:4; 1967), leading scientists of the Institute act as lecturers at the University and some university teachers as associate researchers at the Institute.
On the other hand, in some cases lack of cooperation may have led to uncertainty and inconvenience of practical forestry. Therefore, a better system of information between scientists should be created and the continuity of cooperation strengthened. In conferences between the university and institute people, development work within the various fields of research should be cleared up with a long-range aim. The conference day of the scientists in the beginning of each year is mentioned as one possibility to start the cooperation.
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Foundation of the Finnish Forest Research Institute in 1917 was one step in the plans of A.K. Cajander to organize Finnish forestry research. Already earlier the highest forestry education had been incorporated into the University of Helsinki (1908) and the Finnish Society of Forestry founded (1909). In conformity with statute of 1962, the task of the Forest Research Institute is “to perform studies and experiments in order to develop Finnish forestry in a manner adapted to the purpose”. Consequently, the task of the institute is to carry out studies explicitly serving practical forestry.
The article describes the actual and required development of the Forest Research Institute. Concerning the most recent steps of development, for instance, four new professorships has been created: Forest Zoology, Tree Breeding, Forest Yield Science and Mathematics. In addition, a few regional research and experimental stations were established.
Strengthening the Forest Research Institute, i.e. increasing its staff of research workers and its funds, must still be continued to make it possible for the Institute to satisfy the great demand for research work of present-day practical forestry. The article also gives attention to the internal scientific development of the institute. Particularly, there is reason to stimulate the extended studies of young research workers as well as international exchange.
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The Society of Forestry in Finland (now the Finnish Society of Forest Sciences) was founded in 1909. A comprehensive history of the society has been published earlier (Acta Forestalia Fennica 40) which covers the first 50 years of is activity. The tasks of the Society are to work for the development of forestry research in Finland and to be a link between research workers in the field of forestry.
This article summarises the activity with regards of the meetings during the 60th year of the Society, and the two scientific series, Acta Forestalia Fennica and Silva Fennica, it publishes. The characteristics of the development of the publishing activity has been its’ becoming livelier and a shortening of the studies published. In 1960s funds have been granted for the execution of even larger projects. The Society has also treated many questions within the field of policy of science.
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The article gives an account of the organization of research work, which was started in the 18th century at the Academy of Turku. It was later developed in the times of the Forest Institute at Evo, founded in 1862, but it was not until the highest forestry education was transferred to the University of Helsinki in 1908 that it got a more compact form. In 1909 the Finnish Society of Forestry was founded and in 1918, the Finnish Forest Research Institute. In addition, a number of special institutes and organizations have been established.
At first the number of different branches was small, but the number of fields has multiplied until the present day. The article describes development that has taken place within the fields of forest biology, silviculture, forest protection, soil science, peatland forestry, forest mensuration, forest management, forest technology, forest economics, and multiple-use forestry.
Development was promoted by the organization of research work and its division into branches. Improvement of vehicles used in collection of study material as well as of the equipment used for this purpose and for handling the material have been important for the development. Funds for research have increased. Contacts with other fields of science and participation in international research work, especially through IUFRO, team work and schooling new scientists, have been influential. In 1960 a State committee appointed for further development of forestry research presented a plan to this end.
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The paper lists the articles of forest scientific research published in Finland in 1968 in the following scientific series: Acta Forestalia Fennica, Silva Fennica, Communicationes Instituti Forestalis Fenniae, Folia Forestales, and Metsäteho Reports, included are also recensions on forest literature.
The concept of the internal rate can be defined as the rate of interest, which if applied to expenditures incurred at different times, gives a compounded sum equal to revenues compounded at the same rate for the same time. This concept has long been used in forestry, particularly concerning the development of a stand, because in this case there is a time difference between many items of expenditure and revenue. Several terms have been used or the notions derived on this basis. The term internal rate of return has begun to appear only recently. This article explains different variations of the concept and its different names, together with some related concepts and terms.
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The article is a lectio praecursoria held on May 18, 1968 at the University of Helsinki. It deals with some aspects connected with the adaptation of mathematic-statistical methods and in particular with multivariate methods. Among these regression, factor, and principal-component analysis are mostly used by the Finnish forest economists.
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18 permanent sample subplots of the Swedish and the Hassian Forestry Institute, each measured in equal intervals for several decades, were divided into subplots of different size. An analysis of variance was calculated for every set of subplot size. The development of intraclass-correlations over years and over different sizes of subplots could be explained if three different correlations were assumed: soil-correlation, correlations from irregular distribution of the trees, and correlation resulting from competition. Intraclass-correlations were positive or negative depending on dominance of one or two of these correlations.
An explanatory simultation study of competitional variance showed the effect of the degree of competitional correlations on the variance of means of subplots of different sizes. If this coefficient was small, all variances of subplots means within the range investigated became larger than expected in experiments without competition, with larger coefficients the variances of means of the smaller subplots became smaller, those of larger subplots larger than expected.
Plots of medium or large size are probably optimal for long term experiments with forest trees, if all sources of costs in such experiments are taken into account.
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The aim of the present study was to describe the diffusion of the professional insight in forestry taking place among forest owners and as factors attached thereto. The material is based on interviews of 289 forest owners in municipalities of Jämsä and Karstula in Central Finland in 1966. The forest owners were a random sample of all males in the municipalities, who were in the possession of at least 2 ha of cultivated land and 10 ha of forest.
Mass media (papers, radio and television) was an important source of information for the forest owners. Forest educational events are specially planned to spread information on forestry to forest owners, but 40% told that they had never participated any such event. Only 8% had got professional forest education. Knowledge concerning forests and forest management may also be inherited from the forest owner’s parents, or in discussions with professional forest officers or neighbours. About 73% of the forest owners had been in touch with professional foresters at least once during the last three years.
A third of the forest owners regarded professional insight their most important source of information on forestry, a little smaller group considered instruction in forestry questions the most important source. The third largest group had achieved their knowledge on forestry on own experience and inherited knowledge. Forest owners favouring mass media, own experience and inherited knowledge were often owners of a small forest holding.
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The technical term reduced yield stands – sometimes reduced yield soils – is widely used in the Finnish forest literature. However, there is no clear definition of the notion reduced yield and no explanation of how this notion is measured in the classifications. Some committee reports and bill proposals and some laws and statutes use the reduced yield forest soil. No definition can be found. In my opinion the term reduced yield forest soils ought to be completely abolished until forest soil experts can perhaps define what it means, if they consider such a concept useful.
Explanations for the term reduced yield stands can be found in the descriptions of classification systems of stands. According to them, the criterion is partly silvicultural (site, species of tree), partly mensurational (volume, sometimes growth), partly economic. No explanation is found as to how the economic aspect is measured, nor about the limit of a full yield and reduced yield.
In my opinion such a term is confusing. I therefore suggest that the term reduced yield stand ought to be abolished. If something is needed instead, I suggest the term understocked stand, defined as a growing stock under certain percentage of a fully stocked stand. The notion of economic reduced yield cannot be generally tied to certain silvicultural and mensurational characteristics of stands. The economic aspect of certain kinds of stands may differ, depending on the owner of the forest and his economic situation, the location of the forest, the composition of the whole forest ownership unit, etc.
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The present paper is a preliminary report of a project designed to determine the order of profitability of various forest improvement measures – seeding and planting, drainage, and fertilization – in various types of stands and in different parts of the country on drained peatlands. Sample plot data on the effect of draining on increment was derived from areas drained 28– 36 years ago. The study was carried out in the southern half of Finland.
The observations on increment changes are based on two measurements of the sample stands 12 years apart. Supplementary calculations indicate that the stands on drained peatland, depending on site quality and tree species, have either continued to grow like mineral-soil sites of similar fertility or have somewhat increased their growth rate.
The effect of draining intensity was studied using strip measurements. It was found that both the total amount of wood produced (current stand + cutting removal + natural removal) and the current annual volume increment for the 5-year period systematically decrease as the ditch interval increases. The decrease is, however, relatively slight. In Eriophorum vaginatum pine swamps, the total amount of wood produced and the increment show a decrease of ca. 20% with an increase in ditch interval from 20 to 60 metres. In other sites, the decrease is ca. 5-10%
It can be concluded that if the increase in ditch interval do not result in considerably poorer timber assortment distributions than indicates by stand production and increment, it is profitable to pan for a relatively large ditch interval and a slightly smaller than maximum wood production. Supplementary data and check calculations may cause some changes in these preliminary results.
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The time interval between final felling and plantation means a waste of time and thus a production loss, and may lead to lush growth of ground cover and hardwood sprouts, which increases expenses in forest management. The objective of this study was to determine the length of time between final felling and artificial regeneration in private forests in the forest districts of Uusimaa-Häme in Southern Finland and Pohjois-Häme in Central Finland. The material consists of a sample of 150 plans of the 952 cutting and regeneration plans in the district of Uusimaa-Häme and a sample of 140 plans of the 1,102 plans in Pohjois-Häme.
The time lag between final cutting and seeding or planting was on average 1.4 years in Pohjois-Häme district and 0.7 years in Uusimaa-Häme. In the latter district, 56% of the logged area was regenerated in the spring immediately following the cutting, and 84% not later than in the second spring. In Pohjois-Häme, 29% of the harvested area was regenerated immediately in the first spring following cutting, and 79% not later than in the third spring following cutting.
In Pohjois-Häme, the interval was shortest in the smallest forest holdings, and longest in the largest holdings with the largest regeneration areas. The length seems to depend mainly on the size of the regeneration area. In Uusimaa-Häme district, the interval was shortest in the smallest holdings, rather short in the largest, and longest in the intermediate-size forest properties. Seeding with Scots pine (Pinus sylvestris L.) was used in almost all regeneration areas.
The forest owners had mainly carried out the regeneration work themselves. In the Pohjois-Häme area, the interval was shorter when the district forestry board regenerated the area. 35% of the regenerated areas had required supplementary planting in Pohjois-Häme, and 47% in the Uusimaa-Häme area. Supplementary planting was more common in areas regenerated later after the cutting. In Pohjois-Häme, according to the reports of the forest owners, 75% of the regenerated areas required tending during the first three years, in Uusimaa-Häme, 80%.
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The paper lists the papers of forest scientific research published in Finland in 1967 by the scientific series Acta Forestalia Fennica, Silva Fennica, Communicationes Instituti Forestalis Fenniae, Folia Forestales, and Metsäteho Reports.
The aim of this paper was to shape and analyse certain alternatives in the development processes in the organization chains of Finnish forestry. The material was collected by analysing market structures and characteristics of competition with regard to raw wood and forest industry products.
The paper presents two alternative ways to rationalize the organization chains between the forest owner’s organizations and forest industry. In the price mechanism of raw wood originating from Finnish private forests there there has been increasing influence of the central organizations of the private forest owners and forest industry. In their relationship, the model of bilateral monopolistic competition can be chosen as a conceptual framework.
Under bilateral monopoly price is fixed as a result of negotiations between competitive parties, and the position and tactics within the negotiations are of great importance for the negotiating parties. Because of the competition, Finnish forest industry cannot compensate the increase in the production costs by raising independently the export prices of its products. This and the fact that the annual earnings of forest workers are fixed by law to the earnings of the workers in wood-processing industry, will cause pressure on stumpage prices.
In the paper two schemes are outlined. In the Scheme 1 a development alternative is described in which the organization chain of private forest owners is supposed to develop to the industry growing direction. In the Scheme 2 the organization chain of private forest owners is supposed to develop to the organizational orientated direction.
It is concluded that as long as the forest owners’ organizational orientated central organization is too weak to form a monopoly as counterweight to the monopsol of forest industry (except the industries of forest owners), it will consider the industry growing direction superior to the organizational orientated alternative.
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In 1965, the Society of Forestry in Finland (now the Finnish Society of Forest Science) appointed five working groups representing various fields of forestry to get a general view of the present stage and future need of development of forestry research. The present paper gives a summary of the reports prepared by the working groups and presents some suggestions concerning improvement of the general condition for forestry research.
First, an account is given of the present stage of forestry research; this is done in the form of a list including the institutes where forestry research is practiced. The most important of these institutes are the University of Helsinki, which in 1966 employed 42 research workers, and the Finnish Forest Research Institute which employed 52 investigators. The total number of research workers was 114. The funds available and the financial sources are also dealt with, as well a as the aftergrowth of research workers and the publishing activity.
In addition, a review is presented of the most important tasks of research according to the reports of the working groups. Finally, an account is given of the program of development. According to the program, the number of new researcher’s positions required has been estimated as being rather large. Development of the research activity organization presupposes establishment of some new departments at the Finnish Forest Research Institute and at the University of Helsinki; moreover, a common laboratory as well as a forest-machine station are required. The funds needed at the most important state institutions will be about 90% higher in 1970 and 190% higher in 1980 than at present. The aftergrowth of research workers should be essentially increased and its distribution of the fields of forestry should be more even. No new series of publication have been considered necessary.
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The article is a report from the meeting of the Section 32 of the IUFRO in Canada on September 15.–25. 1964, which three Finnish forestry experts participated. The theme of the meeting was classification of forest terrain.
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The paper lists the forest publications of forest scientific research published in Finland in 1966 in alphabetic order by the different scientific series, Acta Forestalia Fennica, Silva Fennica, Communicationes Instituti Forestalis Fenniae, Folia Forestales, and Metsäteho Reports. It also includes book reviews on forest literature.
The purpose of this investigation was to study the felling volume and its structure in the State forests of Finland. Special attention was paid on the proportion of waste wood within the felling volume. This information was in demand for the general plan of the State forests that was being prepared at the same time. The survey was performed using a sampling method, and it represented the districts in the northernmost Finland, Ostrobothnia, Eastern Finland and Western Finland of the Forest Services.
The proportion of merchantable timber of the total felling volume was lowest in the northernmost Finland, less than 2/3 of the total cut. In Ostrobothnia the share was ¾, Eastern Finland 4/5 and in Western Finland 5/6. When the tree species were compared, the proportion of waste wood was largest in broadleaved trees, especially in the Northern Finland, while for Scots pine it was lowest. For Norway spruce the share of merchantable timber is markedly lower in the northernmost part of the country, where, for instance, decay increases the proportion of waste wood. For birch, demand of wood influences most the proportion of waste wood.
In general, the proportion of waste wood and merchantable timber in the felling volume was influenced by changes in the demand of timber, structure of the stands, and the felling method. The demand of the timber assortment affects most in the amount of waste wood. The more valuable the timber assortment is, the less waste wood is left in the cutting area.
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In the 1930s studies showed that state of the standing crop and forests of small private forest holdings in Finland was weak. In 1960s it was regarded necessary to study the possible change in the silvicultural state of these forests. Therefore, sample stands of the small holdings surveyed in 1930 by Osara were surveyed anew in the areas of Karelia and Savo, and in Central Finland in 1963–1964. A line plot survey was combined with ocular estimation as in 1930, but in 1963–1964 the lines and sample plots were placed denser than in 1930 to reach similar number of sample plots.
In 1930 the state of the forests of the small holdings was in average very weak, but according to Osara, the age classes younger than 50 years had similar stand volume than in the all the forests of the southern half of the country. The results of this survey show that the volume, structure, growth and development class structure of the forests in average have improved since 1930. In many respects the forests have reached the average state of forests in the southern half of Finland. The most serious problem is the large proportion of broadleaved trees. Thus, the silvicultural state of the forests should be further improved.
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According to the statistics, the fuel wood consumption in Europe has declined since 1925/1929, when the total fuel wood consumption was 144 million m3. In 1960 the consumption was 108 million m3. Because of insufficient statistics in the early years, the drop may even be larger than shown by the figures. The aim of this paper is to assess what part of European fuel wood removals in 1960 could be used for industrial purposes by 1975.
It was estimated that in 1975 the use of fuel wood in Europe will be about 45–55 million m3 less than in 1960 and about 10 million m3 of this amount will consist of coniferous species. It is believed that about 45 million m3 could be transferred to industrial use by 1975, and 55 million m3 is supposed to be the maximum reduction achievable by 1975. The estimates are based on the revised European fuel wood removal figures.
The new European timber trends and prospects study reveals a shortage of small-sized coniferous wood of about 25–43 million m3, depending on whether the exports from Europe are curtailed or not. The decrease of coniferous fuel wood of 10 million m3 could almost entirely be transferred for the use of industry.
A more important question is, is there demand for the extra small-size broadleaved wood. It is important to note that there is no longer any technical limitations on the use of this kind of wood for producing pulp, paper paperboard and wood-based panel products.
Fuelwood is often collected by the farmer and used near the farm. If the wood is to be used in the industry, harvesting and transport costs need to be decreased. However, productivity of the logging and transportation may be significantly improved by cutting the trees into longer lengths and professional harvesting. About 40% of the potential transfer of fuelwood to industrial uses is concentrated in Finland (7 million m3), France (5 million m3), and Italy (7 million m3). Other countries with significant potential shifts could be Romania, Spain and Yugoslavia.
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The Economic Council asked Heikinheimo, Holopainen and Kuusela to prepare a report on the development of Finland’s forest resources up to the beginning of the next century. The expansion of forest industry beyond the level foreseen in earlier forecasts, the large-scale removal and neglect of the basic improvements required have weakened the condition of the wood production to such an extent that extensive measures are needed to ensure the continuity of the supply of wood. The results of the calculations are formed in three separately analysed alternatives.
Alternative I: Realisation of the Teho programme and the removal corresponding to it. The development of the growing stock according to the programme would only permit a cut amounting to an annual drain of ca. 51 million m3 up to the year 2000. After that it would be possible gradually to increase the removal. This drain would not itself to utilise fully the already existing production capacity of the industry.
Alternative II: Consequences of the predicted removal if the Teho programme is realised as such. The wood utilization forecast based on the premises given to the team show that the annual drain will grow in 1964–1975 from 52 to 58 million m3, and thereafter by 0.5% annually. This would lead to over-cutting, and exhaust the present growing stock by the turn of the century. If annual total drain of ca. 58 million m3 would after 1975 be sufficient, exhaustion of the growing stock would be postponed for 4–5 years.
Alternative III. Teho programme expanded in conformity with the removal forecast. A new programme is proposed, which includes, among others, large scale fertilization of fully grown firm forest land at about the rate of 100,000 ha/year, intensified artificial regeneration, assurance of the supply of planting stock and seed, increase of forest drainage from the present 155,000 to 250,000 ha/year by 1970, site preparation of the cutting areas for artificial regeneration, increase of tending or seeding stands to 300,000 ha/year, replacement of fuelwood by other fuels, increase of wood import and new forest roads.
The present study is an attempt to clarify the decrease in growth, or the increment loss, caused by sudden reduction of growth of the growing stock below a certain level, and to find a method for its determination. Increment loss is defined as a decrease in growth during the rotation due to a deficient stock volume. The material consists of Koivisto’s yield tables for repeatedly thinned stands in Southern Finland, and the results of the Third National Forest Inventory concerning the mean volume and increment in the productive sites.
For the calculation of increment loss three formulae were constructed where the increment loss is calculated 1) as the difference between the removal by thinnings in normally developed stands during a time equal with the period of deficient stock and the suddenly removed stock, 2) according to the compound interest calculation principle as the sum of the differences which are obtained by subtracting from the removal in each thinning during the period of deficient stock its initial value, and 3) as the straight interest of the stock deficiency during the period of deficient stock.
According to the calculations, the increment loss is greatest in stands to be grown, viz. 50 m3 solid measure excluding bark per hectare tended Norway spruce stands on Oxalis-Myrtillus type sites at 40% deficiency below minimum stock. In stands to be regenerated the losses are, too, greatest in the similar stands. It exceeds 200 m3/ha when stands younger than 50 years have to been regenerated and the removal amounts to 50% of the stock. In stands to be regenerated the increment loss for spruce, due to the slow initial development by the species, is greater than for Scots pine and birch. The loss is the same at different period of age if the relative deficiency of the stock is of equal size.
According to the study, each stand has a characteristic variation in the increment loss which depends mainly on the relative degree of deficiency from the minimum stock. The formulae and methods can be used to determine the increment loss in average and better stands in Southern Finland when the stock suddenly decreases.
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The Finnish Government appointed a committee in 1959 to study the drawbacks of the present system of forest taxation, and to make recommendations for their elimination. It was not within the Committee’s terms of reference to decide whether the present taxation procedure, which is based on assessment per unit of area, should be replaced entirely by another system.
The committee made several proposals to mitigate the hardships entailed in the collective nature of Finnish forest taxation. It also proposed tax relief for areas which are to be the main target of forest improvement work. Among the other recommendations of the committee, can be mentioned simplification of the taxation in Northern Finland by having only two yield classes for that region.
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No other manifestation of life is allied more conspicuously to the theory of relativity as the growth of forest stands which is a function of the inherent growth potential of trees, the productive capacity of environment, and time.
The height over age quotient of a forest stand is usually the most reliable indicator of the productive forces of the habitat. Stem analysis have shown that increment of a tree at different ages is closely correlated with the extension of roots into individual geological horizons of different productive capacity. Growth curves of stands of a same tree species growing on different soils can be disparate due to different conditions. The temporal variety of tree growth on different sites is of prime importance in the construction of yield tables. Investigations of natural plant communities of Finland provided one rational approach towards the construction of yield tables. By confining mensuration analyses to define floristic types, the Finnish foresters harmonized their records with Einstein’s formula for space-time matrix of material events.
On the basis of time studies on pruning, one thousand stems in four stands was pruned, carried out in 1962. The work was done in two phases with Olli pruning saw, first attached to a shaft about 1.8 metres long and the to a shaft about 4 metres long.
The total time of moving from one stem to another when pruning the stem varied from 0,28 to 0.31 min per stem in the different working sites. The resting time was 19–20% of the effective working time, which included actual pruning time and the moving time. In average, 7.5% of the actual pruning time was unproductive. The actual pruning took in average 0.75–1.1 min/stem in the different sites. The time depended on size of the tree, the DBH, and on the length of the part to be pruned. The total working site time for the pruning was in average 1.34–1.98 min/stem. The output of the work per 7 hours’ working day varied from 226 to 280 stems, and the costs from 10 to 14 pennies per stem.
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This paper describes different methods of long-term forecasts in forest management planning with a special attention on intention forecasts for a total forest property or district. Methods for calculating the sustained yield on the basis of the actual increment or the yearly area cut are discussed. It is concluded that a better estimate of the sustained yield is obtainable by the application of a long-term forecast technique. Forecasts for 100 years should not be viewed as plans, but as a background for making short-term decisions. Some of the long-term-type programmes, such as the programme of maximum profit, sustained yield in volume and in money are discussed briefly.
It is pointed out that there is often present a conflict between the various elements of the policy formulated by a forest owner. This leads to the conclusion that the calculations of the profitability of single projects may be misleading.
The precision of a long-term forecast is discussed, and how under certain assumptions the error of the allowable cut is influenced by errors in area, volume, age etc. It is shown that the precision in area and volume is more important in this connection than, say, the precision in increment. In conclusion, existing knowledge, methods and equipment for calculations constitute a basis for long-term forecasts which make them an important instrument in forest management planning.
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The present article reviews a geological report given by Daniel Tilas, a Swedish mining manufacturer, towards the end of the 1730s as the report regards information on the Finnish forests. His report gives at hand that forests in several localities southwest of the region demarcated by the towns of Loviisa, Äänekoskei and Kristiina were seriously diminished or burdened by tar burning and shifting cultivation. Larger saw log stands were found mainly in the scaterly populated parishes of Central Finland. Thus, in the chain of ridges between Orivesi and Ruovesi, covering an area of about 4,000 km2, there was a heavily stocked Scots pine forest, as reported by Tilas.
The report given by Tilas is kept in the files of the Geological Research Institute in Helsinki.
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One forest drainage undertaking in Finland often consists of woodlots belonging to several owners, and over hundred owners may be involved. In the present paper a method for allocation the costs to different owners in a joint drainage undertaking is worked out. The problem has been emphasised by the new Waterways Law, which enables also such drainage projects to be undertaken to which some of the land owners oppose. In those cased the costs must be allocated according to the benefit driven by each owner from the project.
The method attempts to assess the benefits to be driven from the forest drainage, those costs of the drainage that are joint and thus subjected to allocation, and what is the area affected by drainage as used as a basis for cost allocation.
The joined costs are apportioned in the following manner. The area of peatland adjusted to differences in the benefit obtained by drainage is ascertained by the land holder by multiplying the index number by the corresponding areas. In the case of cultivated agricultural land, also an index showing the need for drainage is used in computing the adjusted area. Each topographic unit in the map is provided with a notation of its apportionment area. Joined costs are allocated to different land owners in relation to their adjusted land areas.
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The agricultural committee appointed by the Finnish Government in 1958 pointed out a problem that the rural population needed to be ensured employment and earnings from forestry. A forestry study group was called to investigate the effects of forest improvement on employment and income, on four fields: a) forest drainage, b) afforestation, c) thinning of young stands, and d) construction of forest roads. Items a, b and c increase output, and d creates outlets for timber and increases stumpage value.
The study outlined three alternative silvicultural programmes. The Basic Programme corresponds average forest management in Finland in 1953–1959. The Medium Programme can be seen conditional to the realization of the felling plan worked out in a study group Heikurainen-Kuusela-Linnamies-Nyysönen in 1961 in a committee report of Forestry Planning Committee. Finally, according to an Intensive Programme to which forest management, especially afforestation and forest drainage, will be raised to the highest possible level.
The costs of different silvicultural measures of the three programmes were estimated. The allowable cuts were calculated corresponding to the silvicultural programmes for the period 1961–1970 and 2001–2010. After calculating labour input and costs, could the increase in employment and income be estimated for the whole economy, and separately in forestry, communications and industry. When calculating the labour input required for the forest management work and road construction, the probable rise in productivity following mechanization and rationalization has been taken into account.
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The aim of this study was to find out to what extent it is possible to time phases of work by making instant observations at regular intervals according to the principles of the method of random samples, and arrive at similar results as obtained by timing continuously with a decimal-minute stop watch. In the first mentioned method the observer of the time study is given a sound signal at even intervals, in this case each 1/10-minute period, during the signal he records the phase of work (element) the object is performing.
The material of the study consists of studies in skidding and loading in connection with transportation by tractor during a period of 8 days. The duration of each element in using tractor hand in skidding and hauling was measured with an ordinary stop watch using repetitive timing. This material was then converted into random sample material.
The analysis of the material showed that the method of random samples yielded observations from all phases of work present in the material obtained by measuring with the stop watch. The duration of elements as determined by the random-sample method were of the same order as determined with stop watch. The results did not cause any observable systematic deviation or rhythmic repetition of elements.
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In connection to the Third National Forest Inventory of Finland, two survey strips in the northernmost Finland were photographed on scale 1:15,000. Infrared films and a yellow filter were used. For the present experiment a total length of 66 km of the strips was photographed. The strips were surveyed visually from the ground by stands. Sample plots were measured at kilometre intervals. The aerial photographs were surveyed the distances covered in the ground. The work was aided by stereograms which showed 16 large-size sample plots localised on aerial photographs.
The main groups of land identified along the survey line were productive and poorly productive forest land, wasteland and another land, in addition, peatland and firm land were distinguished. Although some differences were noted, the two survey methods provided fairly similar results. For an estimation of the tree species composition the material is one-sided since the district is mainly Scots pine. The principal tree species was successfully distinguished on aerial photographs in 78 out of 82 comparable pairs.
The mean of ground observations of dominant height of the stands was 10.9 m, that of observations on aerial photographs 11.2 m. The result of stand volume estimates reveals a distinct correlation between the various methods of estimation.
In an earlier study it was shown that it is possible, using a stand volume table based on characteristics revealed in aerial photography, to create a general idea of stand volume on the southern half of the country. A few additional factors, of interest for the stratification necessary in forest inventories, were also studied. A distinct correlation was observed between the results of aerial and ground survey for all the characteristics discussed. The present experiment showed that the prerequisites for stratification through aerial photographs do exist. Further investigation is needed into the most appropriate methods for stratification in each situation.
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The Finnish Society of Forestry (now the Finnish Society of Forest Science) celebrated its 50 years’ jubilee in 29th April 1959. This publication includes description of the ceremony. Included are also the greetings, and speeches held at the celebration meeting.
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The present publication concerns the report of the committee appointed by the Finnish Government to draft a programme or the development of Finnish forestry and increase of its production.
Part I of the paper reviews the development of forestry and forest policy in Finland. After the World War II – following the land settlement – ca. 1.5 million hectares of land, mostly owned by the state, was transferred to private ownership. The committee states that because the division of small farms and land settlement policy private forests have tended increasingly to become small forests. The decrease in size of forest units has interfered development of forestry. In part II, the forest utilization programme for the period 1963–1972 is outlined. In the country, logging in 1953–1958 was carried out on a fairly sustained yield basis. The regional picture is, however, not as good, and in Southern Finland there has been over-cutting.
A long-term logging plan was prepared on the request of the committee. The allowable cut following this plan would suffice the calculated wood requirement for the years 1963–1972. In the part III, the committee introduces a silvicultural program for the years 1963–1972 to increase the yield of wood. The targets of logging, sowing and planting, and silvicultural work are considerably greater than what was achieved in the 1950s. To speed up the realisation of the silvicultural programme, working plans should be prepared on a large scale for forest enterprises, afforestation and forest drainage should be increased, and a national seed storage should be established.
Part IV discusses the forest work situation from the stand point of the realisation of the forest utilisation programme and silvicultural programme. Part V introduces a host of recommendations concerning forest policy and economic policy.
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In 1956 the Finnish Government appointed a committee to plan the promotion of forest research in accordance with the needs of the national economy. The present publication contains an account of the committee’s work and its recommendations.
Attention is drawn to the fact that forestry in Finland is a natural and important means of livelihood. Hence forestry research must be effective and versatile, for extensive forestry calls for intensive research. In the subsequent chapters, a historical survey of forest research in Finland is presented, including a list of the institutes, organisations and other bodies active in this work. Finnish forest research is mainly centred around Forest Research Institute, which was founded in 1918, and similar research is also pursued at the University of Helsinki, as well as by many other institutes and scientific societies.
After a reviewing the present needs for research and the demands intensive forestry sets upon scientific investigation, the committee concludes that contemporary forest research in Finland cannot completely satisfy these demands. Consequently, the country’s research institutes should be expanded and developed considerably.
The recommendations concern mainly the development of the Forest Research Institute. The committee suggests doubling the personnel of the institute, creating several new departments and increasing the financial allocation to the institute. Certain reforms in the administration of the institute is also recommended. Special attention is drawn to the development of the publicity service. Also, the research in the forestry departments University of Helsinki should be developed. National and international co-operation between various research institutes and organizations should be improved.
The report is supplemented by a draft proposal concerning legislation on the Forest Research Institute, a plan for developing the training of research workers and a recommendation on the retention of certain land areas for scientific and experimental work carried out by the Forest Research Institute.
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Finnish legislation concerning settlement states that a farm should be able to provide, according to the various local conditions, their owners together with their families possibilities for a) living based on agriculture and forestry, b) part of their living the bulk of it acquired outside the farm, or c) part of their living from the garden, and possibly part of it by livestock, in addition to from work outside the farm. The present analysis discusses the earning opportunities of the inhabitants of small farms, characterized by the fact that generally they are not able to ford their owners living obtained principally from agriculture and forestry.
According to the results of the 1950 General Agricultural Census of Finland, there exists in the country 74,134 holdings the size of 0.5–1.99 ha (dwelling farms), and 99,400 holdings the size of 2–4.99 ha (dwelling-and-cultivation farms). These small farms accounted for 37.2% of all farms in Finland. As a rule, it is possible to run a small farm only in such region, where favourable conditions give possibilities both for farming and for sufficient amount of wage-earning work outside the farm. Thus, location has a big influence on the financial status.
Dwelling farms were common in urban municipalities and near the coastal areas. Those situated in countryside were located in Eastern and Northern Finland. Dwelling-and-cultivation farms were few in the coastal regions, but they predominated the municipalities of the watershed districts near Jyväskylä, and eastern and northern parts of the country. The forests of the small farms were too small to provide additional income to the farms. Farms owning relatively larger forest areas were situated in the counties of Lapland, Oulu, Mikkeli and Kuopio, and farms with little forests in Turku and Pori County. Net out-migration has been substantial in the districts with a relatively large number of small farms.
The PDF includes a summary in English.
About one third of the land area of Finland is covered by peatlands, furthermore, some mineral soils are troubled by excess water. Due to the prevalence of peatlands, forest drainage has been the most important form of forest improvement work. Consequently, peatlands have been an extensively studied topic within forest sciences in Finland. This paper gives a review on the central research subjects in science of peatlands, introducing little less than a hundred of the hundreds of publications published in the field. The author describes in more detail research on the formation and area of peatlands, peatland types and their suitability for forest draining, site factors on peatlands, techniques of forest ditching and the management of peatland forests.
The PDF includes a summary in Finnish.
This book deals with the Finnish Forest Service, organization responsible for the management of the State forests of Finland, since its establishment in 1859 up to the present time. Attention is paid especially to the following topics: the area of State Forests and its changes; the organisation of Forest Administration; the promotion of transportation conditions for State forestry; silvicultural treatment of State Forests, their management and commercial activity; the Forest Service as an employer; the State Schools for training forest foremen; the activity of the Forest Service as regards private forests.
The PDF includes a short summary in English, a more comprehensive history of the Forest Service is published in Silva Fennica no. 112.
The paper is a review on the topics of Symposium on forest types and forest ecosystems, held in connection to the IX internal botanical congress in Montreal in August 1959, the chairman of which was Ilmari Hustich. The article includes 18 preparatory papers that were distributed among the participants of the symposium. The common theme of the papers was the question of finding common platform for the different schools of forest types and forest ecosystems. In addition to the papers, the article includes a summary of the proceedings and discussions of the symposium.
The following papers were presented in the symposium:
Aichinger, E. Können wir eine gemeinsame Platform für die verscheidenen Schulen in der Waldtypenklassifikationen finden?
Arnborg, T. Can we find a common platform for the different schools of forest type classifications?
Dansereau, P. A combined structural and floristic approach to the definition of forest ecosystems.
Daubenmire, R. Some major problems in vegetation classification
Ellenberg, H. Können wir eine gemeinsame Platform für die verscheidenen Schulen in der Waldtypenklassifikationen finden?
Hills, G.A. Comparison of forest ecosystems (vegetation and soil) in different climatic zones
Kalela, A. Classification of the vegetation, especially of the forest, with particular reference to regional problems
Krajina, V.J. Can we find a common platform for the different schools of forest type classifications?
Kühler, A.W. Mapping tropical forest vegetation
Linteau, A. Y. a-t-il. Un terrain d’entente possible entre les différentes écoles au sujet de la classification de types forestiers?
Medvecka-Kornaś, A. Some problems of forest climaxes in Poland
Ovington, J.D. The ecosystem concept as aid to forest classification
Puri, G.S. The concept of climax in forest botany as applied in India
Rowe, J.S. Can we find a common platform for the different schools of forest type classifications?
Scamoni, A. Können wir eine gemeinsame Grundlage für die verscheidenen Schulen in der Waldtypenklassifikationen finden?
Sukachev, V.N. The correlation between the concept ’forest ecosystem’ and ’forest biogeocoenise’ and their importance for the classification of forests
Webb, L.J. A new attempt to classify Australian rain forest
The Settlement Act (332/36) of Finland that regulated land-acquisitions was repealed by the Land Use Act (353/58), effective from the beginning of 1959. This paper deals with the effects land settlement and implementation of the acts has had on State forestry. The investigation concentrates on the magnitude of the losses caused by the land reform, initiated by The World War II, in time period of 5.5.1945–31.12.1957, during which time the evacuees from the areas transmitted to Soviet Union were settled. The first part of the paper summarises the history of landholding and the State Forests in Finland.
According to the study, the total area of cessions of the state forest land, based on land-acquisition legislation, rises to over 1 million hectares, about 10% of the land area. It seems that these lands have been better than the average forest lands of the state. In addition, about 100,000 ha of jointly owned forests were established on former state lands on the basis of the Settlement Act. Timber has also been collected for construction of the settlement from the State forests. The value of the land and the construction timber is estimated to be about 3,759 million Fmk.
It has been stated that settlement has increased supply of forest labour in rural areas, where there has been labour shortage in forestry. On the other hand, the State Forests have given seasonal work opportunities for the rural population.
The state forest holdings in Southern Finland are at present so small that it limits rational forest management in the area. It is concluded that it is possible that the state forests in Southern Finland will be used to provide supplemental land for the small farms. In the State Forests of Northern Finland are plans for establishment of new jointly owned forest and settlement. This poses a threat for the state forestry.
The PDF includes a summary in German.
The present bibliography is an index of publications brought out by the Society of Forestry in Finland (now The Finnish Society of Forest Science) in 1945–1960, a sequel of a similar index published in 1946. It consists a classification of the parts according to subject treated, based on the Oxford system, a system used in international forestry literature. The studies have been provided with Oxford numbers. The index includes the publications of Acta forestalia fennica (AFF), Silva Fennica (SF) and the Commentationes forestales.
The PDF includes a summary in English and German.
In 1957 the annual cuttings in Finland were 40.2 million m3 without bark. The aim of the study was to estimate the rate of mechanization of harvesting of timber in Finland, and make a prediction of the state of mechanization by 1972. According to the study, harvesting and transportation of the felling volume in 1957 would have required about 25.5 million working hours. Mechanization of forest work has decreased it only by 0.32 million working hours. The profitability of forest work has improved in 1950s, which is mainly due to changes in harvesting, such as shifting to longer lengths of pulpwood and props and cutting unbarked timber.
The study predicts that in 1972 it will take 14.8 million working hours to harvest and 5.4 million working hours to transport a corresponding felling volume as in 1957. However, a new way of producing timber or a working method of wood may change the picture completely. Reduction in harvesting expenses through mechanization may lead to diminishing the minimum diameter of logs, which affects profitability of work. It is also probable that mechanization of wood transportation will lead to working sites with longer distances of forest transportation. Also, industry using wood as raw material will also obviously expand.
The article includes a summary in English.
Professor V. Sukachev, a Soviet developer of the doctrine of forest types, published a guide to the study of forest types in 1931. He states in the introduction of the guide that his aim is to facilitate the work of beginners in determining forest types and to instruct them in developing methods for their description and classification.
This Finnish edition of the guide includes new picture material and has an extensive supplementary preface, written by the author, that presents his view on forest types. The guide describes the concept of forest types, methods of describing forest types, guidelines to material collected in the forests and principles of classification of the different forest types.
The Law on Forest Management Associations was passed in 1950. According to the law, forest owners have to pay a forestry fee, which is used to finance local forest management associatons. The effect of the law on Finnish private forestry is considered to be significant.
The number of consulting forest officers has increased by 95% and the labour input by 107% since the law came into effect. Thus, the guidance available for forest owners has increased markedly. 85% of timber cut from private forests are marked by professional foresters, while the share was earlier less than 30%. The amount of forest management work, such as clearing of felling sites, sowing and care of plantations, has also increased.
On the other hand, experience has pointed out a need for revising some points of the law. To this aim, the Government of Finland appointed a committee to outline the ammendments. The present article contains the report of the committee.
The committee suggests that the forestry fee, that according to the present law is 2-6% of the net yield computed for communal income tax, will be changed to 2-5%. Further, forest holding in which the annual increment is less than 20 cu.m. are at the moment exempt from the fee. It is suggested that holdings with an annual increment of less than 30 cu.m. pay half a fee. In addition, the committee suggests some clarifying provisions to be adopted.
The article includes a summary in English.
The state of Finland had to intervene in the forest wages after the wages had dropped very low during depression in 1932-33. Even able-bodied workers were forced to resort to communal poor aid. Therefore, the Ministry of Communications and Public Works imposed in winter 1932-33 a study on the level of forest wages. Based on the investigations it was decided to develop control and guidance of forest and floating wages. A committee was appointed to follow the development of forest wages and to promote the formation of the wages on a reasonable level.
The country was divided into 14 wage districts, and for each district was confirmed an own norm of wages in accordance with the costs of living in the area. Inspectors controlled the wages primarily in such work places that were complaind of. Consequently, the earnings increased yearly in the 1930s.
During the Second World War, the main objective of economic policy of the government of Finland was to prevent inflation. The regulation of wages strived to compensate workers for the war-time rise in the cost of living. The Econimic Powers Act issued in 1941 was the first legislation that concerned regulation of wages. The Wages Commission prepared from the winter 1942 onward the wage tables per unit of forest works for employers. During the war, the employers were prepared to pay higher wages than the wage authorities considered possible.
Right after the war the main concern of wage control was that because of labour shortage forest and floating wages rose too high. From the end of 1948 onward, however, the principal task was to prevent paying of too low wages. Regulation did not succeed in preventing inflatory rise in wages in postwar conditions, and it was necessary to rise wages continually.
The Union of the Finnish Forest and Floating Workers was founded in 1946, and it concluded a collection agreement with the Employers’ Association of the Finnish Woodworking Industries in 1947. After 1949 the forest workers were represented in the Central League of Finnis Trade Unions (SAK). The regulation of wages ended in 1955, and after that the level of wages were negotiated by the labour market organizations.
The article includes a summary in English.
The article is a summary of a presentation by W. Wittich, held in the University of Helsinki in 26.4.1958.
The significance of fertility of the site in tree growh was known already for over 100 years ago in Germany, but after the First World War the view was abandoned in forestry. According to the Dauerwald system of managing forests that was introduced at the time, the type of site was considered relatively insignificant in forest management. Therefore, similar practices were used in all kinds of sites. The opposition against the use of this method resulted in new research on the site factors.
Knowledge of the relation of the site types and vegetation makes it possible to improve productivity: in regional planning the production that is considered to be necessary is assigned to the sites that have best conditions for it. For instance, in Niedersachsen county about 6% of the forest lands are reserved for cultivation of oak.
Another line of soil science studies the root causes behind the hands-on experiences of forest management. The aim is to abandon rigid approaches in forestry. Studying the effects of forest management practices on soil has been targeted, for instance, on effects of clear cutting on decomposition and vegetation, how the soil affects choice of tree species, and decomposition of litter from different tree species. Knowledge of soil and the trees’s demand of nutrients helps to mend disturbancies, such as nutrient deficiensies. Consequently, fertilization has become a new tool to improve productivity in forestry.
The article includes a German summary.
Agricultural education in Finland begun in 1840, when an agricultural college started its activity in the estate of Mustiala in Southern Finland. A decree published in 1896 stated that the highest agricultural education should be transferred from Mustiala to the University of Helsinki, and two professorships and an assistant professorship should be established. The first professor of agricultural chemistry was appointed in 1900, and the work to compile the scheme for the agricultural university studies was started. By 1957 the personnel had increased to ten professorships and 23 docents.
In 1924 the section of agriculture of the Philosophical faculty was changed to the Faculty of agriculture and forestry. By the spring 1957 a total of 2,180 Bachelor of Agriculture Examinations, 2,196 Bachelor of Forestry Examinations and 1,198 Candidate’s Examinations had been attained. Experimental farms were established in Viik an in Malminkartano in 1931, however, the areas were in the beginning leased to the Prison Administration. The farm in Viik had also laboratories for research purposes. In 1949 it was decided that also the agricultural institutes should be placed in Viik.
The highest forest education was established in a forest college in Evo in Central Finland in 1862. In 1900 it was suggested that also the highest forest education should be transferred to the University of Helsinki. It was affirmed by a decree in 1906. In 1957 there was 8 professors and 15 lecturers in the faculty. A large adjustment in the content of the examination was performed in 1951. Up to spring 1957 a total of 2,196 Bachelor of Forestry Examinations was achieved in the faculty.
The education of home economics commenced in the faculty of agriculture and forestry in 1946.
The article includes an English summary.
For many decades Finland’s forest policy has been focused on private forestry, accounting for approximately 60% of Finland’s forest area. The objective has been to regulate forest management by legislation and to promote private forestry. The aim of the study was to explore the role of the Central Forestry Association Tapio in promoting private forestry.
A detailed synthesis of Tapio’s 50 years long history and activities is drafted. According to the three forest inventories (in 1921-24, 1936-37 and 1951-53), big improvements have been made in cutting methods, mainly in the sense that selective cuttings have decreased. The condition of private forests is, however, not as good as that of the state and company forests. Improvements introduced in the legislation in 1928 have had great influence in forestation and drainage of peatlands in private forests. The private forests, however, suffer from a lack of planning.
Through Intensified forest policy it has been possible to ensure supply of roundwood for forest industry. An efficient information service on timber markets have been organized, and the measurement of roundwood has been standardized. Progress in the promotion of forestry has suffered from unfavourable trends in forestry, mainly from the nearly doubling of the number of forest holdings in the present century and from the contraction of their size.
The article includes an English summary.
The aim of the study was to compare the newly introduced brush cutter to ordinary hand tools in clearing of cutting areas and thinning young birch (Betula sp.) and Scots pine (Pinus Sylvestris L.) stands. Working with a prototype of the brush cutter, Brushmaster, reduced the total working time by 15-20% compared to bush knife and axe, in spite of the cutter’s weight. At rainy weather the advantage of Brushmaster dissapeared because of clogging of the cutter’s air filter. The prototype proved to be more effective when clearing a cutting area, and hand tools seemed to be faster if damage to the remaining trees have to be avoided.
In addition, eight either lighter or more effective motor saws or brush cutters were compared mutually, and the effect of motor effect, weight, handiness, arrangement of suspenders and handles is discussed. With these improved types of the cutter it was possible to shorten the total working time in thinning of stands (mostly clearing of young stands) to 30-40% of the total working time compared to hand tools. The most modern saws appeared to be best adapted in clearing cutting areas.
The article includes an abstract in English.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Finnish Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation decribes how the personnel of settlement commissions are to arrange travelling on settlement business, how travel claims should be written, and how daily allowances and fees should be paid and accounted for.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the administration and work of four settlement board offices, established in 1956 in Oulu, Kajaani, Rovaniemi and Kittilä in Northern Finland. The new offices were established to dissolve the waiting list of petitions, due to Second World War and increasing settlement activities.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses different ways to determine the price of growing forest stock in settlement farms. The Settlement Act describes the main principles for the evaluation of forests. The growing stock of forest land has been devided into valueable and small timber. Construction timber and valuable trees are marked separately, and small timber is estimated by line survey. According to the act, the total price of a farm should be only what a sensible buyer would pay for it. Therefore, the value must be reduced to a reasonable price if the added value of the different parts is too high considering, for instance, the location of the farm and construction and clearing costs.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the directions of Ministry of Agriculture in Finland, issued in 1947, concerning evaluation of settlement farms and supplementary lots. The new direction differs from the old ones especially in the evaluation of small timber. Arable land has to be valued at a price corresponding to its forest yield value. As it is a prequisite for the profitability of a new farm, the writer points out that such land should be valued at higher price than a corresponding forest land. A way to count out the price is presented.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation concerns the evaluation of forest land to be surrendered for a settlement farm. According to the Settlement Act, state land surrendered for settlement purposes should fetch the price that any sensible buyer would pay in buying the land. The prices used in evaluation are, however, still the prices of 1944. A new method for calculating the yield in terms of value of forest land has been developed by professor Yrjö Ilvessalo, based on the König-Faustman formula. This method is described in Tapio Forestry Manual.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
In 1925-1944 the Finnish Swamp Cultivation Association (now Finnish Peatland Society, Suoseura) carried out research on the arability of peatlands, mostly on state lands that were the main object of settlement work and the arability of which had been little explored. Later the work has been transferred to the Settlement Department of the Ministry of Agriculture (ASO) and some other authorities. ASO has prepared arability maps based on the nutrient analysis of the lands.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
Fellings of valuable timber in the forests to be surrendered for settlement farms have been discussed widely in Finland. This presentation describes the effects of the new section in the Land Settlement Decree and new directions given by Central Forestry Association Tapio based on the decree. According to the directions, the fellings have to follow legislation concerning other fellings in private forests. The felling of all large, valuable timber, as has previously been the custom in settlement farm forests, does not follow this principle.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
When resettlement plots have been established in Finland, a so-called household wood principle used to be used: in addition to fields, the new farm has been given forest land enough to supply it household timber. Trees larger than needed for construction of the farm were considered unnecessary, and the valuable timber trees over certain diameter could be harvested by the surrenderer of the land. This has led to fellings at minimum diameter in contrary to rational forest management. The presentation describes new legislation and directions that aim at correcting the situation.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses the conditions of forestry in the small resettlement farms in Finland. The silvicultural condition of small farm forests has been found to be worse on average than that of big holdings. A difficult economic situation often forces the owner into excessive fellings. The forest owner of a settlement farm should, therefore, be given possibilities to adequate living opportunities. Therefore, the new Resettlement Act aim at supporting a so-called forest principle, which is based on a view that it is not possible on a small farm to earn a living by agriculture only and some forests must be connected to it.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The main part of arable land that could be cleared out into fields lies in Northern Finland, where climate conditions restricts agriculture. This presentation discusses conditions for profitable agriculture and settlement activities in the north.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
In 1950s in the administrative region of Northern Finland 2,951 million ha of state forests awere under economic management while 3,285 million ha were not managed. Settlement activities mostly took place in the area that was managed, and where fellings were arranged in a centralized way. In these areas logging costs were minimized by, for instance, constructing roads, improving floating channels and constructing camps. This presentation describes ways to coordinate and rationalize both the settlement activities and fellings in these areas.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for forest officers working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The Land Settlement Act gives the landless population of Finland right to apply resettlement farms or supplementary state lands from Forest Service that manages state lands. After the Second World War the settlement work intensified markedly. This presentation describes guidelines for establishing holdings and supplementary lots on state lands.
Silva Fennica Issue 92 includes presentations held in 1956 in the 8th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Marjanen, T. Establishment of holdings and supplementary land lots on state land
Lifländer, A. Centralized fellings in North Finland and the settlement question
Väisänen, P.O. Establishment of farms and their profitability with particular reference to agriculture in Northern Finland
Lilja, V. Forestry on settlement farms
Hyttinen, O. Valuable timber trees on settlement farms
Piepponen, P. Marking of construction and other valuable timber in the forests of settlement farms
Kotiaho, A. Arability research, its execution and information on the result
Karisto, U. Economic viewpoints in the establishment of a farm or a supplementary land lot
Linnamies, O. Calculation of yield value of forest land
Johansson, E. Viewpoints on evaluating settlement farms
Klemetti, V-K. Evaluation of growing stock in the pricing of settlement farms and composition of the total price of a farm
Leino, P.K. Special offices for settlement boards, their employees and the organization of field work
Nieminen, E. Charging for travel, daily allowances and fees in settlement work
The issue includes short English summaries of the presentations.
The Finnish Government appointed a committee in 1955 to analyse the economic status of the population living from agriculture. The present paper contains Part II of the proceedings of this committee. It discusses the earnings of the agricultural population from forestry and occasional work.
Agricultural population was defined as all people living from holdings of at least 2 hectares of agricultural land. Forestry income includes, besides the value of stumpage sold, earnings from logging in connection with delivery contracts. Earnings from occasional work include wages for logging made to the account of someone else, as well as wages for agricultural work, floating, carpentry, road construction and maintenance work etc.
In 1951–1954, the farms in Finland received an average aggregate of 29 milliard Fmk for stumpage, 10 milliard Fmk of which consists of the value assigned to the timber consumed by the farms themselves. The average income from stumpage was 110,000 Fmk per farm. The earnings from logging in connection with delivery contracts amounted to 3.3 milliard Fmk, and the earnings from occasional work to 6.7 milliard Fmk. The income from stumpage together with the earnings from delivery loggings amounted to 123,000 Fmk per farm. Adding the earnings from occasional forest work, an aggregate forestry income of 150,000 Fmk per farm has been obtained, 70–75% of which accounts for stumpage price.
The occasional earnings from sources other than forestry were on average 12–13 milliard Fmk, or 45,000–50,000 Fmk per farm. The agricultural income of the farms was 60.4 milliard Fmk, or 230,000 Fmk per farm. Thus, the aggregate income of the farms was 110 milliard Fmk, or 420,000 Fmk per farm.
The financial surplus from forestry per farm for the farms included in the study in 1951–1954 was on average 21, and the income from forestry 18 times as high as in 1934–39. The income from stumpage at the end of the same period was 18, and the earnings from occasional work 27 times as high as at the beginning of the period.
The agricultural income has the greatest relative importance in Southern Finland and Eastern Bothnia. The income from stumpage, in turn, has the greatest relative significance in supporting agriculture in the inner part of Finland, while the occasional income plays its most vital role in northeast Finland.
The PDF includes a summary in English.
In 1933, forest fire caused by locomotive sparkle burned about 600 hectares of forest in a forest district named Vehkatallinmaa, in Central Finland. In 1934–36, the burned area was reforested, using different sowing and planting methods. At the same time, areas with poor runoff were drained. The results from reforestation throughout the area have been good. Also, natural regeneration of coniferous trees, especially Scots pine (Pinus sylvestris L.) has occurred. Even deciduous trees, especially birch (Betula sp.), have regenerated naturally in the area. The forests are an evidence of the adaptability of broadcast sowing on snow crust as a method of reproduction.
The PDF includes a summary in English.
The study is continuation of the earlier structure and growth studies of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) in Forest Research Institute. The material represents birch stands (Betula verrucosa, now B. pendula, and B. Pubescens L.) in Southern Finland. The stands were treated with different fellings, and in regard to their silvicultural condition classified as good, satisfactory and unsatisfactory. Height of the trees, height of living crown, volume, increment and volume increment and development of stem diameter series was measured.
The most characteristic difference between the silviculturally good and poor stands was that the the annual increment of the good stands concentrated into large size trees, and the increment of unsatisfactory stands into small and inferior trees.
It is concluded that if the aim of stand treatment is to produce large and high quality volume increment, the most favourable stand volume of birch stands, compared with naturally normal stand volume, seems to be 90-85% at the age of 41-55 years, and 80-70% at the age of 56-65 years. If growth of large size trees is aimed at, the maximum number of the dominant trees per hectares cannot be more than 400 at the age of 50-60 years.
The article includes a summary in English.
The ministry of agriculture appointed a committee to prepare a proposal for the reorganization of Finnish forest statistics. The committee suggests that the forest statistics will be prepared by forest district board areas. National forest surveys and national wood consumption surveys should be carried out at intervals of 10-15 years by Forest Research Institute.
Felling and price statistics for private forests should be prepared by using a sampling method described in the report. The statistics of total commercial roundwood felling will be obtained by adding to the result the annual felling from state and company forests. Also, wage and employment statistics in forestry will be prepared by a sampling method.
Statistics concerning timber transportation should be improved, and finally, a central organ for forest statistics should be established within the Forest Research Institute to collect and develop forest statistics. The statistics should be published as an annual yearbook. To ensure co-operation between the authorities, a special sub-committee should be appointed to collaborate with the permanent committee of statistics in Finland.
Increase in the elk (Alces alces L.) population and the problems of its grazing has called for detailed research. The present study concentrated on three observation areas representing northern, western and eastern parts of Finland. There were 28 field observers watching 68 elks.
Earlier investigations in Finland indicate that aspen (Populus tremula L.) is the staple diet of elk. This study reached different conclusions, probably largely because of aspen is gradually becoming an increasingly rare tree species in Finland. According to this study, the principal food of elk in the winter is willow (Salix sp.). In the whole country, willow accounts for about 70% of elk’s nutrition. In the Far North the percentage is approx. 90. Of the other tree species, the order of preference is: aspen, Scots pine, mountain ash, juniper and birch. In addition, in Western Finland where snow is less deep, lingonberry and blueberry shrubs are on the menu. Beard moss on the spruce was frequently eaten locally. Elk seems to have eaten mainly the last annual shoot of trees and bushes. In few cases it has gnawed the bark of Scots pine, aspen and willow. Elk consumes in average 340 twigs or terminal shoots per day in the winter. This corresponds to about 1.8 kg of food.
The problem of elks damaging Scots pine seedlings has been observed in Western Finland, were the elk population is higher. The article suggests that suitable feeding places would be left for elk in places that are unsuitable for agriculture or forestry. Leaving, for instance, birch seedlings in Scots pine stands has been noticed to attract elks and to increase the damage to pine.
The article includes an abstract in English and a summary in Swedish.
Wood demand and practices in the marking of trees for cutting have affected the silvicultural state of the forests of Finland in the early 1900s. The aim of the study was to study the development of timber sales and the marking of trees for logging, with a special emphasis on variation in the volume of the sales and assortment range. The study is based on statistics of the District Forestry Boards and Forest Management Associations about timber marked for cutting in 1931-1953.
The professionals in the District Forestry Boards and Forest Management Associations have marked annually in average 9 million stems of heavy timber and about 7 million m3 of stacked wood for sales. The volume follows business cycles, the changes in the volume of stacked wood being larger than of heavy timber. When demand was high, the number of professional workers limited the supply of wood. There were large differences in the volumes marked within the country. The share of small diameter stacked wood has increased since 1930s compared to heavy timber.
The article includes a summary in German.
The remote areas of Eastern and Northern Finland are mostly owned by the state. Forestry in these areas has been mainly managed by arranging temporary lodgings for the forest workers. A report on the suitability of forest worker villages as a more permanent solution to the accommodation problem was commissioned from forest officer Oiva Suominen.
Seasonal work, arduousness of the work and distance from home have decreased the attractivity of forest work as a profession. On the other hand, forestry has provided rural population work during winter, when there is little work in agriculture. To be able to increase permanent labour in state forestry, it is necessary to arrange permanent lodging to the workers and their families. Permanent workforce is needed to arrange wood harvesting and manage the state forests effectively. The article includes a suggestion of how to establish the forest worker villages. It suggests the locations and sizes for villages for the districts of Eastern Finland, Ostrobothnia and Perä-Pohjola.
The article includes a summary in German.
Prescribed burning has reported to avail forest regeneration, for instance, by releasing nutrients for the use of seedlings, changing the pH of the soil and decreasing competition of ground vegetation. The aim of the study was to find out if the effects could be verified. Sample plots were measured in the experimental area of Tuomarniemi, in Central Finland, both in previously burned and untreated seedling stands and young forests. The main species in the sample plots was Scots pine (Pinus sylvestris L.).
According to the results, prescribed burning prepares the soil for regeneration. Germination percentage of the seeds is higher on the burned soil. All the species, Scots pine, Norway spruce (Picea abies (L.) Karst.) and birch species (Betula sp.) grow faster. Prescribed burning increases the amount of birch seedlings by improving its regeneration compared to unburned sites. The seed trees survive burning better if they are tall and have short crown, and have thick bark. In general, prescribed burning improves regeneration in seed tree stands.
The article includes a summary in German.
When ditches are dug in forest drainage, smaller stones are removed by hand, but the larger ones require the use of explosives or stone lifting machinery. Use of explosives have been a more common method for the larger stones. Due to development of detonation methods, it has also been used for smaller stones than earlier.
The investigation was a time study comparing five different stone lifting machines. Time needed for different stages of the work was measured. The stages lasted approximately as long for all of the machines. However, the effectivity of the machines could not be determined, because the stones removed were not similar enough. Stone lifting machine Pekka appeared slightly more effective than the other four machines. It was also easy to assemble, disassemble and move.
The article includes a summary in German.
A Committee was appointed in 1946 by the government of Finland to draw a draft to substitute the 1928 Law on Private Forests. The article is a report of the committee, and gives a suggestion to a new Forest Management Law and Forest Management Decree.
The aim of the 1928 law was to prevent devastating fellings. The committee introduces a new concept, duty to tend forests in accord with the principle of progressive forestry. This principle is drafted in the first paragraph of the law: Forest should be so tended, protected and used that, as far as possible, the productive capacity of the soil will be fully utilized and economically profitable, and increasing yield secured.
The proposal also includes measures to prevent devastation, the concept of which has been changed from the previous law. For instance, a cutting which is in disproportion to the growing stock of the forestry holding is considered devastation. Responsibility for the measures to secure regeneration after felling rests with the forest owner if the felling has been carried out in line with sound silvicultural practice. The district forestry boards are suggested to be the organizations that supervise the observance of the law.
The article includes a summary in English.
The wages of logging and haulage has been dependent on the decisions of foremen. The aim of this study was to provide better insight on how working conditions in a logging site affect productivity of the work. Six working sites operated by Forest Service, Veitsiluoto Oy and Kemi Oy in the communes of Salla, Muonio and Kolari in Lapland were studied. The forests in the area were mostly Scots pine (Pinus sylvestris L.).
The effect of average volume of the stems, the average daily haulage over distances of various lengths, density of the stand and shape of the stem on effectivity was calculated. The size of the team was of considerable importance to the felling and haulage result in the Northern Finland where the feller assists in loading of the logs. One of the aims of the study was to find out what size of team is most advantageous for each haulage distance. The results show the optimum distance of haulage for teams of different sizes.
The article includes a summary in English.
Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes principles of breeding of forest trees and the selection of fast growing, healthy and qualitatively good trees, named plus trees, for seed production in Finland.
Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes a field experiment on the use of herbicides to prevent growth of ground vegetation in cutting areas before sowing. The study suggests that the chemicals used in the experiment were not effective enough to prevent growth of ground vegetation in the more fertile lands, but were effective in poorer lands. However, the treatment affected also growth of tree seedlings.
Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
Soil preparation improves formation of seedlings in natural regeneration sites. This presentation describes mechanization of the work using four different machines. According to the study, the effectiveness and quality of the work has improved compared to the earlier machines, and the method is becoming a competitive alternative to slash burning.
Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the factors that limit growth of trees in peatlands, and principles of draining of peatlands.
Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes history of wood harvesting and logging methods used in the state forests in Finland. The article discusses the problems caused by, for instance, of light sellection fellings to the silvicultural state of the forests. The silvicultural state of the forest could be improved by introducing silvicultural logging methods, and selection of seed trees to improve the genetic quality of seeds used in regeneration.
Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes problems specific to forest management of remote forests areas. The growth of the forests in these areas are often low due to, for instance, northern location.
Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes practical training of applicants of forest schools in districts of Forest Service, and suggest improvements in the training. The forest schools, operated by the Forest Service, educate forest foremen. Before the applicants can enrol in the school, they are required a 2 to 4 years long training.
Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses legal cases of the supreme court of Finland that are related to forestry and handle subjects that can be of interest to forest officers working in Forest Service. The subjects vary from sale of timber to unauthorized harvest of timber.
Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation introduces the principles of business cycles and describes how they have affected forestry in Finland.
Silva Fennica Issue 80 includes presentations held in 1952 in the seventh professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Effects of business cycles on forestry
Forestry related legal cases for forest officers
Practical training of applicants of forest schools in the districts of Forest Service
Forest management of remote forest areas
Forest management in the state forests
Forest management of peatland forests
Mechanization of ground preparation
Review of field experiments on the fitness of certain chemicals for use at seeding
Review of field experiments on the fitness of certain chemicals for use at seeding
The article includes an English summary.
The article is report of the Nature Park and National Park Committee appointed by the Government of Finland in 1950. It contains a proposal for establishment of new nature parks and natural parks on state-owned lands in Finland. The article also includes a draft of act and decree for establishment of the new nature parks and national parks.
In order to replace the nature reserves lost through the 1944 Armistice with new areas and to create a comprehensive network of nature and national parks, including Southern Finland, the committee proposes new protected areas. The proposal includes the following nature parks: Jussaari, Vaskijärvi, Vesijako, Sinivuori, Häädetkeidas, Salamajärvi, Ulvinsalo, Paljakka, Runkaus, Maltio, Sompio, and Kevo. National parks include Liesjärvi, Linnansaari, Petkeljärvi, Pyhähäkki, Rokua, Oulanka-Juuma, and Lemmenjoki. The total area of the suggested new 23 nature reserves is 1,425 km2. The committee suggets that the administration of the new nature parks and national parks should remain in the responsibility of Forest Service and Forest Research Institute.
The article contains a summary in English
The most common way to artificially regenerate cutting areas in Northern Finland has been sowing, which has, however, often given poor results. The aim of the study was to assess the success rate of sowing and study the causes of poor regeneration.
An inventory was made of 28 areas on Empetrum-Myrtillus and Hylocomnium-Myrtillus type sites sown with Scots pine (Pinus sylvestris L.) seeds in 1948-1950. In addition, to study the effect of substrata, a sowing experiment was established. According to the inventory, regeneration failed completely in 8 and partially in 6 of the 28 sown areas. Factors that explained the poor regeneration included unfavourable weather conditions in 1948-1952, insufficient clearing of sowing spot especially when the humus layer was thick, and insect damage by Otiorynchus dubius weevil.
The article includes a summary in English.
The aim of the study was to update knowledge of natural range of English oak (Quercus robur L.), European ash (Fraxinus exelsior L.), Norway maple (Acer platanoides L.), small-leaved lime (Tilia cordata Miller), wych elm (Ulmus glabra Mill.) and European white elm (Ulmus laevis Pall.) in Finland, and estimate how far north they could be grown as forest trees or as park trees. The study is based on literature and questionnaires sent to cities and towns, District Forestry Boards, districts of Forest Service, Forestry Management Associations and railway stations.
The northern borders in the natural range of the species succeed one another from south to north as follows: English oak, European ash, Norway maple, wych elm, and small-leaved lime. Occurrence of European white elm is sporadic. The English oak forms forests in the southernmost Finland, while the other species grow only as small stands, groups or solitary trees. According to experiences of planted stands or trees, the northern limits of the species succeed one another from south to north as follows: European ash, English oak, Norway maple, European white elm, wych elm and small-leaved lime. All the species are grown in parks fairly generally up to the district of Kuopio-Vaasa (63 °). The northern limits where the species can be grown as park trees reach considerably further north in the western part of the country than in the east.
The article includes a summary in English.
The government of Finland appointed in1949 a committee to draft a program to promote forestry and increase the production of forests in the immediate future. The committee regarded promotion of transportation of roundwood and fuel wood as the most urgent question of the assignment. A separate committee was assigned to give a report on floating.
The report gives a summary of timber transportation facilities. The importance of land transport, especially truck transport, has grown. This has influenced other means of long-distance transport, such as railways and floating. Building of truck roads can bring large areas of presently unaccessible forests accessible for forest industry.
The committee suggest improvements in road legislation. Improvements needed in the road system for better timber transport facilities are outlined. The committee gives a detailed list of roads, compiled by area. The total length of forest roads to be constructed is 5,584 km, and the estimated cost 6,702 million marks. Railroads would be built 1,453 km at the cost of 35,745 million marks.
The article includes an abstract in English.
According to the second National Forest Survey, peatlands covered before the World War II 11,156,000 hectares, 32% of the land area of Finland. The early drainage of peatlands in 1700th century had aimed at preventing frost and increasing area of agricultural land. The experiences proved that drainage of wet forests was lucrative also in the point of view of forestry. The drainage of state-owned forest lands was promoted by the Crown Forest Committee in its report in 1900. The systematic drainage work in state lands begun in 1909. In the end of 1920s 500-700 km of ditches was dug annually.
The drainage of private lands begun after 1928, when forestry promotion work in private forests begun. By the end of 1950, 4,815 forest drainage projects had been approved by the Forest Service in the private lands. In addition, 286,000 ha of peatlands was drained on work organized by the central forest associations in 1930-1950, and 239,272 ha by timber companies in 1902-1950. The drained area totalled 755,892 ha. The area of drainable and drained peatland was estimated to be 4.4 million ha.
The article includes an abstract in English.
The government of Finland appointed in 1949 a committee to compose new legislation for Forest Service. The article includes proposals for a Forest and Park Service Act and a Forest and Park Service Decree. The proposals are based on the previous decree on forest administration. The committee proposes changes in the sections of Forest Service. The management of peatlands and forests of the state will be in a same section, and all issues concerning the private forests in one section. State forests would be divided in three districts instead of the present four districts.
The committee will make a separate report on necessary reforms in the administration of Forest Service to ensure that the state forests of Finland will be managed effectively.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation introduces different forestry related statistics and discusses the potential use of statistics on the point of view of state forestry.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
Forest Service begun the aerial mapping of the state forests in northern Finland in 1948. This presentation describes the state of the work, practices and methods of the work.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the development of aerial mapping, its principles and methods. The use of aerial photographs and the costs of the method is discussed.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the development of forest haulage and long-distance transportation of timber. The article gives examples of improving the effectivity of horse hauling, use of tractors, loading of timber and floating, and gives examples of new equipment used in timber transport.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the work and methods of rationalizing forest work and forest management, and the organizations doing work studies. Examples of means to improve the effectivity of practical work are described.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the changes in employment relationship and gives guidelines for good management of personnel.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses accuracy of the quality grading of Scots pine (Pinus sylvestris L.) saw logs suggested by professor Ilmari Vuoristo based on a data collected by Valtiala. According to the study, greatest inaccuracies in the grading by visual inspection was caused by differences between the evaluators.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
Quality grading has been rarely used in pricing of saw logs due to lack of knowledge on how the quality of logs affects the value of the sawn wood. This presentation discusses the subject based on unpublished data professor Ilmari Vuoristo collected in 1930s on effects of timber grading on the quality and value of sawn wood. The quality classification developed by professor Vuoristo is presented.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes benefits of the qualitative classification of saw logs to forest owners and forest industry.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the uses and principles of different kinds of grading of saw logs.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the grading of sawn timber for export and domestic use, and suggests improvements to grading of the sawn products in the saw mills to better answer the needs of export.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the development of standards for timber grades in Finland, and the present quality grades of raw timber for timber sales from state forests.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the history and present stage of forest drainage in Northern Finland. The first peatlands were drained in the area in 1909. About 6% of the 600,000 hectares of peatlands suitable for drainage was drained at the time in Perä-Pohjola. The areas to be drained are characteristically very large.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
Lapland war in the end of the World War II left Northern Finland in destruction. This presentation describes in detail the work and expenditure of Forest Service in the reconstruction of the settelement in the area.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses opportunities to increase the use of working machines, such as tractors, in construction of roads and floating channels, which have been little used in Finland. The presentation summarizes the machines available and their use based on experiences in Sweden.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses forest resources and felling potential of the state forests in different parts of the country, and how centralized fellings could be arranged. Most potential for increasing fellings is in Northern Finland.
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation includes the opening words for the course by Dr. M. Lappi-Seppälä
Silva Fennica Issue 69 includes presentations held in 1948-1950 in the fourth professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Opening words of the course
Large scale worksite
Use of machines in construction of roads and floating channels
Floating in northern Finland and its challenges
The role of Forest Service in the reconstruction of Northern Finland
Draining operations in the state forests of Perä-Pohjola in Northen Finland
General qualitative requirements for roundwood
Qualitative classification of saw logs based on the use of sawn wood, sorting and test sawing
Classification of saw logs
Benefits of qualitative classification of saw logs
Value grading of Scots pine saw logs
Accuracy of qualitative classification of saw logs
Modern management of personnel
The present stage of rationalization
Accomplishments in timber transportation
Aerial mapping
Use of aerial photographs in state forestry
Use of statistics in forestry
The Forest Research Institute of Finland has established permanent sample plots to survey the effect of thinnings on the stands. This study compares the development of tended and natural Scots pine (Pinus sylvestris L.) stands growing on three different forest types: Oxalis-Myrtillus, Vaccinium and Calluna site type. The effect of heavy thinning from below (Oxalis-Myrtillus and Vaccinium site types) and increment felling (Calluna site type) was assessed by dividing the trees of the stands in tree classification classes according to their crown storey and defects.
The results show that thinning from below and increment thinning increase the proportion of trees in the 1st crown storey, which is already large in the natural stands. Also the diameter distribution is more even and the mean diameter higher after the thinnings.
In Scots pine stands in natural state, volume increment per stem is highest in the 1st crown storey and diminishes strongly towards the lower crown storeys. Thinnings increased the increment. The study indicates that many of the objectives of the intermediate cuttings, including promoting the growth of the best trees and improving the quality of the stand, have in general been achieved. Consequently, the thinnings give means to achieve the most valuable yield in the stand.
The article includes a summary in English.
Fuel shortage during and after the Second World War compelled the Government of Finland to improve the fuel supply. In 1948 the Government appointed a Committee to draft a proposal on use of domestic and imported fuels. Special attention was placed on how to develop use of peat as fuel.
In rural districts, firewood billets and waste wood accounted for 45% of fuel consumption. For other users than the rural population, coal and coke consisted 25%, industrial waste wood 11% and billets 18% of the total consumption in 1938. After the war the use of coal and coke increased and the use of billets decreased.
Due to the decreased demand of billets, their price in the towns fell lower than the production and transport costs from the most remote areas where the wood was harvested. The demand for small sized timber is important for silvicultural reasons, and wood harvesting creates jobs for the rural population, therefore, the Committee proposes that the state supports the production of billets. This could be done by improving the effectiveness of firewood loggings, and by building truck roads and railways.
Small-sized birch is used predominantly as fuel. The Committee considers the growing stock of birch to be the largest unutilized wood reserve. Supported by technological research, it may become a new raw material for sulphate cellulose industry. Use of industrial waste wood as fuel and improvement of heating equipment would improve the competitiveness of fuelwood and peat against other fuels. For the possible interruptions in imports, stocks of foreign fuels should be maintained.
The article includes a summary in English.
The article is a review on state forests of Finland. The aim of the review is to describe the state and management of the state forests. Low revenue of the stat forests has been criticised, and misunderstandings have led to economic policy that has had negative impacts on state forestry.
The history of forest ownership of the state begins from 1400th century when Finland was part of Sweden. The article describes in detail the different stages in ownership of state forests and development of forest administration.
Forest Service was established in 1859. In 1949 it had two departments, a private forest department and a state forest department, and four local conservancies, Peräpohjola, Ostrobothnia, Western Finland and Eastern Finland. The forests were managed according to a business plan, which was based on a forest survey and a long term silvicultural working plan. The business plan gave a basis for annual working plans.
The state forests are mainly situated far from sites of forest industry and large human settlements. This affects demand and prices of wood. Especially demand of small diameter timber has been low. Floating is the main means of transport of the timber. The article describes in detail the forest resources of state forests, forest management practices and changes in state forestry. Suggestions to improve the profitability of state forestry are given. These include, for instance improving transport infrastructure and the productivity of forestry.
A vegetation survey was conducted in the Pisavaara national park in Northern Finland in 1946 and 1947. The national park (49,9 km2) includes southern half of the Pisavaara hills. The rock is quartzite. The most common vegetation type is dry upland forest type, but also fresh mineral soil sites are typical for the area.
The most common forest type, Empetrum-Myrtillus type coveres almost as much of the area as all the other forest types combined. The article describes in detail the vegetation of all forest types and gives a complete list of all plant species found in the survey. Total of 291 vascular plants was found, 242 of which were native to the area. In addition, 49 anthropochores had spread to the area when the forest ranger’s cottage was built. Number of species growing in the northern edge of their natural range is. Southern species can be found in the southern slopes of the hill.
The article includes an abstract in German.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation discusses cost-effectiveness of building forest lorry roads to expand the availability of timber in state forests, and gives examples of calculating costs of building a road.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation describes execution of land acquisition act that came into effect in 1945. The act gave principles of transfer of state forest land for settlement.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation describes application of labour legislation and occupational safety act in forest work.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation describes the principles of licence sales of timber in state forests. In this type of timber sales, a local forest officer has granted a licence for sale of wood or other wood products. The article gives a suggestion to improve the practices of the licence sales.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation describes budgeting of costs of delivery loggings, which have been at times underestimated in the practical forestry in the state forests.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation outlines the history of timber sales at delivered price made in state forests, and describes good practices to arrange timber harvesting locally.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation compares timber sales by delivered price and stumpage sale in the state forest. The buyers of wood have criticised sales bu delivered price from the state forests. The article discusses which of the type of sales is more profitable for the state.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation describes the forests and their silvicultural state in the areas of Perä-Pohjola and Lapland in the Northern Finland. Forest management work needed to improve the silvicultural state of the forests is suggested.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation outlines the state of state forests after the World War II. The area of the forests had decreased and the loggings to cover the needs of war years had influenced the silvicultural state of the forests. The article lists the forest management work that needs to be done in the state forests in the coming years.
Silva Fennica Issue 64 includes presentations held in the third professional development courses, arranged for foresters working in the public administration in 1947. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation introduces the aims and work of Foundation of Forest Tree Breeding, established in 1946.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica.
This presentation describes how the natural processes of forests and succession could be utilized in forest management and silviculture.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications than Silva Fennica issue 64.
This presentation discusses different ways of organizing felling cycle, forest management practices used in the forests of Finnish forest research institute, and how good practices developed in the institue could be applied in state forests.
Silva Fennica Issue 64 includes presentations held in 1947 in the third professional development courses, arranged for foresters working in the public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service. Two of the presentations were published in other publications.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Forest management and centralized loggings
Ecological forest management
Forest tree breeding
Forest management after loggings during the years of World War II
Forestry in Perä-Pohjola, North-East Finland, and Lapland
Aspects of sales at delivered price and stumpage sales made by Forest Service
Organizing delivery loggings locally
Estimation of costs of delivery loggings
Licence sales of timber in state forests
Application of labour legislation in forest work
Forest related issues of land acquisition act
Building of forest lorry roads
Planning of new national parks and nature reserves. The presentation is published as a report of nature conservation commission in the annals of the Finnish Association for Nature Conservation
Long distance transport of wood in the economy of districts. The presentation is included in the article Studies on factors influencing intensity of loggings published as Acta Forestalia Fennica vol. 55.
The article includes an abstract in German.
The government of Finland appointed a committee to study which method of selling wood, sale at delivered price or stumpage sale, is more profitable method for wood sales from state forests.
According to the committee, in normal conditions, when supply and demand determine the price of timber and forest work wages are dependent on the supply and demand of labour, returns from the sale at delivered price has proved more favourable than stumpage sale. During the World War II the case was, however, the opposite. Sale at delivered price can have also other advantages. The state has by means of logging a hold in the labour market and can use loggings, for instance, to ward off unemployment. Also, loggings can be more easily used in rational silviculture. They keep the supervising staff of forest districts employed throughout the year and provide better professional training for the foresters. In addition, the number of buyers from state forests has increased. The stumpage sale may, however, be good method in certain conditions. The committee states that the State forestry officials are best able to decide on the most favourable method of selling.
The article includes an abstract in English.
The article includes an index of articles published in the series Acta forestalia fennica, Silva fennica and Commentationes forestales by Society of Forestry in Finland (now Finnish Society of Forest Science). The index is divided into four parts, first of which contains a list of treatises, second contains authors and the publications of the authors, third is a systematic index, and fourth alphabetical index according to subject headings.
The article includes an abstract in English and in German.
The aim of this treatise is to describe forests owned by timber companies, their area and position, the quality of forests, the condition of the forests, and fellings carried out during the World War II.
Area of the company-owned forest was 1,95 million hectares, 1,64 million hectares of which was productive and 0,31 hectares inferior forest soil, not including the areas lost after the war. Most of the forests were situated in remote regions. Average volume of the tree stands was slightly larger than in farm-owned forests. Fellings counted for 84% of the growth of the forests.
During the war the state set felling quotas for both company, private and state forests. It was widely discussed how well they were met by the different owner groups. According to the statistics, the companies had followed relatively closely their cutting plans in peace years. Cuttings were highest in 1939, when the war begun. In the war years 1940-43, lack of workforce, horses and cars for transport complicated logging. The fellings increased again during truce after Winter War. Especially demand for small timber increased during the war. Felling of firewood increased in all the owner groups, in particular in the private forests that were situated near settlements. in general fellings were higher in forests that were easiest to reach.
During the war the companies acquired timber more from their own forests. The fellings from company forests were in war years 70% of those in peace years. The article concludes that companies fulfilled the requirements as well as it was possible in the circumstances.
The article includes an abstract in English.
The article is based on studies made in the Karelian isthmus in 1936-1938 before the World War II broke in 1939. Further studies were not possible after the war when the area was handed over to Soviet Union. Economic data of agriculture and forestry of the farms had mostly been regarded separately in the early economic studies of small farms in Finland. This survey aimed at studying influence of forestry in the economy of a small farm. 141 farms were included in a more detailed survey.
Forestry accounted for in average 38% of total income of the farms in 1937-1938. The farms had sold wood often, the amounts being often small. Good transport connections in the area facilitated the sales. Over 70% were sales at delivered price, and about half of the wood was small-sized timber. According to the results of the survey, forestry was important for the small farms in Karelian isthmus. The farmers could not have made a living without the forests. Hoveter, the farms had had to overuse the forest resources. The wood resources decreased by 18-22% in 1922-1938. They were, however, at the same level as in average in Finland in 1938.
The article includes an abstract in German.
Distribution of European white elm (Ulmus laevis Pallas) is on its northernmost border in Pyhäjärvi and Kokemäenjoki area. This survey describes distribution of European white elm in the flooded shores of the central lake of Pyhäjärvi and Kokemäenjoki river water system.
Both Ulmus laevis and U. montana (now U. Glabra Hudson) can be found in the area, but most of the elms qrowing in thea area are U. laevis. U. laevis occurs around the lake in two separate areas, almost entirely in flooded shores of the lake. Regeneration of elm from seeds was limited on a narrow belt on the higher part of the flooded shore. Consequently, U. laevis can be found as zones around the lake, created by the changes in water level of the lake. The trees are judged to be native for the area.
The article includes an abstract in German.
A committee was appointed in 1940 to prepare a proposal for reform of forest taxation. The taxation based on net income of forestry was considered to have limitations, and the actual net income had been observed to be markedly higher than the income that was used in taxation.
The report describes in detail the principles and shortcomings of taxation used since 1922. These include inaccuracies in the forest areas of a woodland estate, and weaknesses in classification of forest land and demand zones. The committee suggests several improvements in calculating the taxable income, which in the new calculations is based on yield on terms of value.
The article includes an abstract in German.
The Moscow Peace Treaty created a need to calculate values of large forest areas in Finland, such as the value of the private and state forests lost in the Second World War, or value of the remaining forests and the value of forests to be assigned to the evacuees. The article describes principles of evaluation of large forest areas. It concludes that use of felling value of the trees is the right method only if felling of the whole tree stand and sale of the wood is actually possible. If these prequisites cannot be fulfilled, the right method to evaluate the forest area is yield in terms of value. When calculating the yield in terms of value, also other incomes and costs related to fellings should be included.
The article includes an abstract in German.
The article is a proposal of a committee, appointed by the government of Finland, to expand the forest education of landowners, concerning use and management of forests. The proposal also outlines a program for a youth association dedicated to forests. The committee proposes that present organizations are used as a basis for the expanding education. The main forms of education suggested were education in public and agricultural colleges, education in forest colleges, forest clubs, forestry study groups and self-study, courses, excursions, exhibitions, competitions and rising of general awareness. Different age groups would be given education adapted to their needs.
The report includes statistics about rural population of Finland in 1938 and detailed description of how the education would be arranged in different parts of the country.
The article includes an abstract in German.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes different types of fellings in Norway spruce (Picea abies (L.) H. Karst.) forests in different forest site types. The use of thinning from below and above, clear cutting of Norway spruce stands, and thinning of mixed forests with birch (Betula sp.) are discussed.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes preparation and forest regeneration methods of a burned area.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses forest management practices of drained peatlands and the allocation of responsibilities in draining of peatlands between district forest officers and forest officers responsible of drainage work. Problems has occured in those cases, when the process of draining had lasted so long that at the time of final assessment of the project the first ditches have already needed maintenance.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses the development of road and path network in state lands in Finland. The speaker wants to stress the need for systematic expansion of the road network, which would serve several demands in forestry.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the conditions according to which the state can reclaim valuable timber-trees on forest land which ownership is transferred to landless population in settlement work.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the principles of bookkeeping and maintenance of forestry equipment, which reform was in progress in 1938.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the use and purpose of statistics about different felling methods compiled in Forest Service.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation presents guidelines for preparing an obligatory work program for a district of state forests.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses legal aspects of cases when property has been used without property rights. Examples related to forestry, hunting, fishing and reindeer husbandry are presented.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the reform of localized forest administration executed in 1923 and describes in detail forest management in the conservancy of Western Finland.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the state of forests in Northern Finland, and suggests that fellings are targeted at the oldest forests until the over-presented over-aged forest are harvested. The preferred regeneration method is natural regeneration in most forest types.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes a study of forest management practices suitable for in Hylocomnium-Myrtillus site type forests, typical for Northern Finland. A special problem for the forest site type is poor regeneration due weak seed production of Norway spruce (Picea abies L. Karst.) and thick moss layer.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the principles of charcoal burning in Finland at the time when charcoal had found a new market in ore processing.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes nature turism and recreation in Finland, how timber harvesting and nature conservation affect tourism and ways to adjust fellings to tourism.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the history of road transport of timber in Finland and discusses its significance and potential to forestry in the state forests.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the Timber Measurement Act, adopted in 1938, and its application.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes how need to conserve nature has been recognized in Finland, suggest ways how conservation of nature could be regarded in forest management and describes how it is regulated at present.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes growth and form of root systems of different tree species in different sites and how growth of roots affect forest management.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes different methods of assessing tree growth.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the principles of National Pensions Act, passed in 1937, and how it is applied in withholding of salary.
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation includes the salutatory of Mauno Pekkala for the courses.
Silva Fennica Issue 52 includes presentations held in the third professional development courses, arranged for foresters working in the public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Greetings by Mauno Pekkala
National Pensions Act and withholding of salary
Assessment of forest growth
Root systems of trees and forest management
Nature conservation
Timber measurement legislation
Car transportation of timber and its significance to forestry in state forests
Forestry and tourism
Charcoal burning
Experiences in forest management of Hylocomnium-Myrtillus site type forests
Forest regeneration in Perä-Pohjola in northern Finland
Forestry in the conservancy of Western Finland
The right to use property belonging to someone else
Preparation of a works program of a district
Statistics of felling methods
Bookkeeping and maintenance of equipment in forest administration
Reservation of valuable timber-trees in connection to settlement activities
Views on road and path network
Maintenance of drainage systems and forest management of forests in drained peatlands
Regeneration of burned areas
Forest management of Norway spruce forests
The article includes a German summary.
Due to constantly changing working sites often in remote places the working conditions of forest workers and log floaters have been inadequate. The article discusses the requirements of the act on the housing of forest workers and log floaters that came into force in 1928, and assesses how it affected the working conditions of the laborers.
The employers had positive attitude towards the new legislation and they had improved the housing conditions to match the requirements. Most complaints in the inspections of the working conditions were found in Eastern Finland. The shortages were considered to be mostly minor ones. Even if the act concerned only housing, it improved indirectly also nourishment in the working sites. Other factors affecting the working conditions were shelters for the draught horses, health care, and newspapers and other spare-time activities available for the workers.
The article includes a German summary.
Finland has a long tradition of grazing cattle in the forests and common land. There are also reports of degradation of forests by grazing already in 1600th century. The aim of the survey was to study which positive and negative effects grazing has in forests.
The study concludes that grazing has caused considerable economic losses through damages to forests. In addition, woodland pastures cannot give the yields required in modern animal husbandry. The quality of woodland pastures have decreased after the woodlands used in slash and burn culture have become wooded.
Grazing has also some positive effects to forests. It increases the diversity of vegetation in the woodland pastures and spreads species to new areas. This is supported by the lists of species found in different woodland pastures. Cattle destroy large grasses like Calamagrostis, which may avail growth of tree seedlings in the pastures. Grazing can also prepare the site for tree seedlings. On the other hand, prolonged grazing destroys tree seedlings and prevents regeneration.
The article includes a German summary.
An act passed by the government of Finland in 1922 prescribed that state-owned forest lands will be parcelled out to landless population. A survey was made in 1934-1935 by Forest Service (Metsähallitus) to investigate the success of the establishment of settlements, and which disadvantages it may have had in forestry in the state forests. In the survey 1,194 farms were inspected.
According to the directives of settlement, the farms should be able support a family of four adults. The area of arable land was in average 5-15 hectares. In addition, the farm should have pasture and forest enough to supply it most of the household timber. According to the study, the regulations had been applied variably. Usually the farms had been given more land than was required. It was estimated that farms had been given 110,000 hectares more forest land for gathering household timber than required in the act. Many farms had sold timber, in some cases to that extent it endangered supply of household timber.
Parcelling out land had affected the management of state forests. If a region had surrendered large forest areas for settlement, it could not follow its cutting plan. Also, there was relatively little state-owned forests in southern Finland, and the effects of parcelling out land were stronger. The report concludes that in general it was not appropriate to parcel out forest land. The execution of settlement should have beeb given to Forest Service.
The article includes a German summary.
The article is a treatise on use of aerial photography in forestry and its prodpective applications in Finland, based on the writers visit to Techniche Hohschule Dresden in Germany and experiences in his work in Forest Service.
Optimal conditions and principals of aerial photography are described. There is potential in use of aerial photography in Finland. The terrain is relatively flat, and large areas, especially in Lapland, are inadequately mapped. However, to fulfil the current requirements for forest maps, aerial photography should be carried out as aerial stereo photography at a sufficiently large scale. At a certain scale terrain survey becomes cheaper than aerial photography.
In forestry, aerial photography cannot substitute terrain survey, but it complements it. Aerial photographs could, for instance, form a photo archive of a region or be used as a basis for planning drainage of peatlands. In research, aerial stereo photography could become a new discipline.
The article has a German summary.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes production of forest tree seedlings.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes forest regeneration on poor forest sites.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes factors that should be taken into account in forest regeneration.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes how criminal law affects the use of forests.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes fish farming and management of fishing grounds.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes administration and state of wildlife management in the state forests of Finland.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes forest management in the state forests in the county of Eastern Finland.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes management of mixed forests.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes inspection of forest regeneration of mineral soil forest types and drained peatlands, and inspection of ditches.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes planning and organization of work in regional administration.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes clearing of felling areas.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes principles of thinning of forest stands.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation summarises the state of road network in districts of Forest Service, the costs of road construction and future needs of transport.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes execution of settlement in compliance to the Land Settlement Act in the state lands, and the role of a forest officer in managing the settlement.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes afforestation of drained peatlands.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the effect of properties of soil on forest regeneration.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes calculation of the annual financial performance of a forest district and a county.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses the means Finland has used to promote agriculture and forestry in the country.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation includes the greetings of Mauno Pekkala for the courses.
Silva Fennica Issue 46 includes presentations held in the third professional development courses, arranged for foresters working in the public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Greetings by Mauno Pekkala
Promotion of agriculture and forestry in Finland
Calculating the annual financial performance of a forest district and a county
Forest regeneration and soil
Afforestation of drained peatlands
Settlement in compliance to the Land Settlement Act in the state lands and role of a forest officer in management of the settlement work
Economy of a regional district and road network
Thinning of forest stands
Clearing of a felling area
Organization of regional administration
Inspection of forest regeneration of mineral soil forest types and drained peatlands, and inspection of ditches
Management of mixed forests
Forestry in the county of eastern Finland
Wildlife management
Fish farming and management of fishing grounds
Criminal law and forests
Factors to consider in forest regeneration
Forest regeneration in poor forest sites
Production of forest tree seedlings
The government of Finland appointed a commission to study how the work of forest owners’ associations could be promoted. In 1936 there was 232 forest owners’ associations in Finland. They had 20,632 members, who owned 1,841,304 hectares of forests. The owners of large forest holdings were overpresented among the members. The associations together with forestry boards were important actors in increasing the productivity of the private forests.
The commission concluded that rational forest management should be extended to all private forests, which could be best achieved through the forest owners’ associations. It suggested that the membership should remain voluntary, and that the financing of the associations would be arranged by self-taxation of the forest owners. The so called forest management tax should be devoted to the local forest owners’ associations. Also the state should continue to support the associations. Both state and the smallest forest holdings would be released from the forest management tax. The companies, estates and other large forest owners that employ their own forest management staff would pay a quarter of the tax. The tax could be based on the area of the forest, income of the timber sold or a combination of these. The commission suggested a forest management law, which would deal with the forest management tax and the forest owners’ associations.
The PDF includes a summary in Swedish and English.
The aim of the study was to follow development of vegetation in dry upland forest sites after forest fire. The sample sites were situated in the counties of Muonio, Kolari, Sodankylä, Pelkosenniemi, Savukoski, Kemijärvi and Salla, in the northernmost Finland.
The growth of plant communities can arise either from the vegetation and seeds that survived the fire, or from seeds that spread from the surrounding areas. The development of vegetation in the burned areas was unexpectedly independent of the surrounding areas, which indicates that role of the seeds from the outside of the burned ares is small. The occurence of different species of lichens, moss, scale moss and vascular plants in the burned areas are described in detail. The development of vegetation was strongly dependent on the forest site type. The thin humus layer of Cladina site type burns usually evenly, and also the vegetation develops more evenly than in the more fresh site types. Vegetation typical for burned areas was fully developed within 10-15 years, and after 25 years it began to resemble the vegetation of Cladina site type forests. The ground vegetation of Calluna type burned area was more patchy. It developed quicker than in Cladina type. Absense of lichens made it seem more fertile than is usual for Calluna type. The humus layer of Empetrum-Myrtillus site type burned unevenly, and if the area was lightly burned, the vegetation recovered quickly. The vegetation was often patchy.
The PDF includes a summary in German.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes forest management in state forests in Finland.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the personnel maintenance in forest work and floating.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation discusses unemployment in Finland, and means to solve the problem. One of the sources of employment could be forest work.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the effects of draining of peatlands on water management in the peatland and the surrounding area.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes how pruning is used to produce quality timber.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the principles of forest taxation in Finland in 1930s.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the revenue and expenditure of rural municipalities and the impact of forestry in their economy.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the principles of reneneration felling in Norway spruce (Picea abies (L.) H. Karst) stands.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes determination of stumpage prices in timber sales of the state forests in Finland.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the implementation of the Land Settlement Act on parcelling out land in the state-owned lands in Finland.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the productivity of forestry and administration in different districts of state forests in Finland, and how the efficiency of the administration could be improved.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the relationships between forestry and agriculture in the national economy of Finland.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the administration of rural municipalities in Finland.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes legislation concerning settlement policy in the state lands.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes national economy from the forestry point of view.
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation includes the greetings of professor A.K.Cajander for the courses.
Silva Fennica Issue 42 includes presentations held in the second professional development courses, arranged for foresters working in the public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Greetings of A.K. Cajander
Principles of economic policy
Main points of the new legislation concerning settlement policy and land settlement in the state forests
Administration in the rural municipalities
Interaction of forestry and agriculture in the national economy of Finland
Improving effectivity in the administration of state forests
Implementation of new legislation on parcelling out land in the state lands
Principles of determining stumpage prices
Regeneration fellings of Norway spruce stands
Revenue and expenditure of rural municipalities
Principles of forest taxation
Use of pruning to produce good-quality timber
Effects of forest drainage on water management
Unemployment problem
Personnell maintenance in forest work and floating
Forest management in state forests
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Practical forest inventory methods
Preparation of national budget in forestry administration
Peatlands’ suitability to draining
Statistics of wages in forest work and floating
Forest management planning
Parceling out new farms in state forests
Facilitating natural regeneration
Promoting self-sufficiency in food supply of the farms in the remote areas of Finland
Forest nurseries in Finland
Administration in the forest districts of Forest Service
Building and maintenance of roads
Practices of forest drainage work
Artificial regeneration of forests
Travelling guidelines and travel invoices in forest administration
Forestry statistics
Peatlands suitable for agriculture in state lands, and the factors affecting drainability of the peatlands
Planning of wood harvesting in Forest Service
Road units and right of way in village roads
Quality of coniferous forests and the value of timber
Use and accounting of funds of Metsähallitus (Forest Service)
Production of good quality timber
Planning and renovation of buildings
Observations on forest management work in state forestsThe issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the forest management work in the state forests.
The issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes building and renovation of wooden buildings, that were owned by the forest organizations.
The issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes methods of forest management that lead to production of qood quality timber, needed in the saw industry.
The issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the administration of funds and bookkeeping in Metsähallitus (Forest Service) in practical level.
The issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the quality of timber and coniferous forests in the point of view of saw industry.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the use and maintenance of village roads.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes how to make a document required in Metsähallitus (Forest Service) when a stand is marked for harvesting.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation discusses the use of peatlands in agriculture and peatlands' suitability to farming.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation lists statistics available on forestry.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes travelling guidlines in forest administration.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the methods of artificial regeneration of forests.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation gives guidelines for draining of peatlands.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation gives guidlines in building and maintaining roads in forest administration.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the administration in districts of Forest Service.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes cultivation of seedlings in forest nurseries.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation studies the food supply and economic situation of the farmers in the remote parts of Finland.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes natural regeneration in forests and factors affecting the success of regeneration.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes parcelling out of land for new farms in state forests.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes forest management planning in the state forests.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes statistics of wages in forest work and in floating.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes different kinds of peatlands and their suitability to draining and forestry.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the peparation of national budget in forestry administration.
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes different forest inventory methods.
Broadcast sowing on snow was relatively new method in the beginning of the 20th century in Finland, and the experiences of regeneration were diverse. The aim of the survey was to study the success rate of regeneration in the oldest and largest areas regenerated with this sowing method in Tuomarniemi district. Scots pine (Pinus sylvestris L.) was the most common tree species, but also Norway spruce (Picea abies (L.) H. Karst.) and European larch (Larix decidua Mill.) were used in broadcast sowing on snow.
According to the study, the success of broadcast sowing on snow was as good as patch sowing and sowing in furrows in the sites typical for Tuomarniemi. The regeneration areas were often drained peatlands or paludified lands. When sowing is done using Norway spruce seeds, site preparation either by broadcast burning or scalping with hoe is recommended. Mixed sowing with pine and spruce seldom succeeded due to the differences in site requirements of the species and growth of seedlings. Sowing of Scots pine succeeded well on the drained peatlands. Sowing should be done some years after draining to let the peat dry and sink. Site preparation is needed in sites growing Polytrichum-moss. Broadcast burned areas larger than 10 hectares seemed to regenerate poorer than sites in average, possibly due to dryness of the sites. Trials with European larch were successful, and the growth of the seedlings acceptable despite the sites being relatively poor for the species.
The PDF includes a summary in German.
The article is a description of the 75th anniversary of Finnish Forest Service (now Metsähallitus, Forest Service), held on April 19th 1934. The greetings of the quests, presented in the Commemoration festival and Banquet, are included in the article.
A review on the availability of forest work in the private forests in Finland was compiled on the request of the Unemployment Council. Private forests, and forests of municipalities and parishes covered 52.7% of the forest lands in Finland, according to the forest inventory made in 1922-1924. The proportion of private lands were estimated to increase in the future when state lands were parceled out to private land owners. Shifting cultivation, forest fires and selective fellings have influenced condition of the private forests. The interest to improve productivity of the forests has, however increased in 1920s and 1930s, which increases work opportunities.
The work opportunities in private forests is estimated to be 27.6 million man-days and 5.4 million horse-days annually. Wood harvesting and hauling are the main source of employment with 20.3 million man-days. The workforce is estimated to be 75,920 men and 16,200 horses, but more intensive forest management could increase the numbers to 91,900 and 18,100, respectively. To improve the condition of private forests, it should be obligatory to mark the trees for cutting before the fellings. One means to improve forest management would be cooperation between the forest owners.
The PDF includes a summary in German.
Labour legislation has developed strongly in a short time, and ways of its application have not yet been established. The article defines first the concept of forest worker from the point of view of the labour law. Collective agreement, contract of employment, wages, work instructions, and labour disputes concerning forest work are discussed. Finally, the author discourses the issues associated to occupational safety and health legislation, for instance, working hours, accident insurance and forest accommodation.
Forest work is typically seasonal, and it is payed for time or piece rates or by the job. The collective agreements have been difficult to apply in forest work, and more important have been the contract of employment. Labour disputes have been rare. The reported accidents in forest and floating work have increased since the Law on Accident Insurance entered into force in 1925. Compared to many other sectors, forest work has high risk for accidents.
The PDF includes a summary in German.
Metsähallitus (Forest Service) decided to protect two areas around Hiisijärvi lake in Eastern Finland already in 1916. Later, a natural park was suggested to be established in the area. A survey of the vegetation in the area was composed in 1931-1932. The total land area of the protected area was 3.5 km3. A vegetation map was drawn based on a nature inventory. A detailed description of the forest site types, peatland types, aquatic flora and the vegetation of the area are included in the article. The calcareous soil promotes rich vegetation. Typical for the area are also rich fens. The area can be divided to a eutrophic and a oligotrophic part.
The PDF includes a summary in German.
A Committee was appointed in 1931 to prepare a program to improve the trade of small timber and to develop Finnish fuels and their production. The low demand for small timber is caused by the reduced export of Egyptian balks, and decreased demand of fuel wood that have been replaced by the imported fuels, like coal. At the same time, the supply of small timber has grown significantly due to increased thinnings, and better transport facilities that have made timber more accessible. Also, decreasing demand of large timber has increased the supply of small timber. The demand of small timber concentrates on Norway spruce (Picea abies (L.) H. Karst.). The sales of small timber are crucial from the silvicultural point of view. Selection felling of large timber in the past has reduced the supply of logs and led to surplus of small timber.
The article discusses the uses of small timber and potential new fields, such as wood sugar as fodder or refining wood as fuel. The use of timber should be promoted especially in the domestic industry. The Committee suggests funding for an additional forestry teaching post in the University of Technology, for forest technology and forest economics research in the Forest Research Institute, for research in wood technics, and for follow-up of forest sugar and wood gas fields.
The PDF includes a summary in English.
As the use and value of forests have increased, forests have been managed more as a business. Financial bookkeeping defines the production costs of wood, costs of forest management work, investments in forest improvement, taxes and administrative costs, income from the sales of forest products etc. Bookkeeping reports the annual costs and income in the forestry, but does not give information of the future profits or appropriate organization of the economy of forestry.
The author introduces a system that he calls “metsänhoitoteknillinen tarkkailu” (silvicultural monitoring), which would give economic information of the forestry, and could also replace a forest management plan in the private forests. The bookkeeping system will list in detail the volumes and areas of fellings and silvicultural measures in different years, and deduce the sustainability of the use of forests and future incomes in forestry.
The PDF includes a summary in German.
The earliest local records of lack of timber in Finland are from the 1600th century when Finland belonged to Sweden. The causes vary from burning of tar and shifting cultivation to local factories using fuel wood. Best preserved were forests in Lapland and Kainuu in Northern Finland and those parts of Karelia where shifting cultivation was not practiced. Especially harmful was shifting cultivation, because it made it impossible to grow valuable timber. The state did not intervene in the use of forests until it itself began to need more wood. Shipbuilding was the first cause to limit the use of wood, especially need of mast trees of pine and oak. Also the use of timber by private sawmills began to raise general concern in the 16th century. They influenced the decrease of forests in the 1800th century, due to the limited wood procurement areas and selection felling of timber trees. The establishment of sawmills became regulated in 1700th century. Collective forest ownership by the farms was seen at the time one of the reasons to forest devastation. In 1654 the state of Sweden forbade the burning of mast or in timber forests. Mining industry needed much fuel wood, and shifting cultivation was forbidden near the mines in 1734. Regulations and instructions were also on given on use of wood, for instance, in building, in fences, leaf fodder, fuel wood and tar burning.
Despite of many efforts, the government of Sweden could not prevent devastation of forests in Finland. The many wars of the state hindered economic growth, the regulations were sporadic and often difficult to apply, there was little supervision, the understanding of forestry was poor, and the remote Finland was often neglected in Sweden.
The PDF includes a summary in German.The article is an obituary of Dr. Lauri Ilvessalo, who died in 1928. He worked as a professor of silviculture in 1918-24, and published numerous scientific articles on silviculture. The article includes his presentations on the state of forestry in Finland, and on the establishment of Forest Service in Finland and the public attitude towards the organization.
The PDF includes a summary in German.
The Agricultural University Committee recommended in its first report that the higher education in agriculture and forestry should be transferred to Helsinki, the capital of Finland. The same arguments that were presented on the education of agriculture and forestry can be applied to education of agricultural engineers, surveyors and veterinaries.
According to the proposal of the Committee, the Government reserved in 1931 buildings in Wiik and Malmgård estates for the education of agriculture and forestry. Thus, the higher education of agriculture and forestry have been appointed training areas near Helsinki, where also the education of agricultural engineers, surveyors and veterinaries could be located.
Connections to the University of Helsinki has proven invaluable to the development of higher education of agriculture and forestry. However, the Committee recommends the establishment of separate agricultural university for the sectors, because the other faculties support the separation of the faculty from the university. It seems to the Committee that education in agriculture and forestry no longer poses sufficient opportunities of development within the University of Helsinki. The education in veterinary science should remain in connection to education in agriculture. The education of surveyors and agricultural engineers are at present arranged partly at the Technical University, and their location remains to be decided. A proposal for the organization, staff, education, decrees and professors is included in the article.
The PDF includes a summary in English.
The forest pathology research has gradually been focused more to avail silcviculture. Forest pathology has contacts to other fields in forest sciences, and can deepen the knowledge of forest management practices. The studies on specific fungal diseases are beneficial to the forestry. Special focus should be put to statistical forest pathology research. In addition, the monitoring of large-scale damages would give new perspective to forest pathology. It should also be compared how fungal diseases differ in managed forests and forests in natural state, and how silviculture can be used to promote the healing of forests.
The PDF includes a summary in German.
A forest damage was detected in spring 1931 near electro-chemical factory in Imatra in Eastern Finland. It was deduced that it was caused by a gas discharge from the factory. A survey was made to describe the damages. Forests in the damaged area of five hectares were Scots pine (Pinus sylvestris L.) dominated and 60-80 years old. According to the factory, the exhaust gases contained 0.4 mg chlorine per liter. In addition, chlorate containing liquids evaporated thorough the chimney, which seemed to have been the main cause of the damage. The chlorates may have concentrated in the snow covering the trees during the winter. The Scots pine trees had lost all the needles in spring, but grew new needles in the summer. In some trees the new needles were few or undeveloped. Some mild damages were noticed in pine and Betula sp. during the growing season. Forest edges and trees higher that the other trees were worst damaged. Pine was most sensitive to the emission. Pine weakened by the gas damages were attacked by insects, the most important being Pissodes sp. The secondary insect damage is likely to kill the surviving trees. The dying pines should be removed only if it is necessary to prevent the spreading of insect damage. The trees may hinder the spreading of further gas emissions. In future, other tree species should be preferred over pine.
The PDF includes a summary in German.
The article is a review on early forest regeneration and management in Finland. Beginning of the 1900s marks change in attitudes and resources for forest management. The state increased the funding of forest regeneration and improvement in the state forests in 1928. State funding is directed also to forest improvement in the private forests, and organizations established to promote forest management in the private forests are reorganized. For instance, District Forestry Boards were appointed the forest improvement work in private lands, in addition to promotion of private forestry. Sowing increased in the state forests from 772 ha to 1,566 ha, in forests of the forest companies from 3,006 ha to 4,954, and in private forests from 1,417 ha to 1,566 ha in 1923-1926. The figures of private forests are, however, incomplete. The most usual methods are patch sowing and broadcast sowing on snow. Seeds used in sowing increased from 3,357 kg to 14,387 kg, and planting from 413 ha to 1,020 ha in 1923-1930. Almost half of the sown areas were in the state forests, and most of the planted area in the forests of the companies. Scots pine (Pinus sylvestris L.) was the main tree species in artificial regeneration, and Norway spruce (Picea abies (L.) H. Karst.) was more popular in planting.
The PDF includes a summary in German.
Applied research in the fields of agriculture and forestry is as demanding as theoretical research. The perception that it could be less exact is incorrect. Different variables have to be accounted for, for instance in cultivation of cereals. To define the effect of one variable, the scientist has to know and take account of the combined effect of the all the variables influencing the growth of the species. Results that can be put into practice are often demanded quickly, and the they should be broadly applicable. The research and education in the fields of agriculture and forestry have to respond to domestic needs. It is therefore necessary to secure that the research has sufficient equipment and premises.
The higher education and research of agriculture and forestry should be organized in the capital of the country, where the main organizations of the field are located. The present buildings of the faculty are, however, not adequate for teaching and research. The applied sciences need also connections to practice. Forest education has a forest experimental area, but agricultural education has no experimental fields in its use. The best location would be in Wiik area near the capital Helsinki. In addition, the teaching staff in the faculty is insufficient. New professorships should be established both in agriculture and forestry.
The PDF includes a summary in German.
The article is a proposal for organizing higher education on agriculture and forestry in Finland. The committee assessed that the best location for both forestry and agriculture education is the capital of Helsinki, where are situated the University of Helsinki, the College of Technology, the College of Commerce, most scientific institutions of the country, and the central government departments. Because the degree programs cannot be extended to include all the subjects of the developing fields of agriculture and forestry, it is suggested that the studies of agriculture will have four, and the studies of forestry three disciplines. The students would specialize in one main subject. The faculty should be divided into agricultural science and forest science sections.
The present teaching staff is considered insufficient. Thus, the committee proposes several new posts of professors, lecturers and teachers. Another problem is shortage of suitable premises. Therefore, new buildings should be constructed for the education of agriculture and forestry, and the Forest Research Institute. Agricultural experimental estates are proposed to be established in the Wiik estate and in the Malmgård estate. Accordingly, forest experimental station would be established at Korkeakoski. To enable the education of scientifically schooled personnel, grants should be provided for both studies abroad and for scientific work in Finland.
The PDF includes a summary in English.
The Jokioinen Estate was established in 1562 when king Erik XIV of Sweden granted a large area around Jokioinen in the southwest Finland to Klas Kristersson Horn. The estate had several landlords until it was acquired in 1872 by Jokkis Stock Company, and finally sold to the government in 1918. The forestry of the estate was influenced by complications concerning the ownership of the land. A part of the tenants of the estate had originally been independent and owned their farms, but some farms were so-called family-right-farms, which were inherited from father to son, but the farmer did not own the land. A third type of farmers were ordinary tenants, who were directly dependent on the landlord. Especially ambiguous was the family-right-farmers’ right to harvest timber from the forests. The Finnish government acquired the estate to solve the problems and gave the tenants right to buy their farms.
Until the 18th century most of the farmers in Jokioinen area practiced shifting cultivation. This method of farming influenced strongly the forests, and continued until the increased market price of timber made it unprofitable. The forests were also the source of fuel wood for both the farmers and the landlord. The estate had own saw-mill industry since the 18th century. In 1871 a trained forester was hired for the estate. When the government acquired the estate, it comprised 32,000 hectares of land. The state retained 7,000 hectares of the forests. They were managed by a trained forester and administrated under the Board of Agriculture.
The PDF includes a summary in English.
The article gives a review on the history of forest management in the Northern countries. The article concludes that in the Northern Countries with their immense supplies of forest and small demand, because of sparse population, there was no hurry for developing the study of forest economics, as was the case in Central Europe. It was only when the modern wood using industry had revolutionized the marketing conditions, that the opportunity was provided for forest economics to develop. The paper introduces the book ’Om skogarnas skötsel in Norden’ (Silviculture in the Northern Countries) written by a Finn C.C. Böcker. That paper was compiled in behalf of a request of the king of Sweden, King Carl XIV Johan, who offered a price to a person who would draw a scheme for organizing forestry in Sweden, where Finland at that time belonged to. The prize was divided by Böcker and a swede, af Ström.
The PDF includes a summary in Finnish and English and the original text in Swedish.
The article is a joint study of the Forest Research Institute, the Forest Association and the Society of Forestry (now Finnish Society of Forest Science) on means to increase the productivity of forestry in Finland.
The study identifies five ways to improve the productivity of forestry in the country. First, the yield of forests should be increased by draining peatlands, reforestating understocked forests, changing tree species, if they are unsuitable for the site, increasing improvement fellings and enhancing regeneration in the cutting areas. Second, the utilization and trade of small-diameter timber should be developed. Third, export of wood should be promoted, while the use of wood as fuel instead of imported fuels should be increased. Fourth, the export of Finnish wood products should be secured, for instance, by reducing manufacturing costs and developing production methods in the industry. Fifth, both the elementary and higher education of forestry should be developed further.
The PDF includes a summary in English.
Systematic draining of peatlands begun in the state forests of Finland in 1908. It was considered necessary, because 41.4% of the state forests, 5.6 million hectares, consist of peatlands. Of the peatlands, 1.9 million hectares was estimated to be suitable for draining. Furthermore, paludification still continues in the forest lands. By the year 1926, a total of 52,275 hectares of peatland had been drained in the state lands.
Certain factors decide whether the peatland is suitable for draining: the growth increment capacity after draining, technical difficulties in draining, and difficulties in regeneration. Peatland type indicates the growth capacity of the drained peatland. The peatland should turn at least to Vaccinum forest site type or better type to be worth of draining. If the peat layer is thin, the quality of peat is an important deciding factor. The peatland may also be too expensive to drain due to, for instance, long ditches, main ditches difficult to dig, small inclination, uneven surface, and deep cavities at the bottom. The younger the trees of the stand, the faster the growth of the stand revives. The peatlands usually regenerate naturally provided there is sufficient seed trees, and there is seldom need for artificial regeneration.
The PDF includes a summary in English.
National research has important role in creating the basis of forestry in Finland. The Forest Research Institute was established in 1918. In 1927 it had three departments: Department of Silviculture, Department of Forest Mensuration and Valuation and Department of Forest Soils. Each department had one professor and an assistant. Several areas of research are proposed to be expanded, and three new departments are suggested: Department of Swamp Investigation, Department of Forest Utilization and Department of Forest Economics. In addition, research workers should be hired in forest zoology and forest pathology.
The Society of Forestry (now: The Finnish Society of Forest Science) was established in 1909 to promote research in forest and wood science in Finland. It publishes two science journals, holds meetings and gives out grants for research. The society receives an annual state subsidy of 100,000 Finnish marks, which is almost entirely used to cover the costs of maintaining the society's publishing activities. Thus, very small means have been available, for instance, for grants for research work. The annual subsidy should be increased to 225,000 Finnish marks.
The PDF includes a summary in English.
The article proposes a plan to improve the efficiency of forest management in the state forests in Finland. The forests are situated mostly in Northern Finland. In 1926 the state forests covered 39.5% of the total land-area of the country, 13,580,611 hectares in total. A proportion of 52.3% of the land was productive forest land, 21.4% forest land of poor growth and 24.8% waste land. Scots pine (Pinus sylvestris L.). predominated 56.9%, Norway spruce (Picea abies (L.) H. Karst.) 30.5% and Betula sp. 11.9% of the productive forest land. The fellings have mainly been selective fellings of sawn timber, because the demand for small timber was small. Due to this, there is lack of seedling and young stands. Metsähallitus (Forest Service) has been able to increase the sales of small timber by increasing delivery loggings over standing sales. The net profit of state forestry was 136 million marks in 1929.
Several factors have had negative impact on profitability of state forestry: Major part of the forests are situated in Northern Finland, they are of poorer quality than the private forests, and they are located unfavorable in terms of wood demand. The means to improve financial result of state forest include expanding transport network, such as railroads and floating channels. The yield of the forests can be substantially increased by draining peatlands, improving the effectivity of forest management and increasing the proportion of delivery loggings. Changing the silvicultural practices alone is estimated to increase the productivity of the forests by 50–100%. However, the costs of the peatland draining and silvicultural work are high, and direct profits can’t be expected until later.
The PDF includes a summary in English.
A temporary organization for forest service was established in 1851 for the State forests of Finland. It was made permanent in 1859, and a central board, chief forest supervisors, forest supervisors and forest guards were appointed for the state forests. The Forest Research Institute, established in 1917, was subordinated to the Board of Forestry. In addition, the higher forest education was subordinated to Board of Forestry until it was moved to the University of Helsinki in 1908.
In 1921 the administration was reorganized to meet the requirements of developing forestry in the state forests. The Forest Service was divided into two sections: The State Forest Section and the Private Forest Section. The first consists of four divisions and the latter two. The forests under the supervision of the State Forest Section are divided into four districts, and each of these into two or three inspection territories. Under the supervision of the Private Forest Section are the forest schools, the Forest Research Institute, and the forest officials working for the ecclesiastical forests and Provincial Forest Committees. The Forest Research Institute is only nominally subordinated to the Private Forest Section of the Board of Forestry. It has 17 experimental areas in various parts of the country. These areas have been separated from the supervisor-areas of the state forests.
The PDF includes a summary in Finnish.
Metsähallitus (Forest Service) commissioned a study about condition of forests on the coast of Gulf of Finland in the Karelian Isthmus. The study was made because of a growing concern on overcutting of the private forests in the area. Dominant tree species in the area is Scots pine (Pinus sylvestris L.). In fresh mineral soil sites Norway spruce (Picea abies (L.) H. Karst.) grows in mixed forest with pine or as pure stands. The forests are in average 50 to 70 years old. Younger or older stands are less frequent.
At the beginning of 18th century the local peasants sold plots for Russians, and a villa area was created along the coast. When Finland became independent, many of the properties changed owners. Timber harvesting of the forests increased and many small sawmills increased the demand of wood. Because of the cuttings, productivity of the forests decreases and danger for wind damage in the forests increases.
The author suggests that legislation created to prevent deforestation as well as counselling should be applied to improve forest management. In addition, a protective area should be formed in the Karelian Isthmus where forest preserving directives should be followed.
A summary in German is included in the PDF.
The purpose of this study is to reveal the links between farm forestry and its economic and social environment. The second-stage factor analysis used was based on factor scores per municipality, representing the dimensions of total farm operation and of its economic and social environment. The population was 17 municipalities or groups of municipalities in the South Karelian Forest Board district.
The conclusions of the results are directly applicable only to the ideal types presented. A socio-economic environment marked by industrialization detrimentally affects both the standard of forest management, as assessed subjectively by field workers, and the productivity of logging, as measured by labour input/m3 of output. This finding holds good even despite the modernization of forest management indicated by the adoption of renewal cuts.
The clearest negative factor for forestry is the irrational distribution of forest holdings. This impedes the rationalization of forest management and the efficiency of loggings. Extensive scattering of forest holdings also delays the mechanization of logging. The spread effects of industrialization relate to a higher level of forest management and labour productivity of logging. Family farming links up closest with features that enhance the importance of the forest to the farmer. Such features include regularity and size of delivery cuts.
Centralized agriculture, mainly village settlement areas, displayed the poorest forest management. Problem farms are typified by small farm units, unemployment and a low degree of forest management.
The PDF includes a summary in English.
The study links up with the general development of logging on private farm woodlots, practiced by the Work Efficiency Institute (Työtehoseura). It is based on the idea that the promotion of forest management on farms should be integrated with general agricultural development. The aim of the study was to find out the relation between delivery cuts and management of the farm as a whole, including economic and social environment. The first, methodological part develops a model representing farming, based on factor analysis. The second part tests the applicability of the factor analysis in the light of the empirical data, and studies the relation between delivery cuts and total farming and regional differences in farming.
Despite the descriptive nature of the factors obtained, the solution permitted a multi-dimensional examination. It seems that certain aspects typical to scattered settlement accentuate the importance of the forest for the farm. These include a high ratio of forest to arable land, barren soil and forest holdings that form unbroken tract of land. The importance of forestry is accentuated by the self-sufficiency of farms in labour and tractive power. On the other hand, there were lines of production and forms of livelihood and land utilization that compete with forestry, such as off-farm employment and alternative forms of land-use. One factor indicative for small importance of forestry for the farms was the small size in ratio to arable land. Often money for machinery has come from forest revenues.
The factor analysis indicate that a rational parcelling of forest holdings leads to better cutting methods. Also, cutting method improve and the proportion of renewal cuttings increase on moving from remote areas towards population centers. Productivity of delivery cuts is affected by the total employment of labour and tractive power on the farm. Abundance of labour and the use of farm’s own labour are probably detrimental to the productivity of delivery cuts. When the farms grow, the increase in the quantity felled and the rise in the degree of mechanization favour productivity.
The PDF includes a summary in English.
Farm forestry in northern Ostrobothnia has met different kinds of obstacles that decrease its profitability, some national, some local. One of the later is partitioning of land. The purpose of this investigation was to survey the division of farm land in the coastal municipalities of northern Ostrobothnia in Finland, where the conditions are among the most unfavourable in the country in this respect. The material used in the investigation was collected in a previous study about the structure of the farms in the area. First part of the paper summarises the history of partitioning of land in Finland.
The results show that division of the woodlots of a farm are in the coastal municipalities of northern Ostrobothnia very disadvantageous for forestry. The average distance of a woodlot to the farmhouse is 8.3 km, but there is a great variation between the municipalities, and the distance varies from 30 to 1.9 km. The form of the lots, as the long ribbon-like woodlots in the municipality of Liminka, complicates often practical forestry. In addition, the number of separate woodlots is high, in average 9.2 per farm.
The great distance of the woodlots from the main farms hinders the use of forests and diminishes the financial result of forestry. Unfavourable form of the woodlots posts similar hindrances to harvesting of timber and forest management as the long distances and high number of separate plots. The problem is heightened by the abundance of peatlands in relation to productive forest lands in the area.
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Examination of stands developed under natural conditions can be used to provide basis for comparison for study of the development and yield of stands treated with intermediate fellings. In Finland, the first investigation and the yield and the structure of natural normal stands were published in 1920. This investigation on development and yield of the natural forests of Kainuu in southeastern Northern Finland is based on 92 sample plots on three forest types; Empetrum-Vaccinium type (EVT), Empetrum-Calluna type (ECT) and Vaccinium-Myrtillus type (VMT).
The Scots pine (Pinus sylvestris L.) sample plots represented variation of age classes for construction of mean development series. The Norway spruce (Picea abies (L.) H. Karst.) of the region are so old that development series could be obtained only for dominant trees based on stem analysis.
The average development of Scots pine stand on EMT type within the region is on average more rapid and the yield in cubic volume quantitatively larger and structurally better than that on ECT type. Self-thinning during the early decades of EVT is slower. The pine stands are denser in the age of 70 in Kainuu compared to Central Northern Finland, but the development and yield are similar.
The development, yield and structure of natural Norway spruce stand on VMT proved considerably inferior to the average level of pine stands on EVT, and to a major part on ECT. The mixed pines on spruce sample plots have developed better than spruces of equal age. Spruce stands on VMT in the area developed markedly better than Geranium-Dryopteris-Myrtillus (GDMT) in Central Northern Finland.
It seems that a spruce stand seems to require more fertile site type in north than in the southern part of Finland. These fertile types are relative rare in the north. In the region, the best results are received with pine. As a rule, also the yield of birch (Betula sp.) is poor in the region.
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The aim of the investigation was to obtain by snow and soil frost observations sufficient material for determination of regional springtime snow and soil frost values, because the water equivalent of snow and the frost depth affect runoff. The present paper elaborates a method by which the observations along a survey line can be corrected to be valid for a basin. Along the line 50 measurement points were arranged at specific intervals. Snow depth was recorded at each point, and snow density and frost depth at every fifth point. The terrain was studied along the line and the terrain of the survey points were classified in eight classes depending on the vegetation. The classes ranged from cultivated lands and open bogs to wooded areas according to volume of the growing stock and tree species composition.
The mean snow depth was 51.9 cm and mean snow density 0.235 g/m2. Water equivalent of snow in class 4 terrain (forest with small growing stock) was 30% higher than in class 8 (forest with high growing stock). An ample stand increases evaporation in wintertime. The difference can be partly caused by the different accumulation of snow in the different types of stands.
Soil type was not found to have any distinct influence on the frost depth in the present material. On cultivated lands the soil frost clearly penetrates to greater depth than in the forest. The growing stock of wooded areas influences the snow depth
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Seed storing experiments with cones of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) were conducted in Oitti seed extracting plant in Southern Finland from February to December 1955. The pine cones were stores for 267 and the spruce coned for 304 days. In four of the storage methods the cones were packed in sacks and another four in wooden boxes. Sample of cones were taken once a month, seeds were extracted and the germinative capacity was tested. The remaining extracted seeds were placed in storage, and in January 1956 moved to cold seed cellar until 1962, when the viability of the seeds was tested.
According to the results, cleaned pine cones can be stores for at least nine months using almost all methods of storage which are commonly used at our seed traction plants, without hazarding the usability of the seeds. The seeds in spruce cones, however, seemed to be more sensitive to conditions during the storage. The germinative capacity of the spruce seeds began to decrease after the beginning of May. Later the seeds were infected with mould, which increased towards the end of the experiment.
Thus, preservation of the germinative capacity of the seeds of pine and spruce requires storage in different conditions. The results suggest that extraction of spruce seeds should be finished during the cold winter months. It seems that seed in the cones of pine and spruce endure storage in piles of paper or cloth sacks at least as well as in wooden boxes. Occasional warming of the storage, snow and foreign material among the cones and an over meter thick cone layer decreased the germinative capacity of spruce seeds during spring and summer. Spruce seeds that had been extracted immediately after collecting of the cones preserved their germinative capacity well during an eight years storage period.
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The purpose of this theoretical study was to define the factors related to wood production that affect the financial result of private forestry in Finland on the viewpoint of alternative calculation. The paper introduces the main concepts, analyses the outturn factors and discusses feasibility of some calculation methods, and finally draws up a business plan for a forest holding based on the chosen method.
In forestry, the quantitative and sustainability objectives for yield, the difference between annual proceeds and costs, and the capital value of the costs affect which factors are included in the calculation of profitability of forestry. The base-line situation for the alternative calculations is defined by an inventory. The future proceeds and costs are valuated and procedural models are formulated for the most advantageous alternatives. The main goal in private forestry is profit.
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The forest management practices in Finland are closely related to the industrial history in the country. The selection cutting method used previously has now been gradually disappearing, and differences in the quality of forest management can still be observed between different owner groups. The national forest inventories indicate that farm woodlots show the poorest silvicultural state among the ownership categories. This study analyses social and economic causes responsible for variation in the silvicultural state of farm woodlots managed jointly with a cultivated land holding. The study is based on the data of third national forest inventory in Finland, and a factor analysis was calculated using the data.
Although the model developed explains more than a half of the total variance of the level of silviculture, only less than third of this is clearly explained by economic and social factors. The remaining two thirds are explained by the ’nature factor’, which includes both economic and site factors. This affects the effect of different kinds of forest policy measures. Of the variables in the model, the strongest influence in the level of silviculture have income, size of woodlot, size of land area under cultivation and distribution of forest types. The differences in the level of silviculture between different woodlots and different districts, may be explained by the theory of cumulative process. Regional differences in economic phenomena cannot be explained without taking into consideration the social value hierarchy in each region, which determines the range of variation of economic variables.
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Two lines can be defined in the management planning for the State Forests of Finland: 1) general planning for regions and inspectional sub-regions based on forest inventory, and 2) management plans for individual districts based on the revision of each district after 10–15 years. Long-term planning is has recently been alleviated by several new methods, such as stock-development forecast and yield tables.
A stock-development forecast and cutting budget were prepared separately for each State Forest region. The present growing stock was based on the data collected in the inventory in 1951–1955. Desirable stock for each region was calculated. The methods to calculate total cut during near future, allowable cut, allowable cut by timber products, the long-term development of the allowable cut, and conditions for realizing the allowable cut are presented in the paper.
The development of the growing stock towards a desirable condition requires also realization of a silvicultural program. Because the Finnish forest industry is expanding vigorously, the amount of the allowable cut on a sustained basis must be estimated carefully. Otherwise the demand for wood may exceed the supply. Though there are many sources of error in preparing a long-term cutting budget, it was considered necessary for State Forestry. An approximate estimate of the largest cut on a sustained basis and a program of silvicultural measures necessary to increase the yield gradually has been worked out.
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The annual fellings and sales of pulpwood from the State Forests of Finland comprised 4.0–4.6 million m3 in 1955–1959. In order to improve the accuracy of the methods used in estimating the pulpwood stocks marked for felling, a pilot survey of 18 marked stocks was carried out in 1959. The stock area, average plot volume, variation of the plot volumes, size and shape of the plot and the distribution of the trees by diameter classes as factors affecting the precision have been studied in this paper.
The greater the mean volume of a plot the more homogenous is the structure of the marked stock. The same number of plots gives a better relative precision for the south Finnish marked stock than for the north Finnish ones, which are heterogenous and less valuable. Stocks smaller than 50 ha can often be estimated more advantageously by the strip method or visually than by the plot method. The proper size of plot in Southern Finland is 0.02–0.03 ha. In Northern Finland the plots should be larger due to the heterogenous stocks, about 0.05 ha. The shape can be either circular or rectangular. The former may be more practical and reliable in the field. The minimum number of sample trees is considered to be about 200 per 100 sample plots 0.03 ha in size.
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The purpose of the investigation was to study the characteristics of the site and the growing stock and the effect of their variation on the precision of forest inventory. The total area of the forest tract is considered to be already known or it can be measured with surveying. The sub-areas or strata and the mean timber volume of each wooded stratum are estimated by sampling. Thus, the total volume of each stratum is the product of the estimates of the area and mean volume. Only line method of sampling the areas will be examined. Field material was measured in the inventory of the Finnish State Forests with the method used in the third National Forest Inventory. The circular plots and the sample trees were measured in the forests of Inari district. In this systematic line-plot method the distance between the lines was 5 km.
The results show that the total area should be broken down into suitable strata, such as the full-stocked productive forest land and regeneration areas with mother trees. The mean volume for each stratum is estimated with the plot method. An advanced estimation of the approximate mean volume and the coefficient of variation in the strata are needed for calculating the optimum allocation of plots.
If the volume calculation is done with the diameter as variable the variation of the plot volumes is decreased. If the local volume table is used and the site and stock characteristics differ from the characteristics of the volume table stock, a significant systematic error is possible. Planning of efficient and economical forest inventories requires data concerning site and stock variation. It should be calculated and published systematically by geographical region.
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The Finnish forest industry is undergoing a vast expansion, which has raised questions of forest balance. This paper studies the possibilities to increase the amount available timber by means of forest drainage. About third of the Finnish land area is peatlands. The calculations of the investigation are based on Forestry Board districts. Based on earlier studies, there is estimated to be 3,042,000 ha of true drainable swamps, 973,000 ha of poor swamps, 1,381,000 ha of uplands in need of drainage, and 1,205,000 ha of drained peatlands. Therefore, the area of drainable and drained lands totals 6,6 million ha, and requirement of forest drainage 5,4 million ha. The drainage hardly reaches this extent, however. It can be assumed that part of the poor swamps is uneconomical to drain. In addition, a half of the paludified forest land will probably not be drained. Thus, it can be estimated that the area to be drained in the future is about 5 million ha. It seems possible that this area could be drained within about 50 years with the present draining capacity.
Draining of all objects of forests would increase the annual increment of our forests, in time, by about 10.5 million m3. This would signify an increase of 23% compared to the present growth of the forests. The increase in the growth consists mainly of softwood: 16% is birch, and the remaining 84% almost equally of Scots pine and Norway spruce. The increase of growth is relatively slow. Depending on the rate of the drainage program, the mean increase of growth will be reached in about 25–35 years. The increase in removal indicated by the increase in the mean increment will be reached in only 50–60 years.
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It is impossible to survey the results and profitability of forestry a hundred years hence of measures taken today. Financial reports in forestry should be kept as separate as possible from stocktaking. Under sustained forest management it is the task of silviculture to supervise the care of growing stock. As long a sufficient money is being used for forest improvement, the situation can be considered satisfactory. To ascertain just what is sufficient, in the analysis of the costs of forestry the investigators should concentrate on establishing which costs are fixed and which are direct (marginal).
Short-time changes of capital can also best be considered by means of a cost analysis of silvicultural measures and other operations. On the other hand, classification of the cost must be correct if the operational statistics are to be of any value. The calculations become much easier if fixed costs do not need to be distributed per production unit. Therefore, there may be good reason to try out marginal costing in forest enterprises. The fixed costs are increasing steadily.
This paper aims at giving ideas in determining the profitability of a forest enterprise. A marginal costing balance sheet mainly illustrates the structure of an enterprise, which gives a general picture of its profitability. If profitability is to be expressed by comparing yield with capital, yield can be treated as interest and capitalized. None the less, this is certain to result in different capital values depending on whether we take the yield to represent 3, 4, or 5% of the capital. A marginal balance is no substitute for the long-term planning which will be needed in a forest enterprise.
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The purpose of the investigation was to study the factors which determine the amount of the largest permanent allowable cut and to work out a method to estimate it. There is a need to have a ’short cut’ formula for rough preliminary estimates. The preliminary estimates will be checked by stock development forecasts. The largest allowable cut and its sustained basis are only guaranteed by a forecast through a period during which all the present tree stands have reached maturity and exploited.
Estimations of the largest permanent allowable cut are based on the data of the present and desirable growing stock. The present stock was a growing stock of Scots pine (Pinus sylvestris L.) dominated stands on Vaccinium type forests in Southern Finland. The connected Austrian formula is a simple way for preliminary estimation of the largest cut but its sustained basis must be checked by a stock development forecast.
In a stock development forecast the future increment and cut are calculated. For this purpose, the average site quality, tree species, age class and average volume in each class seem to be sufficient variables. The forecast is carried out within the limiting data of the present and desirable stock.
If there is an abundance of mature and over-mature stands, the largest permanent allowable cut is greater than the present increment, provided, however, that bulk of the cut is drawn by determined generation measures. Measured in solid cubic meters, the sustained cut from the Southern Finnish pine stock exceeds the present increment by 11%. With regard to the sustained saw timber production the cut can exceed the present increment by 5–7%.
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This article is a discusses development of forest research to its present stage. The writer points out that of all different branches of industry, forestry is probably the one most based on practical experience, as it is not until recently implied in discriminate exploitation of available natural resources. In addition, until recently job performances in forestry were essentially based on the muscular strength and acquired skills of the individual worker. Until the eighteenth century the tenor of scientific thought was alien to a domain like forestry. Prior to that time, science meant jurisprudence, theology and philosophy. After Linnaeus science experienced a time of expansion. Since then, the contact between science and forestry has developed along two different lines. First, forest has attracted the interest of biologists. Second, where forestry has been unsuccessful in solving its own problems, the need has arisen for theoretical investigations.
The article is published in English in separate PDF Acta Forestalia Fennica vol 70 no 12.
This article is a review of Finnish forest research in the field of forest economics in the previous 50 years. Forest economics in Finland is comparatively young as an independent field of forest research. Not until 1922 was the office of Professor of Forest Economics established in the University of Helsinki. The Department of Forest Economics was established within the Forest Research Institute in 1928. The article presents the main fields of investigation, namely Finland’s forest resources and forest balance, forest ownership policy, forest legislation and forest taxation, forest labour, forest geography, forest industries and wood transport, marketing of forest products, and business economics of forestry.
The article is published in English in separate PDF Acta Forestalia Fennica vol 70 no 10.
This article is a review of Finnish forest research in the field of forest technology in the previous 50 years. The field of research is relatively new among the forest sciences. In the beginning and still during the last century forest technology as an individual field of science was directed entirely towards the anatomical properties of wood and their uses, and to the chemical composition of wood. Later the attention was given to the actual forest work, mainly felling, logging and transportation of timber. The invention of production of wood pulp and cellulose opened new fields of work within the processing and use of wood.
The review indicates that the forest technological research is finally going ahead at full speed. It has proved right that logging technics have received attention in research. The technical questions are by nature such that they require a rapid solution in order that the production machinery would not stop.
The article is published in English in separate PDF Acta Forestalia Fennica vol 70 no 8.
This article is a review of Finnish forest research in the fields of forest mensuration and management during the previous 50 years. Of the studies special attention deserves the development, structure and growth of growing stock and forest survey. The development during the past half century has led to the differentiation of forest mensuration into a few independent fields of knowledge. Fields closely connected with forest mensuration are photogrammetry and statistical methods.
The article is published in English in separate PDF Acta Forestalia Fennica vol 70 no 6.
This paper is a review on the silvicultural research in Finland, researchers and the main subject of the research within the previous 50 years. The task of silvicultural research is to serve forest management work and create a foundation for the practical operations, on one hand, and to answer to the constantly arising questions in the practice of forest management, on the other.
Forestry as an independent branch of science began in 1909. At first the research was primarily biological, dealing with both the foundations and practices of silviculture. The main subjects are divided to forest sites and vegetation, biology of trees and stand, and methods of forest management.
The article is published in English in separate PDF Acta Forestalia Fennica vol 70 no 4.
The Society of Forestry (now the Finnish Society of Forest Science) published a special issue of Acta Forestalia Fennica on the occasion of its 50th anniversary on April 29th 1959. It comprises as series of articles surveying the evolution of different branches of forest research in Finland. It also has a brief history of the Society.
The Society was founded in April 1909 at a time when the highest education of forestry was moved from the Forestry Institute at Evo to the University of Helsinki. The intention was to get the teaching onto a scientific basis and to enable graduate study leading to an advanced degree. The Society was founded in a meeting called together by professor A.K. Cajader, who stated that domestic forestry must be supported by domestic research. The first publications of the society were published in the same year, the first issues of the series Acta Forestalia Fennica in 1914 and a new series Silva Fennica in 1926. A third series, Communicationes Forestales appeared in 1928–1933. During the 50 years, the Society has given research grants to scientist worth 4,687,900 Finnish marks.
The history of the the Finnish Society of Forest Science is published in English in separate PDF Acta Forestalia Fennica vol 70 no 2.
The distances between the lines in the line survey in the first two National Inventories of Finland were too long to supply data for every State Forest district. Consequently, the Third National Forest Inventory offered an opportunity to supplement the inventory for State Forests in 1954 and 1955, and to gather data on forest resources of the State Fforests. On the basis of the results, a management plan for the State Forests was drafted. The first part of the paper describes the inventory procedure and results of the inventory, the second deduces future cuttings and a forest management programme.
In 1955 the total land area of the State Forests was 9.49 million ha. Drained peatlands cover 126,000 ha, drainable peatlands 798,000 ha and undrainable peatlands 2,621,000 ha. The average volume of growing stock in all State Forests was 55.2 m3/ha, including productive and unproductive forest land. The average increment in all State Forests was 1,39 m3/ha on productive land and in all lands in average 1,14 m3/ha.
Cutting budgets for the progressive yield were prepared by checking the silvicultural cut and estimating the allowable cut. They were made by age classes, developmental stages and for each region. The stock development was forecasted for a period of 40 years. In average the allowable cut was larger during the first decade than during the second. Allowable cut was estimated by the tree species and by timber assortments. The management plan included future forest management work, such as intermediate fellings, regeneration fellings, site preparation, artificial regenereation, tending of seedling stands, and draining of peatland.
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This paper deals with two machines designed for abrading seed wings, and their influence on the germinative capacity of seed of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.). Both machines are commonly used in Finland.
The results of the study indicate that the act of abrading may cause slight or even serious injuries to the seed. Slight injuries of about 3% are probably not easily avoided if mechanical abrading is resorted to. It must be noted, however, that even this reduction in germinative capacity causes significant yearly loss. If the reduction in germinative capacity is greater, which seems to be possible, it is advisable to test the mechanism of the machine and its method of abrading. As the clearance of the machines can affect the extent of injuries, all machines should be tested. If possible, a continual operation control should be arranged. It could, at the same time, to supply material for improving the abrading method and equipment.
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An estimate of value of a forest holding is needed, for instance, when the holding is sold. There is, however, no standard method for forest valuation. This paper describes a method based on yield in terms of value that is estimated on the basis of cutting budget. The first, mensurational part of the investigation concentrates on calculation of cutting budget that can be used in forest valuation. Second part studies how chronological order of fellings changes allowable cut in forests that differ by age-class distribution and other structural properties. Structure and variation in the structure of silviculturally different forests are determined for the forests that form the data for the investigation.
According to the study, even if the forests studied in the investigation included forests which structure differed in their age-class distribution from normal forests, they could be managed in a such way that in 5-6 decades the age-class distribution resemble that of a normal forest, and have growing stock that correspond the stock of forests in Southern Finland, about 80-110 m3/ha. Based on this, the cutting budgets of the later decades of the first rotation can be assumed to be nearly even. The original age-class distribution of the forest affects, however, allowable cut of the forests during the first decade. The revenues of the first decade have small impact on the value, the later decades strong. Consequently, development of the most valuable part of the allowable cut, timber trees, has big impact on the value. The results show that in young forests the planned cut including the proportion of timber trees increases, in middle-aged forest it is relatively even, and in old forest declining. The results indicate the order of magnitude the planned cut can be in near future in diferent kinds of forests, and when different felling regimes are used to reach different goals.
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The investigation is divided into statistical and experimental sections, the latter of which were conducted in a Vaccinium type Scots pine (Pinus sylvestris L.) stand with the aim of elucidating the interdependence of soil humidity and meteorological factors. The moisture content of pine needles and moss and wooden cylinders placed on the soil or slightly over the ground was determined by weighing. The results showed that there is correlation between the moisture content of the wooden cylinders and the relative humidity of air during the days without rain. Correlation between moisture content of pine needles and moss with the air was slightly poorer.
In the statistical section, based on meteorological observations made in the geophysical observatory at Sodankylä in Northern Finland in 1920-1943, and forest fire statistics of the area, forest fire days and days without forest fires were divided into 40 temperature-humidity groups. Of the 391 forest fires observed in the area, the cause of the fire was known in 353 cases, and 69% of these were caused by lightning. A forest fire danger index was calculated using the data. A sharp increase in the burned area when the index exceeded the limit k=0.3 seem to be explained by thunderstorms, which are the most notable cause of forest fires in the Sodankylä area.
The forest fire index was calculated also at four meteorological stations in different parts of the country using weather observations in 1927-1936. It appears that the number of days in which the k>0.1 decreases when proceeding northwards, obviously because of the shortening of the summer. On the other hand, the number of days in which k>0.3 increases towards the north.
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In this investigation was studied 1) Volume growth and yield of timber in managed Norway spruce (Picea abies (L.) Karst.) forests under different rotations. 2) Value growth, net forest income and soil expectation value of managed forests under different rotations, and 3) The rotations of spruce forests managed on different rotation principles. The data was collected from Oxalis-Myrtillus type forests in South-West Finland.
Two developmental series of stands were constructed for the research, one of which were of better sites than the other. Sample plots were pure, even-aged spruce stands in well-managed forests. The stands had been thinned from below. The age varied from 25-30 years to the age of final cutting.
According to the study, in the artificially regenerated spruce stands the highest mean annual volume growth, 9.7 m3/ha, and also the highest net annual income of 14,50 Finnish marks/ha (calculated from average stumpages) was reached in rotation of 70 years. In the other managed spruce forests a mean annual volume growth of 6.6-8.8 m3/ha and the net annual income of 10,500-14,500 Finnish marks/ha were reached in the rotation of 70-100 years. The rotation for the maximum mean annual volume growth varied in the different series between 67-92 years. The maximum mean annual forest rent was only achieved in series B in a rotation of about 100 years, and in a naturally normal stand in a rotation of about 120 years. The intensity of thinnings and silviculture had a greater effect on value growth and on net income than on volume growth.
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Forest transport of timber in Finland has been arranged as horse haulage during winter time using horses vacant from farm work. Tractors have now begun to replace horses in agriculture, which will lead to shortage of horses for timber harvesting in future. The aim of this investigation was to find a method of mechanized forest transport suitable for Finnish conditions. The method should be provided by an agricultural wheel tractor that is shared with agriculture. It should also be applicable to timber transport of relatively small forest holdings.
A method for time studies of tractor driven timber harvesting was developed. The competitivity of tractor transport of timber against the traditional method was studied in four pulpwood harvesting sites. The results suggest that if the tractor forest transport method in question is to be applied in practice, conditions should first be chosen which favour it most. A tractor forest transport method evolved on the basis of experiments presupposes certain conditions to be successful. These include snow for the construction of the packed-snow driveway, frost to harden the driveway, the location of strip roads in relatively easy topography, and of the main haulage road that is gently sloping in the haulage-loaded direction. The optimal transport distance for this method are about 3-10 km.
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According to studies following the development of vegetation of drained peatlands, it seems that they have transformed to a relatively stable plant communities during the succession. In earlier studies it was assumed that after drainage a mire type would develop to a corresponding forest site. This investigation studies what kinds of plant communities are formed during succession of different mire types on peatlands drained for forestry in the southern half of Finland. Understorey vegetation was studied in 18 sample plots established by Forest Research Institute on drained peatlands. In addition, sample plots were studied on peatlands in natural state.
The results suggest that understorey vegetation on peatlands drained for forestry have developed into plant communities, the most advanced of which are the so-called dry plant communities. They represent transformed site types, which are the following: drained peatlands with upland herb-rich vegetation, drained peatlands with upland grass-herb vegetation, drained peatlands with upland Myrtillus site type vegetation, drained peatlands with upland Vaccinium site type vegetation, and drained peatlands with upland Calluna site type vegetation. Drained peatlands with upland Cladonia site type vegetation seem to be a temporary type caused by incomplete drainage. The transition between Myrtillus and Vaccinium dominated dry plant communities is not clear, but especially the pure Vaccinium vitis-ideae communities justify its place as an independent plant community. The dry drwarf shrub plant communities are also stable.
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This investigation studies the significance of forest income to the economy of a farm in Finland. It concentrates on the relationship between monetary income from forestry and the capital of the farm, especially from the viewpoint of investments made in the agriculture. The material is based on results of the accounting holdings of the National Board of Agriculture between the financial years 1925-1926 and 1936-1937.
The study shows that there is a high correlation between farm’s monetary investments and changes of deposits, and changes in the monetary income of forestry. The changes in depts seem not to be as closely related to forest income as could be expected. The most important role of forestry income in farm economy is financing the investments, i.e. operations that aim at developing and rationalizing farming and making it more profitable. In many parts of the country, the investments would have remained low without income from forestry. Income from cuttings provides usually a relatively large sum on a single occasion, which is easier to use to finance a large investment compared to a smaller regular income. The needs of agriculture may, however, lead to overcutting of the forests.
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The article deals with forest ditches dug by manual labour in drained peatlands in Central and Southern Finland, ranging in age from 16 to 25 years. The ditches have been allowed to develop in a natural state. A total 1,160 of randomly selected sample plots were studied.
The results show that the originally dug ditch depth has not been the decisive factor from the viewpoint of maintaining the ditch repair. Ditches dug in thick peat layer have maintained their repair better than those dug in thin peat layer. Apparently, the influencing factor is the type of soil, to a certain extent parallel to the thickness of peat layer. In ditches dug mainly in mineral soil, the type of soil has essentially contributed to maintaining the ditch repair. Ditches in coarse-grained soils maintained a better repair than those in fine-grained soils. Also, the steeper the gradient of the ditch the better the ditch repair has been maintained. There was no relationship between the thickness of peat and the filling up of ditch bottom, because of the influence of mineral soil. Filling up of a ditch seems to be mainly due to the sinking of peat. The filling up of ditch bottom was more pronounced in clay-silt soil than in other soil types. The filling up of ditch bottom by varying gradient is due to the fact that with a small gradient the speed of water is so slow as to permit the soil particles to sink to the bottom. Another factor affecting filling up of the ditches is wetness of the peatland. Deepening of ditches happens mainly through erosion, if the gradient is large enough. The study suggests that a 50-m spacing with about 60-cm ditchc depth would be most profitable.
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Bark beetle populations live usually in a balance in natural forests, and outbreaks occur seldom. The populations have been found to increase in managed forests. Fellings affect the structure of the forests, which influence the living conditions of the insects, and produce material for reproduction. In this study the occurrence of bark beetles was studied in a forest area in Etelä-Häme in Southern Finland using line plot survey.
The forests in the area were Norway spruce (Picea abies L. Karst.) dominated. Over third of the 140 sample plots studied were in forests which had never been cut or it was over ten years to the last logging. Bark beetles of 26 different species were found in 66 of the sample plots. The most common species was six-toothed spruce bark beetle (Pityogenes chalcographus L.), which was due to the abundance of growth material suitable for the species in the area. New species in the area were common double-eyed spruce bark beetle (Polygraphus polygraphus L.), Pityophthorus micrographus L., and Dryocetes-beetle (either Dryocetes autographus or D. hectographus). The fellings increased the occurrence of beetles. The amount and quality of logging residue affected the abundance of the insects.
The PDF includes a summary in German.
This paper aims at creating a picture of the tasks of forestry departments of those enterprises engaged in the wood working industry in Southern Finland, to analyse tasks performed by them and to discover the details from which the tasks have been built. In the first part of the work a general theory of organization study is dealt with from the point of view of structural research, and in the second part the results obtained are applied to the forestry departments.
The PDF includes a summary in English.
The investigation is based mainly on the material collected for Finnish rural labour force study in connection with the 1950 Population Census. A total of 44,667 men, aged 15-64, were interviewed in connection of the census, and a sub-group consisting of a sample of the forest and floating labour, 28,850 men, was formed for this study. Finnish rural population typically cultivates the land, tends cattle, works in the forest, builds roads and houses and floats timber without specializing in any of these jobs. The work done in the own farms is called unpaid work in this study in contrast to paid work outside the farm.
The paid forest and floating labour force (308,600 men) includes all forest and floating workers who reported that they have worked for a minimum of one day. Forest work is heavily winter-dominated. Only in the floating work there was a declining trend in the time series of 1933-1934 and 1942-1955. The average forest and floating labour input per man was small, 40-70 days depending on the occupational group. Only 13,000 workers worked over 200 days, and 32,000 worked 150 days. 44% of the paid forest and floating workers were members of families cultivating small farms, 26% had larger farms, and the remaining 30% were farmless or members of a family holding a building lot.
The main difficulty in finding manpower for summertime forest work seems not to be the lack of time for paid work because of the men’s unpaid work. They seem to prefer other, more attractive paid work.
The PDF includes a summary in English.
In Finland the workers engaged in forestry and, in the rural districts, also in construction are seldom occupied with the work throughout the year or even for greater part of the year. Due to this, these industries seem disproportionally small in the statistics of census. The aim of this study was to gain figures that describe better the significance of these industries. Therefore, data was collected by replacing the man unit by a time unit, a day. The results are raised estimates of the activity by the men interviewed in 1950 Census of Finland, aged 15-64, living in rural communes.
In four areas of Finland, namely South-West Finland, Ostrobothnia, South Savo and Savo-Karelia, the male labour input to agriculture as a proportion of the total activity of the male labour was greater than in other parts of the country. In the western part of the country, the conditions of agriculture are favourable and the farms larger than in average in the country and the intensity of farming is greater. In South Savo and Savo-Karelia the conditions are poorer, consequently, the male labour input to agriculture per hectare under plough is greater than in the western areas.
In Finland, forest work is an occupation supplementary to work in agriculture, but the agriculture, based on predominantly small farms, is unable to utilize the entire work potential of the farming population. In Central and Eastern Finland, the forestry districts often coincide with the agricultural districts. In the coastal areas, where agriculture was relatively intense, the labour input to forestry remained small. The best forests are situated in Southern, Central and Eastern Finland, and the labour demand is, therefore, larger. Unemployment was heaviest in Southern Finland in certain densely populated districts with high proportion of urban occupations. It concerned mainly building workers, general labourers and harbour workers. In Northern Finland there was structural unemployment independent of business cycles.
The PDF includes a summary in English.
The data on housing conditions presented in this study derives from the general population census of Finland of 1950. The sub-sample of professional forest workers was taken from the sample collected for the larger investigation of rural labour force. The housing density of professional forest workers was considerably higher than the average for the population in general. The total population of the country, according to the 1950 Census, showed a ratio of 154 persons to 100 rooms, while the average weighted with the number of rooms for forest workers was 237:100, and the unweighted 340:100. If three per room is taken as the limit of crowded housing, nearly half of the professional forest workers lived in crowded conditions. Over two-thirds of them owned their dwellings, and only 2% of them lived in dwellings owned by the employer. Three quarters of all the men belonged to the holder-family of small farms. About three quarters of them lived in dwellings of one or two rooms. Also, the size of the family and household affected the housing density. The housing density exceeds the average in the youngest age classes. This is probably because the sons of families with poor economic standing must start work young in forestry, and those families have a high housing density. A quarter of the families had electricity in their dwellings. Few had running water or sewage in their houses.
The PDF includes a summary in English.
The investigation into the manpower of small farms is a part of the 1950 rural labour force survey. The purpose of this work was to study the use of manpower of small farms, that have 0.25-0.499 ha under plough. The manpower of the farms refers to men of 15-64 years of age, members of the family, whose input of unpaid labour to farming was not less than 21 days in 1950. The aim was to find out the extent to which the labour input was to farming and to what extent to paid work outside the farm. The data was collected in connection to the census of Finland as a sample.
The men of small farms are primarily temporal workers in the different occupations. Their labour input in the own farms per hectare under plough increased as the size of the farms decreased. This seemingly contradictory result is due to a low decree of mechanization, the organization of work, the quality of the labour force and the great relative importance of maintenance work in small farms. Also, especially in the remote areas there is not available enough paid work for the men living in small farms. Farms in Lapland and the county of Oulu had most forest land, which increased the unpaid work on forestry. Forestry in small farms tends to require more unpaid work, because they use less hired labour and make less sales of standing timber.
This is the workforce in forest and construction industry, that are sensitive to business cycles, and draw additional manpower during boom of trends without affecting unemployment figures. Agricultural income of the men of small farms was estimated by comparing it with wages of a worker. Their income per day for unpaid labour was lower than the daily wage of a farm worker. High number of small farms is a result of agricultural policy in Finland. The aim has been to keep the proportion of agricultural population high since it is considered to be best able to provide work and a decent living. The farms, established in connection with the abolition of tenant farming and through colonization, were mostly small.
The PDF includes a summary in English.
The study is a part of the investigation of the rural labour force in Finland in 1950. The data was collected in the form of a sample in connection with the census of Finland, and covers the rural male population of the age of 15-64. In this study the men in the age group of 15-19 are classified as youths and the 20-64 as adult men.
Youths in rural districts participated in production, calculated in man-days, to almost at the same extent as adult men. The total labour input of the youths was 78% of the total activity, and that of adult men 85%. About 75% of the men or their families owned a farm. The main activity, 151 days a year, of 47% of the youths and 51% of the adult men was in work on their own family farms. The input of paid labour of youths was smaller than that of adult men.
In rural districts 37% of the youths and 47% of the adult men spent the main part of the annual round of activity in paid work. However, in Lapland only quarter of the youths and half of the adult men was in paid work. Forest and agricultural work seem to have a greater meaning for youths, and construction of houses and industrial work for adult men. Only 12% of the youths and 13% of the men were employed principally as professional workers in forestry, agriculture or construction of houses. Jobs in industry, commerce, transport and communication had little significance.
About 36% of the youths had no permanent occupation. This figure includes, however, also those who were studying, or were at home at least for the greater part of the year. About 12% of the total activity of the youths was studying.
The PDF includes a summary in English.
The article comprises some of the principal results of the labour force material collected in connection with the 1950 census of Finland. It includes the basic tables in which are listed the calculated estimates of total number of rural male forest and floating labour force, their labour input to agriculture, forestry and floating in 1950. In addition, division of the labour force into farmers and not-farmers and by districts are presented. The unemployment time and relief work input of the rural population was also calculated.
Finland’s economic situation in 1950 was characterized by a slow recovery from depression of the previous year. The situation had not yet improved in such measure that would have relieved appreciably the rural unemployment that arose from shortage of work available in the forest.
The PDF includes a summary in English.
In Finland the general shortage of labour during the Second World War called attention to employment problems in forestry. After the war the scope widened to include sociological and human maters. The Finnish Rural Labour Force Study deals with the whole rural labour force, not only forest work. Due to the scale of the subject, pilot studies were started by the Institute of Forest Economics at the University of Helsinki and the Central Statistical Office and the Board of Agriculture in 1950. This article describes in detail the methods used in the pilot studies the and main survey.
The aim of the survey was to obtain a reliable picture of three subjects. 1) The labour input of the male rural population during the observation year, its distribution and the seasonal fluctuations in the structure of labour input. 2) The unemployment time of the rural population, the periods underemployment and its seasonal variation. 3) The number of male workers engaged for a shorter or longer period during the year in certain occupation. The paper discusses the different data sources and ways to collect the data either from enterprises or workers. One of the obstacles is the large number of enterprises in agriculture and forestry. Consequently, the total number of people employed in a particular industry, its distribution and the duration of the working season can be estimated only from a sample selected from the population.
The data of the survey is based on a systematic sample, collected by interviews, of the annual round of activity in 1950 of 44,667 men of 15-64 years of age living in Finnish rural communes. The interviews were made in connection with the 1950 census of Finland. The results of the survey are presented in the other articles of Acta Forestalia Fennica issue 63.
The PDF includes a comprehensive summary in English.
The purpose of this investigation was to obtain a preliminary picture of the composition of the microbial population in some virgin soils on forest land in Finland. Four different forest types were studied, Oxalis-Myrtillus type birch (Betula sp.) stand, Oxalis-Myrtillus type Norway spruce (Picea abies (L.) Karst.) stand, Vaccinium type Scots pine (Pinus sylvestris L.) stand, and drained pine bog. In addition, a flood meadow was selected as a comparison.
The methods used captured only part of the fungi growing in the soil. Rapidly growing types, especially Mucor and Penicillium species, were mainly isolated. In addition, fungi showing activity of decomposition, such as Fusarium, Monosporium and Spicaria, as well as an ascomycete of the genius Ascobolus, were isolated. Autochthonous bacteria were most abundant in the soils of Oxalis-Myrtillus type forests and in the flood meadow. In the birch stand 90% of the autochthonous bacterial flora were gram-negative bacteria, in the Oxallis-Myrtillus spruce and Vaccinium type pine stand 60% were gram-negative, while the share was only 25% in the pine bog. Nitrogen-fixing bacteria of the type Clostridium pasteurianum were found in all soils. Actinomycetes were found in all sites. The numbers of protozoa were highest in the soils of Oxalis-Myrtillus type forests.
There were no big differences between the forest soils and the flood meadow. Some groups of micro-organisms seem to be absent from the forest soils, which is probably due to the more favourable pH in the meadow. The occurrence of myxobacteria is interesting since no earlier data exist of this organism in Finnish soils.
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The article summarises the career of Eino Saari, professor of forest economics at the University of Helsinki on his 60th anniversary. He is the founder of forest economics research in Finland, and has developed the theory of forest balance. He abandoned the traditional static view of the forest balance and developed a new dynamic conception.
The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.
The PDF includes a summary in English and Swedish.
Forests have been priced by assessing separately the value of the land, small timber and heavy timber, and adding them together. This method of summing up gives a small woodlot the same price per hectare as a large forest area. In real estate sales the actual prices paid per hectare, however, are higher for small woodlots. The summing-up method thus over-values big forest holdings.
The figures obtained by the summing-up method should be corrected by using a reduction percentage. This value should increase with the growth of the forest area and should be higher for fully-stocked areas than those with small growing stock. A table of reduction percentages is presented, where an effort is made to eliminate the effect upon the statistics of the potential value of the land as building site and field. The results clearly indicate that the effect of area upon the price of a woodlot is fairly marked, even with very small parcels.
On the other hand, determination of the reduction percentages has some theoretical weaknesses. The author recommends a method of price evaluation which takes the factor of area directly into account, excluding arbitrary correction percentages. In this method the marketable part of the growing stock is evaluated at its felling value and its relative role decreases with the growth of the area. The rest of the growing stock together with the ground is priced as rental value. This method of professor Eino Saari does justice both to the area and to the fact that forest land and the growing tied to it form an inseparable whole.
The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.
The PDF includes a summary in English.
Periodicals connected with forestry profession have been published in Finland since 1888. The earliest paper, Suomen Metsänhoitolehti, ceased to appear in 1893, and was succeeded in 1895-1907 by Metsänystävät, published by the Finnish Forestry Association. In 1908-32 the Finnish Forest Association Tapio published a monthly periodical called Tapio, which was succeeded in 1933 by Metsälehti, dealing with forest management.
The paper Tapio focused particularly on the improvement of private forestry, and increasing interest in rational forestry and forest utilization. Its predecessor Metsälehti has even published official notices and specialist articles for the whole branch. The circulation of the paper has increased from about 8,000 copies in 1933 to 38,700 copies in 1953. Almost 90% of the subscribers are forest owners, and the rest forest professionals.
The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.
The PDF includes a summary in English.
Work studies conducted in Finland and Sweden on forest work have shown that the performance of different workers or even of a same worker vary greatly, although external conditions such as the size and other properties of the trees, weather etc. are similar. It has been decided in the Northern Countries that as it is impossible to assess the working speed of a man, it is not possible to find out the average work performances, not even from long term time studies. The only way is to collect performance statistics.
Metsäteho (Forest Work Studies Section of the Central Association of Finnish Woodworking Industries) has collected since 1946 statistics on the working sites of forest industry companies in different parts of Finland on the preparation on timber. To make it comparable the material has been converted to uniform values by using the ratios given by the work time studies of various forest jobs conducted by Metsäteho. The ratios are necessary in trying to determine average performances by statistical means. The actual length of time each man is at work on different days and the actual number of days is needed, because in Finland the workers can themselves decide fairly freely the length of a working day. In forest work, wages are paid for the quantity prepared, not for time. The statistics collected by Metsäteho include information on the length of the working days, and conditions in each forest, such as the size of the trees, form of stem, branchiness, bark thickness, terrain, density of the forest, weather conditions etc.
The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.
The PDF includes a summary in English.
Due to the nature of forest taxation in Finland, there has been no information available on the amount of tax paid by forestry or of taxable forestry income. The main reason for this is the close connection of taxation of forestry and agriculture, which has made it difficult and expensive to separate the information of the sectors. This study determined the amount of taxable forestry mathematically based on statistics on the taxable forest areas in each tax zone on a county level.
The article concludes that the stumpage has been considerably higher than the taxable income in 1950-1953. In 1951 only 18.5% of the income received as stumpage was taxed, but in 1953 the proportion was 82.8%. In average 45% of the stumpage amount had become subject to taxation.
The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.
The PDF includes a summary in English.
In Finland the state has to pay local government taxes and certain connected smaller taxes, such as church and land taxes and forest management fees, on its forest property. On the other hand, the state tax on income and property is not collected, as the corresponding amount goes to the state in the form of a state forestry surplus.
It has been stated that if the state should pay similar taxes as companies do, the income of state forests would be small. The author has calculated the different taxes if the state forests would be a company or an individual tax-payer. As a company the income and property taxes would amount to 1,251 million marks and as a company to 730 million mark when the year 1952 is used as a reference. In drawing up the balance sheet for state forestry, local government taxes and other similar charges have been taken into account as expenses. By comparing the surplus with the calculated state tax payable, the state forestry would give a surplus, after deduction of taxes, of 1,846 million marks as an individual and 2,367 million marks as a company. State forestry would thus have been able to pay state income and property taxes from its surplus.
The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.
The PDF includes a summary in Engilsh.
The wage problems of forest workers were first studied in 1931-1932, when the depression compelled the enforcement of a wage control system in forestry, and thus produced statistics on the earnings of forest workers. When the wage controls were introduced in 1934, it was necessary to determine wage norms on which to base the assessment on working results.
Three different norms were defined. The norm of daily earnings means the amount an adult, able-bodied, skilled forest worker should be able to earn in an 8-hour day at piece work. The norm of daily salary is the amount of a forest worker should be able to earn in an 8-hour day at time rates, and the wage norm per hour for floating workers is the amount a floating worker should receive per hour. The wages are controlled by special inspectors, and statistics on wages are collected by reports of the inspectors.
The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.
The PDF includes a summary in English.
In Finland the state has to pay local government taxes and certain connected smaller taxes, such as church and land taxes and forest management fees, on its forest property. On the other hand, the state tax on income and property is not collected, as the corresponding amount goes to the state in the form of a state forestry surplus.
It has been stated that if the state should pay similar taxes as companies do, the income of state forests would be small. The author has calculated the different taxes as if the state forestry would be a company or an individual tax-payer. As a company the income and property taxes would amount to 1,251 million marks and as a company 730 million marks using the data of 1952. In drawing up the balance sheet for state forestry, local government taxes and other similar charges have been taken into account as expenses. By comparing the surplus with the calculated state tax payable, the state forestry would give a surplus, after deduction of taxes, of 1,846 million marks as an individual and 2,367 million marks as a company. State forestry would thus have been able to pay state income and property taxes from its surplus.
The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.
The PDF includes a summary in Engilsh.
In Finland a large land reform has been accomplished which has increased the number of small farms and forest holdings by over 100,000. It is estimated that 4-5 million ha of forest land has been transferred to these smallholdings. The aim of this investigation was to study the areas of the wood lots of the farms established in connection to settlement activities during the time Finland has been independent.
The study shows that the farms established on the state-owned lands have been given forest areas big enough to enable them timber sales, provided that the forests were in a moderately good silvicultural condition. Relatively largest forest areas have been given to farms established from tenant farms. The farms established on private lands have got in average forest areas that are smaller than would be required for growing of household timber. In Southern Finland the area has been adequate, but in Northern Finland too small in part of the farms. Also, variation in the size of the farms has been larger. The farms established under the Land Acquisition Act have been given in average more than the principle of according to which half of the forests should be suitable for cultivation of household timber and half for timber sales.
The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.
The PDF includes a summary in German.
A state committee report proposing the enactment of a Forest Management Act has recently been published in Finland. The act is intended to be considerably more binding on forest owners than the present law concerning private forests which it would replace. The author assumes that the publication will raise a keen discussion that will ensue pro and contra the proposed law. The article includes a review of the first draft for a Forest Management Act prepared in the wartime winter of 1944. At that time the then minister of forestry N.A. Osara and professor Eino Saari had studied the draft. The former commented the act to the author by saying that after the return of peace the forests would have to be prepared to be restored to good condition, using radical measures if necessary. He foresaw that a proposal for the forest management law might meet with some resistance, but thought it was important enough to be forced through nevertheless. Professor Saari pointed out that bearing in mind that hardly any other country in the world is dependent upon her forests to such a decree as Finland, the requirement expressed in the draft (forests must be managed with a view to the most advantageous return as regards tree species, quality and quantity) must be considered justified. The author hopes that despite the prevailing resistance foreseen by Osara, a law will be enacted to correct the situation under the present law which tends to leave the management of our forests to the mercy of arbitrary decisions.
The Silva Fennica issue 61 was published in honour of professor Eino Saari‘s 60th birthday.
The PDF includes a summary in English.
The origins of time study has been in the need to streamline industrial work. One of the differences between industrial and forest work is that in forest work the working conditions are subject to continuous changes. The work is also strenuous, and physical strength may come into its own in addition to skill. For these reasons, the product of a worker per time unit varies in forest work much more than in industrial work.
In industrial time studies, determination of working tempo is, besides measurement of working time, vital when calculating the normal work performance. In the Northern Countries, it has been concluded that it is impossible to determine the working tempo of a forest worker. A so-called comparative time study in which a study is made of the work performances of the same workers at different jobs and in different conditions so that the measured working times are directly comparative. Also, the requirements made for the extension of time study material are considerably greater than in Central European time studies. It is believed that the workers subjected to time studies must be observed for at least a week in each kind of work studied if the results are to be considered reliable.
The Silva Fennica issue 61 was published in honour of professor Eino Saari‘s 60th birthday.
The PDF includes a summary in English.
The goal of improving forest management and doubling the yield of forests in Finland is a great task that requires law, encouragement, written propaganda, practical advice and purposeful work in the forests. In addition, it requires idealistic promotion and education of the citizens. The article discusses the nature and scope of forest propaganda. Different means of forest propaganda and promotion, such as lectures, films, newspapers, magazines, forest literature, stamps, placards and posters, excursions, exhibitions, fairs, forests along the main roads, competitions, education of youth etc are discussed, and their usefulness assessed.
The Silva Fennica issue 61 was published in honour of professor Eino Saari‘s 60th birthday.
The PDF includes a summary in English.
The statistics of forest fires in Finland expanded in 1952 to include uninsured forests, when previously the statistics included only fires in state forests and insured forest holdings. For private forests the material is collected by central forestry associations with the aid of district forestry boards, and for state forests by the Forest Service which also prepares the overall statistics on forest fires in the country. Forest fire statistics for 1952 and 1953 have been prepared on the basis of regional grouping by counties.
In 1952 a total of 299 forest fires were discovered, affecting a burnt area of 764 ha. Of these 20 were in state forests, burning 139 ha, and 279 in private forests, burning 625 ha. The average devastated area was 2.6 ha (in state forests 6.9 ha). This year was the easiest from the point of view of forest fires in the period between 1946-1953. The year 1953, on the other hand, was the worst of the period. The number of fires was only 216, but the burnt area was 8,955 ha. In state forests 87 fires devastated 8,624 ha. In private forests 129 fires burned 331 ha. The average area destroyed was 4.2 ha (in state forests 99.1 ha, and in private forests 2.6 ha). The largest fires on state forests were in the northernmost districts of the country.
The Silva Fennica issue 61 was published in honour of professor Eino Saari‘s 60th birthday.
The archives of the advisory organizations for private forest owners in Finland, Regional Forestry Boards and Forest Management Associations, include statistics of fellings in private forests. This investigation assesses felling areas and proportion of different kinds of fellings in 1945-1952 based on the statistics. The statistics does not include fellings where the trees have been marked by a forest owner.
The total area marked annually for cutting was in average 498,300 ha. As there is 1,24 million ha of private forests in Finland, the marking gives opportunity to improve the silvicultural state of private forest relatively quickly. The share of regeneration fellings has increased after the Second World War in many parts of the country. The result indicates that the annual cuttings in private forests have corresponded the amount of fellings that has been estimated necessary according to the National Forest Inventory. There are, however, big differences between different parts of the country.
The PDF includes a summary in German.
The article revises the accomplishments of professor Peter Woldemar Hannikainen, the former director of Forest Service of Finland, in the development of forest sector in the end of 1800s and beginning of 1900s.
The PDF includes a summary in German.
The quality of birch (Betula sp.) stands in Perä-Pohjola in Northern Finland is low due to the harsh environment, unsuitable sites for the species and unsatisfactory silvicultural state. A total of 236 sample trees were felled and measured in 8 sample plots. The trees were over 80 years old.
Only third of the stand volume of birch in the stands had adequate quality for merchantable timber. This is due to birch growing often in sites unsuitable for the species, the low density of the stands, the small average size of stems, and the low amount of large sized trees. These problems may contribute to the fact that birch seem to be susceptible to decay. The trees have often grown from sprouts, which leads often to poor stem form and decay. The volume and quality of both pure and mixed birch stands was sufficient only in the most fertile sites. Also, decay was more common in poor sites.
The PDF includes a summary in German.
This special volume of Acta Forestalia Fennica is published in memory of professor A.K. Cajander (1879-1943), who was one of the founders of the Finnish Society of Forest Science. It contains a short biography, a complete list of his literary works and one of the papers on forest types he has written.
This PDF includes his article on forest types in Finnish. The translation of the text in English can be found in a separate PDF (article id 7396).
The idea of forest types was developed by professor Cajander first in 1904-1909, when he was working as a student in the Evo Forestry Institute. The first publication in 1909 was followed by intensive research and the findings of the investigations were published in 1929 in Acta Forestalia Fennica 29 (Metsätyyppiteoria, The theory of forest types).
When classifying forest growing sites, the purpose is to combine those having the same or approximately same yield capacity, and to separate into different classes those whose yield capacity is widely different. The article states that site quality classification is a necessity in organized forest management as it gives a basis for all forest calculations concerning with yield and profit. The principles of site classification and its meaning in forest management is discussed.
The investigation studied the conditions on which business economics of large-scale forestry, mainly in the state forests, operates. It gives an overview on the economic geography of the state forestry in Finland, including the location of forest industry units and purchase of raw materials in relation to the state forests. The calculations are based on the of the financial performance of the districts of Forest Service in Finland.
The state forests are situated mainly in Northern Finland. Only 6% of the forests were situated nearer that 10 km from the nearest railroad, floating channel or business center. The size of forest districts decreases from north to south and from east to west, which affects the intensity of felling and the economic result of the districts. On the account of the remote situation of the forests of the state the amount of timber felled has been considerably below the growth of the forests.
During the period of 1924-1943 annual cut in state forests decreased in Northern Finland, stayed in the same level in the east and increased in the west. Proportion of large-sized timber of the sales decreased, while the sales of piled pine wood, mining timber and sulphate wood increased. The economic result of state forests was in average modest, reflecting the economic result in the northern districts were the most state forests are located. However, the financial results of the state forests were not less good than those of other forests under similar conditions of economic geography. Proximity to floating channels and especially railways increased the effectivity of fellings. Railways made it possible to harvest also small timber that is difficult to transport by floating, thus increasing the felling volume. Finally, means to improve profitability of state forests are discussed.
The PDF includes a summary in English.
The different kinds of injuries in Norway spruce (Picea abies (L.) Karst.) stands was studied in 52 sample plots in Peräpohjola in the northernmost Finland. The age classes of the stands varied from 100 years to over 220 years. Most of the stands were unevenaged, as is usual in the area.
In the younger age classes (121-160 years) majority of the trees were of normal quality or had smaller injuries in all forest types. In age classes over 160 years the trees of merchantable quality decreased markedly in all forest types. The quality of the trees decreases with the age especially because of butt rot, braking of trees and crooks, forks and heart and top decay caused by the injuries. To ensure future quality it would be important that the stand is healthy from the beginning. When old spruce stands of the area are in large extent diseased by the root rot, it is questionable if they can be regenerated using natural regeneration. The spruce stands of the area are also relatively branchy. This could be prevented by growing the young stands dense. Changing the dominant tree species to Scots pine (Pinus sylvestris L.) in the dry upland forest sites could be a way to improve the quality of the forests in the area.
The PDF includes a summary in German.
The Private Forest Act came into force in 1928 in Finland. According to the act, felling of a mature stand should not endanger natural regeneration of the site, and an intermediate felling should not conflict with justifiable thinnings. 18 District Forestry Boards were appointed to enforce the compliance of the act. The aim of this investigation was to study what kinds of violations against the Private Forest Act were found in the fellings, what were the consequences, and how the fellings were overseen.
The investigation is based on 2,477 felling inspections made by the District Forestry Boards in cases where forest devastation was suspected. The report divides the different kinds of violations by the different District Forestry Boards, years, the size of forest holdings, ownership of the forest holdings and by executor of the felling. Over half of the inspections were held on fellings done by the forest owner, 14% by the forest industry, and 11% by a broker of timber. Neglecting the obligation to give a notification of felling had increased in the period of 1929-1938. Also, the cases of forest devastation increased slightly. The report suggests some improvements in the act that would, for instance, increase activity of the forest owners to give the required notification of fellings before the felling takes place.
The PDF includes a summary in German.
This investigation concerns the felling volumes in Finland in 1935-1945 as regards future fellings. The statistics are divided in two time periods: 1935-1939, when there was an upward trend in the trade cycle, and 1940-1945, when the trade was disturbed by the Second World War. Fellings of household timber and for sales are presented separately.
Removal was annually in average 38.1 million cubic meters (cbm) without bark in 1935-1939, and 29.8 million cbm in 1940-1945. According to the statistics, felling volumes decreased by about one quarter after the period of 1935-1945. Reduction was largest in private and company forests, but smaller in the state forests. The increment balance for the 1935-1945 shows an excess of growth that gives an accumulated yield of 24.4 million cbm.
In private forests the cut is about half as large as the growth of the standing stock due to the poor silvicultural condition of the forests. Private forests account for about ¾ of the total forest area in Finland. In the state lands the cut is 130% of the growth. The report introduces also rental cut, a method developed by the writer, which defines the volume to be cut aiming at the same time to optimise the future increase of the yield. The principle is to preserve the young and vigorous stands, while cutting stands that have low growth.
According to the statistics, the felling volume of private forests has followed the variations in demand. It seems likely that in the coming years the fellings will not be kept within the limits calculated by the rental cut. Consequently, the reserve formed during the war will be utilized. To meet the demand of wood, forest management must be improved and preference should be given to regeneration fellings. Improving transportation systems, such as roads, would give access to forest resources that are now difficult to harvest.
The PDF includes a summary in English.
The aim of the study was to collect the first complete statistics on pastures and grazing of cattle in Finland. The data was collected in connection with an investigation of wood utilization in 1937-1938. Overall trend in grazing is that forest pastures are being replaced with restricted forest pastures and those further with hay meadows. This development is proceeding in the whole country, and it is almost completed in Western Finland. Grazing will probably be transferred completely to cultivated lands in the coming decades. This is important question also for the forestry, because of the damage grazing causes for forest.
Forest pastures are, however, still very important in animal husbandry. They produce over 500 million forage units. It would require 400,000 ha of hay meadows to produce corresponding amount of fodder. To sustain the present number of cattle, a third of all arable land in Finland should be hay meadows. The main goal for development of pastural agriculture is improving the effectivity of grazing and productivity of the pastures.
The PDF includes a summary in German.
According to the theory of peatland types, particular peatland types, after sufficient drainage, change into certain forest types. It has been found, that the range of forest types in peatlands in different stages of draining is as large as on mineral soil; and comprise Cladina, Calluna, Vaccinium, Myrtillus Oxalis-myrtillus and grove types. Poor peatland types change into poor forest types, better for better types. However, a Swedish scientist Mellin suggested that after effective drainage especially oligotrophic bogs, when well drained, change usually into Myrtillus type.
The different conclusions are due to the fact that the same bog type may develop into different forest types according to the effectiveness and duration of the drainage. Greater the decay of the peat bog layer, the more exacting is the type of vegetation which appears. Bog types of classes V, IV and III (Finnish classification of site quality) change into a Myrtillus type, as do the poorer peatland types of class II. The types vary, however, in their economical drainage value. The fact that bogs which in their natural stage are clearly different in their site quality change after through drainage into the same forest type, is explained by the chemical quality of the peat. However, class I and the best types of class II bogs change into better forest types because they as eutropchic bogs are richer in nitrogen and lime. This difference persists despite of effective draining.
It has been shown that the development of eutrophic peatland types at the forest type stage also differs clearly from the development of oligotrophic peatland types. The Finnish classification of drainage value shows correctly the relative drainability when using normal spacing of ditches. The notes on forest types on mineral soil should, however, be replaced by corresponding notes on the transitive types between bog and forest types.
The PDF includes a summary in Swedish and English.
Observatons of drying of Norway spruce (Picea abies (L.) Karst.) stands increased in 1930s in Southern Finland. The aim of the study was to analyse the advance and causes of drying. The work was begun in 1930s before the Second World War, and the damages caused to the forests by the war was used as supplemental observations in the study. A special method, drying analysis, was developed to study the process. It was used both in cases of insect and fungal diseases in the four research areas in Raivola and Ruotsinkylä. In addition, 7 observation areas were studied.
Several causes for drying of the trees were observed in the Norway spruce stands. These included European spruce bark beetle (Dendroctonus micans), root rot (Heterobasidion annosum), pine weevils (Pissodes sp.), bark beetles and honey fungus (Armillaria mellea).
The role of primary and secondary causes for drying, resistance of the trees and the drying process are discussed. Finally, the influence of forest management in drying process is analysed. Forests in natural state can be considered to be in an ideal balance. On the other hand, forest management can be used to maintain the vitality and resistance of the forests. Drying of Norway spruce stands can be taken into consideration when the stands are managed.
The PDF includes a summary in German.
The article gives a detailed review on the history and principles of forest management in Finland from the 19th century to the beginning of 21th century. Organized forest management begun in Finland in the middle of 19th century. The first method applied in Finland was based on annual cutting area and mainly used in state forests. By the beginning of 20th century saw-timber selection became the most usual felling method. Gradually the main principle changed to forest management by stands and revision of forest working plan.
The PDF includes a summary in German.
The aim of the investigation was to study the effect of size of a forest holding to its forest resources or state and quality of the forests. The data was collected in the second national forest inventory in Finland, carried out in 1936-1938. The study focuses on farms in two areas in Southern Finland: provinces of Pohjois-Häme and Satakunta, and provinces of Uusimaa and Kaakkois-Häme.
In 1938 about 53% of forests in Finland were owned by private forest holdings, the sizes of which varied from under 5 ha to over 1,000 ha. About 75 % of the holdings were under 50 ha. After 1918 the number of private forest holdings increased markedly, mainly due to settlement and tenant farmers gaining ownership to their farms.
The smaller the forest holdings were, the poorer was the silvicultural state of the forests and the smaller the standing stock. When the area of the forest holding increases, also the volume of the standing stock per hectare, the number of timber-trees, and average size of the timber trees increases. This is due to larger proportion of older age-classes and somewhat better forest management. Fellings have usually been stronger in the smaller forest holdings. The poor state of the forests originates often from use of the forests before the present ownership, such as slash and burn culture, grazing and cutting wood for household use. To improve the state of the forests, education and forest improvement practices are needed.
The PDF includes a summary in German.
The article is a report of land purchases of wood manufacturing industry, commissioned by the Ministry of Agriculture and Forestry in Finland in 1935. Second World War postponed publishing of the report. The land purchases of wood manufacturing industry, especially farms with agricultural land, was considered a concern in the end of 19th century, because it caused social problems related to landless people. To solve the problem, the government of Finland enacted in 1915 an act that restricted land purchase of the companies. The aim of this report was to collect statistics on the extent of the land purchases.
According to the investigation, forest manufacturing industry and companies operating on timber sales intensified land purchases in 1890s. After 1894 the companies purchased 80,000-100,000 ha land yearly. When the regulations restricting purchases of land came into act in 1915, the companies evaded the regulations by using private people or other companies to buy the land. Still, the annual purchases decreased to in average 21,000 ha in 1915-1936. The companies were still allowed to buy forest land when it did not affect agriculture in the farm. During and after the war the land purchases were interrupted. The report concludes that the regulations have worked as expected, and suggests some improvements in the legislation.
The PDF includes a summary in German.
The aim of the study was to develop a method for calculating a cutting budget that is adapted to the present forest management practices. The cutting budget determines the volume of annual cuttings for a forest holding in a certain period of time. Effect of fellings on the cutting budget depends on the cutting methods used. The study aimed at proving that growth of the forest can be estimated based on growing stock and structure of the forests for a certain time period. Accordingly, adequate drain can be defined in advance. The cutting budget is based on age-class distribution of the forest holding, which is most applicable for even-aged forestry. Calculation is based on area of the forest land and estimated volume of the growing stock. Also, the quality of the forest soil can be taken into account when age-class distribution is used. A suitable period for estimating a cutting budget is suggested to be 20 years, which is divided in two 10-year periods. The cutting budget it is included in a forestry plan. An example of a cutting plan based on the method is presented.
The PDF includes a summary in German.
The aim of the investigation was to study natural regeneration of Norway spruce (Picea abies (L.) Karst.) in drained peatlands and frost injuries in seedlings, and to compare microclimates of the regeneration areas. The experiments included peatlands in Satakunta in Western Finland. Restocking of the areas with seedlings and their survival was followed in 1935-40 at sample plots that were mainly 1 are large.
Susceptibility to freezing was shown to be dependent on the stage of development of the shoots. Shoots that have just begun to grow contain little water, and withstand better freezing temperatures than shoots in later stages of growth. Damages to the seedlings were observed when the temperatures decreased to -2.8–-4.3 °C. The most severe damage to a seedling was caused by the death of the leading shoot by spring frost.
Norway spruce regenerates easily on moist peatlands, but peatlands with dry surface tend to have little or no seedlings. The species regenerated better in marshy sites than correspondingly fertile mineral soil sites. However, it needs shelter to avoid frost damage. On clear cut spruce swamp the undergrowth spruce seedlings that were left in the site got severe frost damage. If the site had birch (Betula sp.) coppice or undergrowth, spruce seedlings survived in their shelter depending on the height and density of the birch trees. To be effective, the protective forest should have relatively even crown cover. Young spruce seedlings could grow well even under relatively dense birch stand.
The PDF includes a summary in German.
The article is an overview of forest policy in the end of 1800s and beginning of 1900s in Finland. This is a period of time, when public opinion towards forest officers and forestry in the state forests was very critical. In 1870-1890 the discussion was also accelerated by language dispute between supporters of Finnish and Swedish in Finland. The root of the problem was in the middle of 1800s when management of state forests were gradually transferred to districts administered by forestry offices. At the same time, landless people had been settling in state-owned lands and establishing farms, mostly without permission. The questions concerning settling in state forests was often addressed to foresters in the forest offices. Several commissions discussed the situation, rights of the settlers and forestry in the state forests. The general opinion supported the settlers, and they were allowed to keep their farms. Towards the end of the century the value of state forests increased, which brought more emphasis on forestry in the state lands and restrictions to settlement.
Walking in forests, hiking, is considered to be necessary for healt in many countries. In United States national parks cover 1.8% of total forest area. In addition, 25% of the forests are so called national forests, which have paths, campsites, wells, beaches, cottages etc. for hikers. In Finland, 20% of the population lives in towns and cities. Also in Finland the people living in cities and towns would need areas that resemble national forests of United states for recreation.
The PDF includes a summary in German.
The article summarizes import and export of timber and manufactured wood products in Europe before the Second World War, and outlines which are the opportunities of import and export after the war. The evaluation is based on statistics of 1936 and 1937. The export balance of Europe was positive; when all the timber assortments were included, Europe exported almost 10 million m3 more timber than it imported. Export and import of round timber were almost in balance, whereas export of paper products was about 12 million m3 larger than import. Consequently, European forest industry reached its magnitude before the war through export overseas. Foreign markets have been important especially for countries like Finland and other Nordic countries.
The war has disturbed the markets. In a scenario where Europe remains a closed sub-area in the global market, there is 10 million m3 excess of timber and wood products. Within Europe, United Kingdom is the greatest importer of timber and manufactured wood products. If UK was excluded from the European market, it would mean a big change in the export and import balance within the area. In 1936 and 1937 the import would have been only 45% and 55%, respectively, of the export if UK is not included in European numbers. If also Russia is excluded from the European sub-area, it would affect especially the export of round wood, sawn timber and plywood. Nordic countries have accounted for about 80% of European paper products export before the war. According to the article, Finnish wood resources do not allow big increase in sawn industry. However, there is potential in increasing demand of pulp in continental Europe in future. In general, Finnish forest industry would have to decrease the production, if the markets would be limited to the European sub-area.
The PDF includes a summary in German.
The Second World War revealed some weaknesses that affect also peacetime planning of military defence in Finland. One of the shortages were lack of maps applicable in military purposes in Northern Finland.
The state forests are mainly situated in the north. Consequently, cartographic material of Finnish Forest Service may be modified with little extra work for military purposes. Best suited for the purpose are forestry maps of different forest districts that have scales ranging from 1:20,000 to 1:100,000. In addition, general maps in the scale of 1:100,000 or 1:200,000 are available. The article discusses further the additions that can be made in the maps.
The PDF includes a summary in German.
Of the foreign tree species Siberian larch (Larix sibirica Ledeb.) has the biggest economical potential in Finland. In its natural distribution the species grows mostly in mixed stands in other areas than the core of its range in Siberia, where it grows also in pure stands. However, growth studies have given contradictory results about how Siberian larch can manage competition of different tree species in mixed stands. In this study two-year old Siberian larch seedlings were planted in areas previously sown with Norway spruce (Picea abies (L.) Karst.) and Scots pine (Pinus sylvestris L.). The growth of the trees was measured when the stands were 50 years old.
It appears that the stands, about 3700 larch seedlings per hectare, have originally been too been too dense. In the two thinnings done in the area, larch has probably been favoured, which has resulted in varying mix of pine and spruce. In the 50-year old stands, Siberian larch has developed faster than Scots pine and Norway spruce. Contrary to some previous studies, the results show that Siberian larch can be grown also in mixed stands, but the growth will probably be slower than in pure stands. Best growth is achieved in pure stands that have been planted thinly enough.
The PDF includes a summary in German.
Finnish municipalities can be classed in towns and cities, market town and rural communes. In 1942 there was 27 market towns in Finland. The aim of this study was to investigate the amount and state of forests in market towns. The data was collected mainly by interviewing the authorities of the market towns in 1936-1938. The statistics about forests were often insufficient.
The total land area owned by market towns was 8,963 ha, 71.7% of which was forest land, 12.0% wasteland and 16.3% arable land. A total of 21 of the 27 market towns own forest. Of all the land owned by the market towns about half is situated within borders of the town, however, 57% of the forest land is situated outside the market town itself. The forest areas are small, only four towns own more than 500 ha of forests, and only six has a forest management plan. The silvicultural state of the forests seems, however to be relatively good.
The PDF includes a summary in German.
According to the 1st national forest inventory of Finland, municipalities owned 178,000 hectares of forests in 1922, about 0.7% of the total forest area of the country. Only 60,000 hectares of these belonged to urban municipalities. The amount had increased to 73,000 hectares by 1938. Although the area was small, forests were important for municipal economy. The aim of this study was to investigate the state and forest management practices of forests in urban municipalities. The data was collected mainly by interviewing the authorities of the municipalities in 1936-1938.
Forests covered 50-80% of the area of the urban municipalities, the total area varying from 111 hectares to 7,791 hectares. Only four municipalities owned more than 5,000 hectares of forests. Annual profit of forestry in all urban municipalities totalled about 4.6 million Finnish marks in 1931-1935. Quality of productive forest lands was relatively good, but the volume and growth of the forests rather low. The silvicultural state of the forests could be improved. The article points out that this requires continuous planning. The basis of this is forest management plan, which has been demanded of municipal forests since 1893. However, some of the urban municipalities still lacked a forest management plan, or it was not fully used in forest management.
The PDF includes a summary in German.
The aim of the study was to find out what are the causes of damage in Scots pine (Pinus sylvestris L.) stands and the frequency of different kinds of injuries, which are then discussed in relation to the silvicultural state and management of the stands in comparison to ideal forests. Sample plots were studied in over 80-year old Scots pine dominated stands in mineral soil sites of different forest types in Northern Finland in the area of Perä-Pohjola. 10–40 trees were chosen as sample trees in each sample plot. The sample trees were felled, and the diameter, height of crown and injuries outside and inside of the stem were recorded.
Length of knot-free part of the stem was higher in the dominant trees and in older age classes of the trees. The form of the stem becomes broader and rounder with the age. The crowns are, however, longer in Northern Finland compared to Southern Finland. In management of Scots pine stands, all trees diseased by Scots pine blister rust (Cronartium flaccidum) should be removed. The disease is common in Northern Finland, and the number of diseased trees increases as the stands get older. Decay was more common in trees that had fire wounds. In general, injuries decreased the length and diameter growth of the trees. From the dominant trees should only injured and diseased trees removed in the thinnigs. Codominant trees can be left to grow when spare trees are needed to replace missing dominant trees. Detailed instruction of selection of the removed trees are given for each age class.
The PDF includes a summary in German.
Residences of priests in Evangelical Lutheran parishes in Finland, and the forest holdings belonging to them, have been received in different ways. Some have been donated to the church, some belonged originally to the state, and some have been parceled out from the lands of local farmers. The forests holdings were, therefore, not considered to be property of the church. The use of the forests was limited, and they were managed by a forest management plan under supervision of Metsähallitus (Forest Service). The aim of the study was to survey the extent of forests properties of the parishes, how they have been managed, and their incomes to the parishes in 1933-1938.
The 784 residences had 217,600 hectares of forests. The forest holdings of the residences were larger than private forests in general. Also the forest resources, as well as the stocks of standing timber were larger than in private forests. The growing stock has grown further, because increment has exceeded the fellings. The fellings and income of the forestry had been increasing. At the same time, the costs of forestry were increasing. The forest holdings were divided unevenly between the parishes. About 15% of the parishes had no forest income, while the annual income of 10% of them was over 100,000 Finnish marks. In average, the forest income coverd 21.8% of all income of the parishes. Thus, the amount of forest income influenced the height of the church taxes.
The PDF includes a summary in German.
Only fifth of the farms in Finland had no forests in 1936. Forests have been important for the economy of the farms by providing household timber and income from timber sales. However, forests have not been taken into account in the profitability studies of agriculture. The article analyses the revenues of forestry in private farms, and the different sources of revenue. The revenue is examined in farms of different sizes, different parts of the country and in different financial years in the period of 1925-26‒1936-37.
Forest holdings smaller than 25 hectares give relatively small financial support to the farm economy. Household timber saves costs, and timber sales can give opportunities to investments. The revenue given by bigger forest holdings are, however, important items in the income statement. Finally, the results are compared to profitability studies in other countries.
The PDF includes a summary in German.
The regeneration of forests in Hämeenkangas area in Southern Finland has been difficult due to various damages from the middle of the 1800s. Few seed trees were left in the area, and artificial regeneration has been used since 1880s. The area became an experimental area of the Forest Research Institute in 1924. The aim of the study was to survey the area before it was transferred to the Finnish Defense Forces.
The original Scots pine (Pinus sylvestris L.) forest of the esker area suffered from many forest fires. The total area is 13,000-14,000 ha, of which the experimental forests of Forest Research Institute cover 6,000 ha. The area is dry upland forest, and drought affects the survival of germlings. Soil frost is a major cause of loss of young seedlings. Sowing method affects the early development of the seedlings. Band sowing proved to be the best method regarding the soil frost. A total of 39 different harmful insect species, 8 pathogen species and 7 other causes of damages have been detected in the area.
The development of seedling stands follow a certain pattern, reported also in other studies. Many of the pine seedling stands develop well until they reach a certain height. After that seedlings begin to suffer from damages, but after reaching another stage develop normally. The damages affect the height growth of the seedlings. Some common damages are caused by Pissoides weevils, needle damages caused by certain beetles, shoot damages by Evetria resinella, and pine blister rust (Peridermium pini and Cronartium flaccidum).
The PDF includes a summary in GermanThe shared forests of the villages were generally parceled out to farms in the general parceling out of land (isojako) in Finland, that begun in 1775. The state established also jointly owned forests, mostly in the beginning of 2000th century when land was donated for landless population. Some have been established voluntarily. Act on Jointly Owned Forests was enacted in 1925 to ensure proper management of the forests. It contains instructions of administration of the forests.
A survey was conducted to study the conditions of the jointly owned forests. The forests, a total of 37,843 ha, are distributed evenly over the country. Average size of settlement jointly owned forests in Southern Finland are 314 ha, initial jointly owned forests in Southern Finland 1,726 ha, settlement joined forests in the county of Oulu in Northern Finland 592 ha, and initial joined forests in Northern Finland 1,268 ha. The forest lands are poorer than in other private forests. The most common age class is 41-80 years in Southern Finland and 61-120 years in the north. The forests resources were larger in the initial joined forests than in the settlement joined forests when the joined forests were established. In settlement joined forests fellings were smaller than the increment, while in initial joined forests fellings were slightly larger than the increment. Joined forests have given the owners rather good and regular income, which has probably been larger than if the forests had been managed as farm forests. Joined forests have, therefore, met their objectives.
The PDF includes a summary in German.The valuation of forest land for financial accounting purposes is usually performed only when using methods that are based on wood resources. In the yield based methods, the book value of forest land and wood resources form one totality. In the first case, forest land in a separate land account usually has same value in the beginning and end of the accounting year. For instance, the costs of forest improvement are considered capital costs. Forest land can be valued either by multiplying the average hectare price of land with the hectares, or using separate unit prices for the different forest site types. Different ways to value forest land are presented, comparing the forest site type classification developed in Finland and the traditional method based on average height of the trees used in Central Europe. The study shows that values of forest land has relative nature.
The PDF includes a summary in German.
The article includes the minutes of the Finnish Society of Forest Sciences in 1934‒1937. In the meetings of the society were held 30 presentations which are listed and shortly summarized in the article.
Total of 1,305 forest fires was ignited in 1925-1934 in the forests insured by the Metsänomistajain Keskinäinen Metsäpaloapuyhdistys (The Forest Owners' Mutual Forest Fire Insurance Company and the Keskinäinen Vakuutusyhtiö Sampo (The Sampo Mutual Insurance Company). The variation was large: from 34 fires in 1928 to 362 fires in 1933. The forest fires were most abundant in the county of Oulu and Häme. The average size of the burned areas varied from 2.4 hectares to 30.5 hectares. The area of forests that had forest fire insurance increased steadily from 2.2 million hectares in 1925 to 3,7 million hectares in 1934.
The PDF includes a summary in German.
Natural regeneration has been common in Northern Finland, where forest fires have been usual, and the large areas make artificial regeneration expensive. The regeneration, and for instance tree species composition and density of the stand, cannot been controlled. In Northern Finland there is little demand for Betula sp. which is often abundant in the burnt areas. The unburned forests are generally Scots pine (Pinus sylvestris L.) or Norway spruce (Picea abies (L.) H. Karst.) dominated mixed forests with single Betula sp. trees.
The fire destroys birch for the most part in the Vaccinium site type, but the surviving trees produce enough seeds to regenerate the areas. The largest trees of Scots pine usually survive the fires. Pine has good seed years in the north only every 8th or 10th year. Spruce is totally destroyed in the forest fire and the seedlings grow poorly as primary species. The seedling stands are usually dominated by Scots pine and birch, but birch seedlings grow in batches, and do not hinder growth of pine. The drier Calluna site type stands are dominated by Scots pine. Birch seedlings may be abundant in the beginning, but most of them do not survive. Abundant emergent pine trees prevent the growth of seedlings especially in the dry site types, and they should be thinned to guarantee regeneration. Sowing results are better few years after the fire. The birch seedling should be removed from the seedling stands.
The PDF includes a summary in German.
The financial accounting of the forestry needs redefining in Finland due to the effect of forest improvement, especially peatland drainage, on timber balance and valuation of forest land. The aim of the study was to develop methods to determine the timber balance using a separate forest land account. The problems of timber balance are related to the technical methods to assess timber balance and the cost of the work, quantitative determination of the profit, and qualitative determination of the profit. One main problem is to whether to define the quantitative profit as a sustainability of timber resources or difference in the allowable cut and outturn. The article discusses the strengths and weaknesses of the methods, and concludes that regardless of the method that is used to calculate the timber balance, profit or loss accounts have less exact nature in forestry than in other sectors. Replacing reliably calculated revenue surplus with operating result based on timber account would lead to tentative results.
The PDF includes a summary in German.
Shifting cultivation, practiced earlier in Finland, was beneficial for grey alder (Alnus incana (L.) Moench). It can produce seeds early and the early growth of the seedlings is fast. Areas where shifting cultivation was intensive, the areas next to the fields were pure alder stands, next circle was Betula sp. dominated, beyond that could be found Scots pine (Pinus sylvestris L.), and finally Norway spruce (Picea abies (L.) H. Karst.). When shifting cultivation ended, Norway spruce became more common. Many young mixed stands had Norway spruce undergrowth and alder overgrowth. The aim of the study was to find out how the stands develop to spruce dominated stands, and how they should be managed.
The density of spruce undergrowth affects the further development of both spruce and alder. The number of alder stems decreases the faster the denser the spruce undergrowth is. Alder overgrowth slow down the early diameter and height growth of spruce compared to pure stands. Also the diameter and height growth of alder remains smaller in mixed stands. The basal area of spruce develops slowly in the beginning, increases significantly by the age of 30, and surpasses the growth of pure spruce stands in Oxalis-Myrtillus site type. Thus, Norway spruce do not suffer from growing in the undergrowth. In the first years, fast growing alder seedlings limits growth of ground vegetation and protects spruce seedlings from frost. Later thinning or removal of alder benefits spruce growth. The density of spruce undergrowth decides how much alder can be leaved in the stand. If the spruce undergrowth is thin, more alder can be left in the stand.
The PDF includes a summary in German.
The article is a biography of Dr. Anton Gabriel Blomqvist, who was the head of Evo Forest Institute in Southern Finland in 1874‒1903. He developed higher forest education in Finland, and continued his career as forest scientist alongside his work in the forest institute. His works include growth and yield tables for the main tree species of Finland. His had also big influence in the development of forest management in the country. The article describes also the work of several of his colleague.
The PDF includes a summary in German.
The article is a history of Metsähallitus (Forest Service) compiled on the organizations 75th anniversary. In 1859 a declaration was signed on the founding of a forest management institution in The Grand Duchy of Finland, then an autonomous part of the Russian Empire. The article follows the changes in the organization, administration and policies concerning the state forests. The development of forest resources and the use of state forests is discussed. In the early stages of the organization, the main concern in Finnish forests was forest devastation, and one task of the officers was to prevent unauthorized use of forests. in a decree, Metsähallitus was designated a central agency under the jurisdiction of the Ministry of Agriculture and Forestry, and was given the task of “managing, monitoring and promoting Finnish forestry”.
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Forestry has been almost the sole source of employment during winter in the forested areas of Finland. The aim of this study was to investigate the number of men and horses working in logging and haulage in different times of year in 1933‒1934. The felling and haulage of household timber was not included in the study. The amount of work days was calculated using the statistics of wood consumption. The work days in logging was 10.0 million days in 1933 and 11.9 million days in 1934. Accordingly, approximately 3.6 million work days was done in horse-haulage in 1933 and 4.3 million in 1934. The forest companies and Metsähallitus (Forest Service) employed most employees in wood harvesting in January‒March, in average 14,300‒25,700 men and 3,300‒9,300 horses per month. The number of employees was lowest in August.
In floating, 1 million work days was done in 1934 and 1,1 million in 1934. Most employees were hired in April‒June. Floating is an important source of employment for the landless people when the fellings stop in the spring. The farmers working in wood harvesting can move to work in their farms.
The aim of the study was to determine how different factors in the stand influence working efficiency in felling. In the eight cutting areas in Northern Finland was harvested a total of 745,200 cubic feet of timber. The factors recorded from the cutting areas were the number of stems per hectare, volume of the stems, quality of the logs (proportion of decayed trees and knottiness of the trees), topography of the site and efficiency of the workers in a team.
The bigger the stems were, the better the result of the workers was. When the size of the stem increased by one cubic ft., the efficiency of the work increased by 2 cubic ft. When knottiness and defects in the stem changed the class describing the quality of a tree by one class, the efficiency decreased by 4.5 cubic ft. The density of the forest affected the time used for loading the timber for hauling. The hauling distance affected the efficiency of the team, which was usually either 2 men and one horse, or 3 men and one horse. If the hauling distance was long, hauling impaired the efficiency. If the distance was short, logging impaired the efficiency of the work. The result show that efficiency of forest work is greatly influenced by the quality of the forest, the trees and the workers.
The PDF includes a summary in English.
The article includes the minutes of the Finnish Society of Forest Sciences in 1932‒1934. In the meetings of the society were held four presentations which are shortly summarized in the article.
About 40% forest in Finland are mixed stands that have birch (Betula pubescens and B. verrucosa) as one of the species. The aim of this research was to study the structure of root system of birch and compare it to the other main tree species in Finland.
The root systems were dug out and measured in 28 sample plots in Southern and Central Finland, representing different forest site types. Birch roots correspond 30‒100% of the volume of the stem, the largest root systems being in the sandy soils or peatlands. Also the longest lateral roots can be found at these sites. The size variation of root system of birch is larger than in Scots pine (Pinus sylvestris L.), and the vertical root system is in general smaller in birch. Birch seems to be better than pine able to adapt its root system to the existing conditions. The smallest root systems were found in the good forest site types, but the roots grow in the good sites denser than in the poor sites. The lateral roots of the main tree species in Finland, birch, Scots pine and Norway spruce (Picea abies (L.) H. Karst.) grow in different depths, which decreases the competition between the species. This finding gives support to cultivation of mixed stands.
The PDF includes a summary in English.
The aim of the study was to find out what are the causes of damage in different parts of the trees and the frequency of different kinds of injuries. Sample plots were studied in over 80-year old forests in mineral soil sites and peatlands. All the trees over 1.5 m high were felled in the sample plots and the stem injuries were studied. The structure of the stand and the crown classes were recorded. The proportion of undamaged trees was largest in in dominant and codominant trees and increased towards the better forest site types. The typical injuries are listed for Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies (L). H. Karst.) and Betula sp. stands. The injuries were divided in inner and outer form defects and injuries, and defined in more detail by the part of the stem and tree species. Defects caused by decay were analyzed separately.
Healing over of injuries was faster in the better sites. Form defects and other injuries were more common in birch stands than in Scots pine and Norway spruce stands. Decay was most common in birch stands. The pine stands were the healthiest, followed by spruce stands. Fire wound were most usual in pine, butt rot for spruce, and crooks and general decay for birch.
The PDF includes a summary in German.
The state of Finland controls the private forestry by legislation and by promoting forest management. The initial reason for regulating the private forestry in the 1600s was to prevent forest devastation and the decrease of the forest resources in the country. The Private Forest Act came into effect in 1929. It required that regeneration of the forest is cared for after fellings and that an announcement is given of planned fellings. There are several organizations to promote private forestry and advice the private forest owners, for instance, District Forest Boards, Central Forestry Association Tapio and the Forest Management Associations. It is concluded that the Private Forest Act and the organizations have fulfilled their objectives.
The aim of the study was to investigate how the drain network and dimensions of ditches change after the drainage. The studied drained peatlands were situated in the municipalities of Parkano and Virrat in Central Finland. The ditches were in average 15 and 17 years old. The depth and width in the surface of the peatland were in average one quarter smaller than after the drainage. The width at the bottom of the ditch has, however, almost doubled. Peat had sunken more in peatlands with thick peat layer and higher humidity. Sinking of peat influenced the depth of the ditches. The volume of the ditches decreased about 30%. The decrease of the ditches by the drying and sinking of the peat was greater than the increase caused by erosion.
The PDF includes a summary in German.
Private forests account for about 2/3 of the growth of the forests in Finland, but little is known about the economy of forestry in private farms. The study analyses the forestry in private farms using accounting data of farms, collected in a survey of profitability in agriculture that was compiled by the Board of Agriculture. The sample of 18 farms represent farms where the use of forests was sustainable. The accounting data was complemented by survey of forest recourses in the farms. The typical forest site type is Myrtillus type, and the average growing stock is 96‒136 m3/ha which is above the average of the private forests. Fellings exceeded the growth of the forests in some farms, but this was compensated by uncommonly large forest resources. In average, growth exceeded the fellings. Timber accounted for most of the sales, while fuel wood sales exceeded the pulpwood sales. The significance of thinning seems not be fully understood in the farms. Especially standing sales of timber was important for the economy of the farms.
The PDF includes a summary in German.
Stones can be removed in drain digging of peatlands by using explosives or hoisting devices. The report is based on observations, and time and motion studies on drainage sites in the state forests in Northern Finland in 1931‒1933. Dynamite has been previously the most common explosive used in drainage sites. The new explosives containing potassium chloride proved to be cheaper, and safer to handle and transport than dynamite. According to the time and motion studies, the use of hoisting devices to lift stones that are removable, was significantly cheaper than explosives.
The PDF includes a summary in English.
The shape of land lots formed in parceling of land has been affected by many variables. It is an important economic factor when the land is used in forestry or agriculture. The report concentrates on the larger farms with relatively large forest holdings. In the general parceling of the land that started in the middle of 1700s, the allotted plots were often long and narrow, and the width of the plot could be 20‒50 meters. Later these farms may have been further parceled.
Narrow plots are difficult to manage from the forestry point of view. For example, it is not possible to build a forest road in the plot, and wood harvesting is difficult. To use natural regeneration for a specific tree species is impossible, because the seed trees in the adjacent plot are so near. When the boundaries are long and the properties narrow, there is bigger risk for felling trees on the land of the neighbour. The optimal form for a plot is rectangle which is 3‒6 times longer than its width. Local examples of parceling and the effects of the shape of the plots are given in the article.
The PDF includes a summary in German.
The need for standard Finnish names for the harmful or beneficial insects in agriculture rose in the 1930s, and a committee was formed in 1932 to work out nomenclature for the insect species. In 1933, a similar committee was formed to compile a nomenclature for forest insects. The old popular names, if such names existed, were used primarily. Some of the insects had been named also in the earlier literature, even if all the names had not been taken in common use. Some names were translated from the scientific names. Emphasis was given to the habits or habitats of the insect. An attempt was made to shorten the former names if needed.
The PDF includes a summary in English.
The article is a report of the ways the state forests could be used to improve employment, requested by the State Unemployment Council. Production of the state forests of Finland has been insufficient, because the fellings have not taken account silvicultural needs, and forest management has not previously received proper funding. For instance, the production and wood resources in Scots pine (Pinus sylvestris L.) dominated forests in Southern Finland were 2/3 of what they could be if the forests were in natural state. More efficient forest management is necessary to ensure the sustainable wood production of the state forests, and that could consequently offer work opportunities. The tasks needed to improve productivity of the state forests, and the work opportunities they can give are listed. Silviculture, drainage of peatlands, wood harvesting and transport, marking timber for fellings, floating, building forest roads and administrative and planning work could increase the supply of work to 8.6 million man-days and 1.6 horse-days in the state forests, mainly in wood harvesting and transport.
The PDF includes a summary in German.
The article is a review on the research about forest regeneration in Finland, executed in the Forest Research Institute. The climate affects the results of different regeneration methods. Thus, sample plots have been established in different parts of the country. In 1933 there was a total of 386 sample plots around the country. To compare the effect of weather conditions in the regeneration, sample plots have been established in successive years. Other conditions that affect forest regeneration are soil, forest site type, tree species, time from the felling of the stand, and tending of the seedling stand. Of the 386 sample plots 245 were planting experiments and 141 sowing experiments.
The PDF includes a summary in German.
The term ‘expenses’ is in forestry insufficiently defined, and its use in the balance sheet of forest management is unclear. In dynamic balance theory the actual working expenses and capital expenditure are separated. The article discusses what should be considered working expenses and what capital expenditure when dealing with certain costs of the forest management, for example costs of administration, cultivation of forests, log-floating channels, and roads and drainage of peatlands.
The PDF includes a summary in English.
The relation between the occurrence of forest site types and swamp types was studied using data collected in the national line survey of Finnish forests carried out in 1921‒1924. The majority of peatlands in Finland has been formed by forest land becoming paludificated. When the peat layer is thin, the fertility of the peatland depends on the underlying mineral soil, consequently, good swamp types occur on fertile subsoil and poor types on poor subsoil. When the peat layer becomes thicker, the relationship weakens. The surrounding mineral soils influence the quality of the peatland by the runoff from the catchment area. The direct comparison of forest site and swamp types is not possible, because for one forest site type there are several swamp types that have different levels of humidity. According to the study, a very distinct mutual relation can be seen between occurrence of forest site types and swamp types.
The PDF includes a summary in English.
The article is a review on the forest resources, forestry and forest policy in the United States based on the publication A National Plan for American Forestry, published in 1933. The earlier estimates of forest resources of America have been proved to be exaggerated. The annual drain had been estimated to be twice the annual growth of the forests. The author disagrees with the estimates, and argues that the growth, if calculated with the American method, do not give right figures of the sustainable fellings.
The situation is better than estimated. The national plan of forestry suggests that the public ownership of the forests should be increased to 60% from the present 20%. In addition, there are plans to introduce public control of private forests in the American forestry so that fellings do not risk the sustained yield of the forests. Rapid depletion of the saw timber resources in the North-Eastern and Lake States, and the high lumber prices lead to the assumption that the timber resources of the United States are in decline. The following decrease in lumber consumption lead to surplus of sawmill capacity, and to increasing competition in the sector.
The PDF includes a summary in English.
Following the example of Norway, which was the first nation to employ regular troops in silvicultural work, sowing and planting courses were organized for the Finnish troops in 1931. The initiative was taken by the Forestry Instruction Bureau, and the work was organized by the forestry committees. During three years, total of 8,189 men was involved in the work.
The PDF includes a summary in English.
The article outlines the further development of forest research work in Finland. It was realized from the beginning that forest sciences in Finland should be grounded on own work, relying on other sciences that had similar objectives. For instance, silvicultural sciences can benefit from phytogeography, plant ecology and soil sciences.
The Finnish Society of Forest Sciences was established in 1908 to promote forest research in the country. It was deemed that the progress of Finnish forestry required forest research adapted to the local conditions. The article describes the establishment, first years of the society and the consolidation of its role and activities. The operation, finances and the society is described.
The PDF includes a summary in German.
The main source of data was the official industrial statistics in 1911‒1929. The data was complemented with information from other sources, and the figures converted to solid volumes under bark. The wood consumption of wood manufacturing industry in the period varied strongly, being lowest in 1918 (2.2 million m3) and highest in 1927 (18.1 million m3). The wood consumption dropped during the World War I.
The wood manufacturing industry in Finland concentrated on sawmilling industry which has used annually 70‒80% of the wood consumed in the whole wood manufacturing industry. Other sectors of industry using wood were plywood industry, wood-wool industry, spool factories, match industry, mechanical pulpwood industry and pulp industry.
The PDF includes a summary in German.
The article includes the minutes of the Finnish Society of Forest Sciences in 1920‒1930. In the meetings of the society were held 108 presentations, which are included in the article. The topics of the presentations are listed by the name of the speakers and by the topics.
The article analyses the efficiency of forest work, and the use of time and motion study methods in forest work. Forest work can be characterized by little use of machinery. It cannot be repeated as orderly as industrial work. This affects also how the efficiency of the work can be measured. Only parts of the work can be timed. The study takes making of piled wood as an example. First are determined the standard times for the work moments. They include the time used to prepare the piled wood, and the waste time. It is concluded that forest work can be standardized with the methods of work analysis.
The PDF includes a summary in English.
Earlier research has presented contradictory results of the influence of forest site type on the weight of wood. In this study, dominant trees of Scots pine (Pinus sylvestris L.) was chosen as sample trees on four forest site types: Calluna, Vaccinium, Myrtillus and Oxalis site types. The trees were felled in autumn, when the water content of the wood is low. Weight of the test samples was measured weigh before and after drying. Undried wood, both sapwood and heartwood, is heavier in Myrtillus type than in Vaccinium type. The weight of the air-dried heartwood did not differ between the two forest site types. Air-dried- sapwood was heaviest in Myrtillus site type. Air-dried heartwood was heaviest in Vaccinium site type, and lightest in Oxalis type. Owen-dried sapwood was heaviest in Calluna site type, where the tree growth is slow, but weight differences were small in owen-dried heartwood. It can be claimed that forest type affects wood quality.
The PDF includes a summary in English.
The abundance of Norway spruce (Picae abies (L.) H. Karst.) undergrowth is common for the state forests in Karelia near the Russian border, in Finland. In the survey, the occurrence of the undergrowth was studied. The article includes a review on the ownership of the forest, forest soils in the area, and the state of forests in the area. Scots pine (Pinus sylvestris L.) is the dominative species in 67%, Norway spruce in 27% and Betula sp. 6% of the state forests. Only 2% of the forests are 1‒20 years of age. Stands in the age group of 61‒80 years are the most common (25%). Norway spruce undergrowth is most abundant in the municipality of Salmi. The forests are typically moist forest site types or grass-herb site types. If the stands are allowed to develop naturally, even the Vaccinium sites become Norway spruce dominated. Spruce undergrowth is formed seldom under a spruce forest unless the stand is thin or has openings. Because Norway spruce is often rare in the mineral soil sites, the undergrowth is often regenerated from seeds that spread from spruce swamps. Earlier practiced shifting cultivation and its frequent fires prevented regeneration of spruce undergrowth. Similarly, the common felling method used, clear felling in strips, does not promote spruce undergrowth. Consequently, their occurrence is likely to decrease in the future.
The PDF includes a summary in German.
The article gives a summary of the range of the wood-technological research, and suggests that the research in the subject in Finland should be divided in two parts: research on problems of wood-technology in the strict sense of the word, and those concerning wood refinement and the problems of wood technology, related to the latter. The wood-technology research would be addressed to the Forest Research Institute, and the research on wood refinement to the organization to be founded by the wood manufacturing industry. Finally, main subjects to be studied are listed.
The volume 34 of Acta Forestalia Fennica is a jubileum publication of professor Aimo Kaarlo Cajander. The PDF includes a summary in English.
In 1926 the state of Finland payed taxes to the local municipalities from a half of the net returns the state forest and state owned wood manufacturing industry produced. The taxes payed by the forest administration to the municipalities totaled 4.75 million Finnish marks. The state forests are located mostly in Northern Finland, thus the relative amount of municipalities that get taxes from the state forestry were higher in the north. The municipalities that benefited most from the tax revenues from the state were Savukoski, Pudasjärvi, Suojärvi, Rovaniemi, Taivalkoski, Kuhmoniemi, Turtola, Pielisjärvi, Ilomantsi, Korpiselkä and Suistamo. About half of the municipalities (264) got tax revenues from state forestry. However, if this tax revenue was removed, it would raise local tax rate in relatively few municipalities. it has been proposed that state should pay taxes from the state forests on the same principles as the private forests. To move to area based taxation in the state forests would, however, increase the taxation of the state five-fold. The taxes from the state forests are not appropriate way to support the poorest municipalities. Better suited would be, for instance, state subsidies. Therefore, the taxes payed from the state forestry to municipalities should be abandoned.
The volume 34 of Acta Forestalia Fennica is a jubileum publication of professor Aimo Kaarlo Cajander. The PDF includes a summary in German.
The economy of the forestry in private farms in Southern Finland was studied based on the statistics compiled by the Board of Agriculture, and published in the series Tutkimuksia Suomen maatalouden kannattavaisuudesta (Investigations into the profitability of agriculture in Finland). The results present income, expenditure, assets, gross return, net return of the forests in the farms in 1924‒1926. The annual net return of the smallest farms (<10 ha forest land) was 884 Finnish marks and in the largest (>100 ha forest land) 48,335 Finnish marks. The location of the farm influences greatly the net return. For instance, the transport costs of timber from the forest is higher in the larger farms. To utilize the advantages of management of a large forest area requires knowledge about forestry. In addition, the fellings were higher in the small farms during the period. The net return is greater in the private forests than in the state forests located in the same region. Agriculture gave the farms larger net return than the forestry.
The volume 34 of Acta Forestalia Fennica is a jubileum publication of professor Aimo Kaarlo Cajander. The PDF includes a summary in English.
The article is a review on the history of forestry in Pekkala estate, a private woodland estate in Ruovesi in Southern Finland. The estate had 7,300 hectares of land in 1929, of which 500 hectares were agricultural lands. It was owned by the Aminoff family since 1822.
The household wood harvesting of the tenants was considered a problem until the farms of the tenants (crofters) became independent in 1921, when the farms of the tenants were parceled out from the main estate. The shifting cultivation of tenants was banned already in 1824. Demand of wood was low until 1870s. in 1865 the freeing of regulation of sawmills increased the demand of wood in Finland, and gave start to significant timber sales in Pekkala estate. The first forest officers were hired in the estate at the time. The first guidelines of forest management for the estate were compiled in 1912, and the first survey of the forests was made in 1916, and repeated in 1922 and 1926. The fellings were planned in consideration of the growth of the forests.
The volume 34 of Acta Forestalia Fennica is a jubileum publication of professor Aimo Kaarlo Cajander. The PDF includes a summary in German.
The article is a review of forest research carried out in Finland. The article includes a short review of the origins of forest research in the country and the research institutions in the country. It describes the main studies in different fields of forest research, divided on biological and silvicultural research, forest mensuration and forest policy research, and research on forest utilization. An English translation of the article was published at the same time. A need for an English summary of the forest research was realized, because the publications have mainly been written in Finnish or German.
The forest sites have typically been classified by two principles, either as stand quality classes or as locality (site) classes. This article describes the principles of Finnish forest site types (forest quality classes) which are based on classification of localities according to their forest plant associations. All the stands that belong to the same forest site type are characterized by a distinct, more or less identical plant species composition. The forest site types are independent of the tree species. The forest site types in a larger area are relatively numerous, but can be grouped according to their normal form. The Finnish forests are separated to dry moss forest class, the moist moss-forest forest class and grass-herb forest class. The different forest site types belonging to the classes are described in detail. Growth of the trees is different for the different forest site types, but varies little within a same site type. The forest site types suit therefore well for the purposes of forest mensuration and for yield tables. The forest site types reflect also the properties of the soil.
Perä-Pohjola and Lappi are situated almost entirely north of the Arctic Circle, being one of the northernmost areas, where agriculture and forestry are practiced. The state owns 87% of the land, of which 42% are productive forests. Only 0.8% of the land is agricultural land, mostly meadows. Agriculture is mainly dependent on animal husbandry. The most important agricultural crops were barley and potato. From the economic point of view, forestry is the most important industry in the area. Forestry also gives the agricultural population extra income, especially in the winter. The total population of the area was 31,488 in 1917. Development of the connections to the area is important for both agriculture and forestry.
The PDF includes a summary in English. This is a first part of four-article series on the natural resources in the area of Perä-Pohjola and Lappi.
Approximately 320,000 hectares of peatlands and paludified lands had been drained for agriculture and forestry purposes in Finland by 1920. The ditch network was not optimal in the early drained areas, and the condition of the ditches declined over time. In this study, the condition of drainage system, and the natural processes that affect them, was inspected in 18 drained peatlands.
Several processes can reduce of the size of the ditches. The process of crumbling of soil in the sides of the diches can last up to three years after the draining. Erosion of the main drains, caused by water flow can, however, continue longer. The ditches also sink when the peat dries. Soil frost can affect the ditches, but as the vegetation grows its effect gradually decreases. The vegetation that grows in the ditches may finally block the ditch completely.
The PDF includes a summary in English.
The study is based chiefly on statistics of forest fires in the state forests in 1911-1921, published in the annual reports of Board of Forests (now Metsähallitus, Forest Service). Forest fires burned 37,200 hectares of forests in the state forests in 1911-1921. In Southern Finland the number of fires was 795 and in the Northern Finland 610. The frequency of forest fires is higher in south because of the denser population in the area. The average forest fire ranged 118 hectares in Southern Finland and 39 hectares in the north. Fires broke out most often because of careless use of fire. Weather conditions and the type of the forests influenced the risk of fire. In the north, risk for forest fire is lower because of the high proportion of peatlands. Only 14% of the fires burn the trees of the stand. In Southern Finland 50% of the fires and in Northern Finland 42% of the fires damage only part of the stand. Rest of the fires were surface fires that do not burn the trees. The value of damages by forest fires in the state forests in 1901-1922 was annually in average 139,400 Finnish marks.
The PDF includes a summary in English.
A strip survey was performed in the counties of Sahalahti and Kuhmalahti in Häme, situated in Central Finland, to study the condition of the private forests. The forests cover 78% of the total land area of 37,420 hectares. The forest site types were relatively fertile. Scots pine (Pinus sylvestris L.) dominated forest covered 43%, Norway spruce (Picea abies (L.) H. Karst.) 30% and Betula sp. 23% of the forest land. The productivity of the forests could be improved by changing the species so that they suit the site. The volume of the standing crop is 67.2 m3 per hectare. The volume of the growing stock in the area could be 1 million m3 larger if the forests were nearer to the natural state. The annual growth of the forests is low, and could be much improved by correct forest management.
One of the aims of the survey was to study how the distance between survey lines should be adjusted to give acceptably accurate results, in a way that the strip-survey method can be adapted to large areas. The largest distance between the lines that gave results that differed less than 10% from the correct results, varied between 10 and 1.5 kilometres depending on the variables. For instance, to get accurate results for the rarest forest site types required line distance of 1.5 kilometres, but accurate results for the most common forest site types could be achieves with line distance of 10 kilometres.
The PDF includes a summary in German.
Work in the forestry, for instance, in logging operation during winter, has been important source of employment for the rural population in Finland. The study is based on statistics of forest work, felling, felled timber, workforce and horses used in the forest work in the state forests, published in the annual reports of Metsähallitus (Forest Service) in 1911-1913. The administrative and silvicultural work, for instance, sowing and planting, clearing of the felling area, building forest roads or work in the nurseries, range from 20% to 22% of all work done in the forestry. Major part of the work time is used in felling. To harvest one cubic meter of timber requires 0.3 man-days and 0.2 horse-days. The work is seasonal; felling work is available for about 90-100 days a year. Forest haulage is possible only in the winter, and for instance sowing and planting in the summer. The employees have secondary jobs in agriculture and in other sectors.
The PDF includes a summary in German.
The article is a detailed review on the problems in the general parceling out of land (isojako) in Kuusamo, Kemijärvi and Kuolanjärvi counties from the context of forest policy. The disputes about division of the land originate from military tenure contracts (knihtikohtrahti) made with the local tenants in 1700s. Later some counties got alleviations in the contracts concerning taxation and partition of land. These alleviations delayed the parceling out of land in the area. According to the article, from the forest policy point of view, the inhabitants in Kuusamo, Kemijärvi and Kuolanjärvi were conveyed disproportionately large forest properties from the state due to the military tenure contracts. This gave them undue benefits from the state compared to the neighbouring counties.
The PDF includes a summary in German.
The vegetation of the forest and peatland site types in Northern Finland differ markedly from those in Southern Finland, also the vegetation of the subtypes in the north is distinctive. A line survey was conducted to study the distribution of forest and peatland site subtypes in Northern Finland.
The vegetation of rich grass-herb forest types differs little from the poorer grass-herb forest types in Northern Finland. They abundance decrease towards north. The main fresh mineral soil sites are Myrtillus site type, Hylocomnium-Myrtillus site type and their paludified forms. The abundance of the fresh mineral soil sites decreased towards north so that in Kemi the proportion was 20.5 and in Lapland 12.0%. A transition from the fresh to the drier site types is gradual. The Vaccinium site type that is dominant in the south, is rare in the north, where it is replaced by Empetrum-Vaccinium type. The proportion of dry forest sites increase towards north, in average their distribution is 25% of the lands. There are numerous subtypes, which can be merged in to four main site types: Calluna, Cladina-Calluna, Myrtillus-Cladina and Cladina site type. The peatlands are more abundant in the southern part of the study area. The most common peatland types are pine swamps.
The PDF includes a summary in German.
The timber companies began acquiring forest land in 1890s which raised concerns about decrease of the number of private farms and agricultural land, as had happened in Sweden earlier. This was not considered to be a major problem in Finland, but the sale of homesteads on former state lands for sawmill companies was considered to be against their objective. One reason for the sale of farms was the farmers’ poor conception of the value of the land. In 1915 three decrees that restricted the right of companies that use timber to buy land were approved. The article discusses in detail the arguments that led to the legislation and compares it to the situation in Sweden.
A survey was commissioned to study the of landholdings of the companies, and to compare it with farming in private and company owned farms. The article includes a study about individual farms in the municipalities of Multia, Heinävesi, Sulkava, Ruokolahti and Luumäki, and about land use in the areas.
The PDF includes a summary in German.
About 60%, 20.5 million hectares, of Finland is covered by forests. Of this area 10.5 million hectares are peatlands. The forests are divided in fertile forest land (17 million hectares), forest land of low productivity (3.5 million hectares) and nonproductive lands (about 10 million hectares). Scots pine (Pinus sylvestris L.) is the dominant species in 60%, Norway spruce (Picea abies (L.) H. Karst.) in 23%, and Betulasp. 17% of the forests. The younger age classes are poorly represented, but despite the abundance of older age classes, the growing stock and productivity of the forests are not very high. The reason is low density of the forests, unfavorable tree species composition and the condition of the forests. Timber is used as household timber in towns and in rural areas (16.5 million m3), in traffic (1.3 million m3), fuelwood in industry (3 million m3), raw material in wood industry (9.1 million m3) and export (4 million m3). State owns 36.9% of forest lands, companies and associations 8.1% and other private forest owners 53.5%. The article describes the administration of state and private forests, and forest education in Finland. There was about 600 sawmills, 25 mechanical pulpwood mills, 24 pulp mills and 31 paper mills in the country in 1920.
The income of forestry in the state lands was 136 million Finnish marks, expenditure 65 million Finnish marks and the result 71 million Finnish marks in 1920. Both the income and expenditure had steadily increased during the 1900s. The forests in state lands are poorer than the forests in the country in average, which affects the profitability of forestry. However, ways to improve the profitability could be found. These include better transport connections, especially floating in Northern Finland. The growth of the forest could be increased by forest improvement, for instance peatland draining. The local demand of wood could be improved by selling rights to harvest household wood.
This study was conducted for the request of state forest committee. The aim was to study the economic situation of tenants of state lands in Kuru, Parkano and Ikaalinen, situated in Central Finland. The chosen 30 farms were located in relatively remote parts of the state forests in the area. Half of the farms were established already in 1800-1860 for shifting cultivation or fishing, and the land was not always suited for farming. The state forests were in general on the poorest lands of the areas. They were relatively small; third of them had less than 2 hectares of agricultural land. Household timber harvesting required a permission from a local forest officer of Metsähallitus (Forest Service). The legal rights of the tenants were fairly secured, but many wished to get right to purchase the farm land. Due to the poor lands and insufficient fertilizing, the crops were lower than in small farms in average. The forests around the farms were mixed forests of poor quality, due to the wood utilization of the tenants.
The PDF includes a summary in German.
The first proper growth and yield tables were prepared in Finland already in 1872, but they have been used little as the needs of forestry and forest sciences increased. One of the problems of the old yield tables was how the site quality classes are determined. The new growth and yield tables use the forest site type classification, which enables the use of same site types for all tree species. This makes it possible to compare the growth of different tree species in same kind of sites. The tables also use stem frequency distribution series. In the first stage, the tables were prepared for Southern and Central Finland.
The PDF includes a summary in German.
New growth and yield tables were prepared for Southern Finland. To finalize the tables, it had to be determined whether the forest site types developed by Cajanus could be used in mensurational research.
Comparative study was performed in 1916-1919 to study the growth of the trees in different forest site types. Total of 467 sample sites were measured in Southern and Central Finland. All the forest site types were found to have a distinctive vegetation typical to the site. It can be concluded that the ground vegetation can be used to determine the forest site type. The growth of trees was different in different forest site types, yet similar within each site type. The forest site types are uniform, natural and easy to determine, and can thus be used to classify the forest stands and used in mensurational research and a basis to growth and yield tables.
The PDF includes a summary in German.
Annual variations in wood utilization makes it complicated to estimate the balance between wood utilization and wood production of forests. According to the article, the balance is unsustainable especially in the private forests in the southern part of Finland. The annual wood utilization of the country was 37.3 million m3 in 1913, and the annual wood production 35.2 million m3, according to a report of a committee that was appointed to find methods to prevent overcutting. The committee suggested legislation to forbid forest devastation. Also the growth of the forests could be increased, if the forests are well managed, the article argues. To prove this, the potential wood production capacity is estimated for the municipalities of Viipuri, Mikkeli and Kuopio, and compared to the present wood production and wood utilization of the area.
The PDF includes a German summary.
The article includes the minutes of the Finnish Society of Forest Sciences in 1917-1920. In the meetings of the society were held 39 presentations which are included in the article.
The PDF includes a German summary.
The forest site classification system used in Finland is based on ground vegetation rather than the wood production capacity. A. K. Cajander has presented a detailed classification of different forest site classes in different parts of the country. This study focuses on the forest site types of Northern Finland, which are less well defined. The article presents detailed vegetation analysis and lists of plant species in different forest site types in Northern Finland. In contrast to southern parts of Finland, both the natural Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst) stands are uneven-aged in the north. The forests are also relatively thin. There is a marked difference in height of trees between the richest and poorest sites, but the dominant trees of the same site type were of similar height both in the north and south part of the study area. The differences in the height of dominant trees seem to be smaller than in Southern Finland. Also, in windy areas prone to snow damage, climate conditions can affect tree growth more than the forest site type. In more sheltered areas forest site type determines forest growth.
The PDF includes a summary in German.
The forest ownership of companies had been criticized which led in 1913 to legislation that restricted land purchases of the companies. The aim of the survey was to study the condition of forests in five municipalities in Southern and Central Finland, where landholding of the industry was most common. The companies owned 13-33%, private forest owners 45-83% and the state 1-22% of the forests in the studied municipalities. The forest holdings of the private owners were the smallest, while the companies owned larger estates. The forest site types did not differ markedly between the two owner groups. The dominant tree species in all municipalities was Scots pine (Pinus sylvestris L.). The age-classes varied in the forests of both owner groups, but in private forests the younger age-classes were more common, mostly due to shifting cultivation practiced in the previous decades. The wood volume of the stands was significantly larger in the forests of companies. The stands were of poorer quality in the private forest due to selection fellings. Forest regeneration was more usual in the company forests.
The text is included in Finnish, Swedish and German.
The article describes a method to prepare growth and yield tables for forests in Northern Finland, which differ markedly from forests in the southern part of the land. They are mostly uneven-aged, and there are little forests that belong to separate age-classes. The forests are predominantly old. The most common age-class in the old forest’s group is 150-160 years. Also, the lands are poorer than in Southern Finland. Because the variation of the poorer sites is larger than in better sites, the number of sample plots needed to prepare the growth and yield tables has to be larger than in Southern Finland, where the lands are better. The yield tables cannot be prepared for all the numerous forest site types of Northern Finland. The number of age-classes has to be relatively low. In consequence, the growth and yield tables will not be as accurate as those made for the better forest site types in Southern Finland.
The article is a review on the lands that were donated to the Russian aristocracy in Eastern and Southeastern Finland in 1700s. The farmers in the area used to be tenants of state lands or independent land owners. The insufficient and diverse stipulation of the ownership of the lands in the donation documents caused later disputes between the landlords and the farmers. One of the issues was who had right to use the forests. For the farmers this meant significant reductions in their right to harvest timber and household wood, or practice shifting cultivation. There were attempts to improve the situation of the tenants, but the final solution came in the end of 1800s, when the parliament began to promote farmers’ right to purchase the lands. In the land reform, the state raised a loan to purchase the donated lands, and give them to the farmers, who would then pay back their share of the loan. Part of the forests remained state lands in the reform. Several jointly owned forests were also established using the state forests to give access to household wood for farms that had little own forests. The private forests on donated lands had larger standing crop than the private forests in general. Together with increasing demand of wood for the developing manufacturing industry, this gave possibility for abusive practices in timber trade. The timber prices were low, and farmers exchanged felling rights to loan.
The sixth part of the six-article series about protection forest in the Northern Finland is a review of the population and villages situated in the Scots pine (Pinus sylvestris L.) timber line area, and how private use of wood can be coordinated with the protection of pine timber line. Both the preservation of forests and the use of the forest as the source of timber and fuel wood in the timber line area are essential for the local communities, especially because in the area there is are few livelihoods. The article includes a proposal for a decree for new settlements in the northern protection forest area.
The article is divided in six parts. A German summary is in a separate PDF.
The fifth part of the six-article series about protection forest in Northern Finland outlines sustainable forest management practices for the Scots pine (Pinus sylvestris L.) forests in the pine timber line area. The author stresses the need to secure the seed production and regeneration capacity of the forests, and the growth and protection of seedlings. At the same time, the local communities’ need for timber has to be taken into account when considering the means to protect the pine forests. The main principle is not to cut more trees than has been regenerated during the time period between good seed years. The article outlines good forest management practices for the timber line area.
The article is divided in six parts. A German summary is in a separate PDF.
This fourth part of the six-article series about protection forest in the Northern Finland is a proposal for organizing reindeer grazing to enable scots pine (Pinus sylvestris L.) regeneration near the timber line. Protection forests in the Northern Finland cover third of the natural pastures of reindeer in the area. In these areas reindeer grazing can harm the young pine seedlings. The proposal suggests temporary restrictions in grazing in the coniferous forests. Also, in the northernmost parts of Lapland the pine timberline area would be used only as winter pastures. Regional limits should be set for the number of reindeer. Also the ownership of reindeer herds and herding coopearatives included problematic issues that should be solved.
The article is divided in six parts. A German summary is in a separate PDF.
The third part of the six-article series about protection forest in Northern Finland describes prevention of forest fires in the pine timber line area. The article gives a proposal for a forest fire decree. According to the proposal, lighting a campfire should be prohibited in dry and windy times. Vegetation should be cleared around a campfire in the summertime. The local people should be obliged to help to extinguish any forest fire, and given compensation for the work. The compensation would be claimed from the person who lit the fire, if that is known. A fine is collected if forest fire breaks out by negligence.
The article is divided in six parts. The parts II and III of the article series are included in the same PDF. A German summary is in a separate PDF.
The second part of the six-article series about protection forest in Northern Finland outlines the principles of protecting Scots pine (Pinus sylvestris L.) timber line. The protected areas should include at least all of the viable pine stands and those birch (Betula sp.) lands that are necessary to safeguard fuel wood supply in the pine forest zone. Outside the actual pine forest zone also those birch stands that are near populated regions should be protected to secure sustainable fuel wood supply. Third, south and down of the pine forest zone should be protected pine forest stands and adjacent open fell areas where forests are especially vulnerable. A new protection forest commission should be established to execute the protection forest legislation.
The article is divided in six parts. The parts II and III of the article series are included in the same PDF. A German summary is in a separate PDF.
The article aims to give a proposal on how to organize a protection forest system to protect the pine timber line in the northernmost Finland. In this first part of the six-article series is described the range and biology of Scots pine (Pinus sylvestris L.) in the timber line area, and human actions influencing the species in the area. The southward shift of Scots pine timber line cannot be explained by change of climate. The main factors are too intensive fellings, reindeer husbandry and forest fires. The poor reproduction of pine in Lapland makes it vulnerable to disturbances. The trees produce viable seeds in average only every 100 years. Thus, effective measures are needed to protect the existing pine forests in the area.
The article is divided in six parts. A German summary is in a separate PDF.
A strip survey was made to define the forest and peatland site class distribution and the condition of the forests in Savo and Karelia in central and eastern parts of Finland. According to the survey, 24% of the forested lands are peatlands. Fresh mineral soil sites (26%) were the most common mineral soil site type. Intermediately dry forest soil sites covered 22% of the area, forest sites with grass-herb vegetation 12,79%, rich grass-herb forest soil sites 3,16% and dry forest soil sites 9,59% of the forested area. The most common tree species were Scots pine (Pinus sylvestris L.), 39%, Betula sp., 26%, Norway spruce (Picea abies (L.) H. Karst.), 18%, and grey alder (Alnus incana (L.) Moench), 10% of the forest land. The article includes a review about the wood harvesting in the forests, and their present silvicultural state. According to the study, about 30% of the forested lands (not including peatlands) were unproductive; mostly mixed alder and birch stands of poor quality or open lands.
The PDF includes a summary in German.
The article presents a survey on distribution of fertile lands, soil types and site classes in Savo and Karelia in the central and eastern parts of Finland. The survey was based both in existing publications and statistics, a line survey, and visual observations during field trips. The site quality classification is based on the vegetation and occurrence of indicator plant species. The article lists distribution of indicator species in different forest site types on maps of the area. In addition, a review of history of land use and agriculture give indications of the location of the fertile lands in the area. A map of the forest site types in different parts of the area illustrate the data collected from the different sources.
The PDF includes a summary in German.
The Finnish Society of Forest Research was established in 1909 to promote research in forest and wood science in Finland. This article contains the minutes of the meetings of the society in 1909-1917, which could not be published earlier due to lack of funding. The minutes include also part of the presentations held in the meetings, 97 in all. Some of the presentations have been published elsewhere, and they are not included in the article.
The article is a review on shifting cultivation, its methods and use in Finland, and its effect on the condition of forests. Shifting cultivation decreases forest reserves not only by burning large amounts of wood. Of the area used for shifting cultivation, 10-50% can be open land. The older age classes of forests are often missing, and range of tree species shift towards deciduous trees. This causes lack of large timber. The shorter the rotation, the less well the most valuable trees survive on the area. One reason is lack of seed trees. Of the coniferous trees, Scots pine (Pinus sylvestris L.) is able to survive in the burnt-over lands better than Norway spruce (Picea abies (L.) H. Karst.), because it can produce seeds at a relatively young age. Betula sp. and especially grey alder (Alnus incana (L.) Moench) regenerate well on burnt-over lands. Also the frequency of good seed years determine which tree species become the dominant species on a burnt-over site.
When shifting cultivation is abandoned, deciduous trees keep their advantage over coniferous trees, because the wood of coniferous trees is used more in the surrounding villages. Pine and spruce spread to the burnt-over areas from the poorer sites that often had remained unburned. In densely populated areas in some counties in Savo in eastern Finland, where shifting cultivation was practiced intensively, Norway spruce became rare. Dominant tree species in the burnt-over areas became birch and pine.
The article is divided in two parts. A German summary is included in a separate PDFThe field of work of the 7th National Forest Inventory was carried out during 1977–84. This report consists of the analysis of the forest resources, long-term development of forests and the results by ownership categories in Finland.
The area of forestry land, 26.4 million ha, has decreased slightly because of the increase of build-up areas and communication routes. Forest land, which is suitable to growing wood profitably, amounted 20.1 million ha. It has increased, although not as fast as earlier, due to drainage and fertilization of scrub and waste land swamps and the afforestation of agricultural land.
The growing stock volume was 1,660 million m3 and the estimated gross annual increment 68.4 million m3. A large quantity of young, rapidly growing stands, and fellings markedly below the increment, are the principal factors increasing the growing stock. The volume of Scots pine (Pinus sylvestris L.) has increased most but the greatest proportional increase has been in the volume of broadleaved trees.
The silvicultural quality of stands has improved and the increase in saw log tree volume has resulted in an increase in the total growing stock volume. The proportional volume of saw logs, however, has decreased. Both aging mature stands and postponed thinnings increase the risk of losses due to mortality and decay. Too dense stands retard the diameter growth of trees. The proportion of unsuccessful artificial regeneration has increased.
The area of private forests has slightly decreased, while companies and collective bodies have increased their ownership. Non-farmer private ownership already accounts for one half of the area of private forests. The silvicultural quality of company forests is best and the increase of the growing stock and its increment is proportionally greatest in these forests.
The PDF includes a summary in English.
The study analyses Finnish academic dissertations in forestry sciences on the basis of number published and yearly trends, length, topic, sources of funding and guidance, and the doctoral candidates’ background and career development before and after disputation.
From 1912–1984, 131 dissertations in forest sciences were published. The majority of them were written in Finnish. The length averaged 151 pages. In general, the more rapidly the dissertation was prepared, the better grade it received.
The majority of doctors in forest sciences come from well-to-do families, in cities located in Southern Finland. They constitute 2–6% of the total number of graduating foresters. At the time of disputation their average age has been 36 years. Doctors have used job changes to improve their position in the hierarchy of their employing institutions.
The PDF includes a summary in English.
An extensive field-based survey was conducted to establish the distribution of site types on drained peatlands, the condition of the drainage networks, the post-drainage development of the tree stands, their structure and silvicultural condition and the corresponding requirements for operational measures. The data is based on sampling of the forest drainage undertaking during 1930–78 and consists of 1,312 km inventory transect, 6,030 relascope sample plots and 21,700 studied ditches.
Of the studied peatlands more than 60% were Scots pine (Pinus sylvestris L.) mires, slightly under 20% Norway spruce (Picea abies) mires, and under 10% each treeless mires and paludified upland forest sites. The remaining peatland area that is to be considered suitable for forest drainage according to criteria used by Heikurainen (1960) now consists mainly of spruce mires and paludified upland forest types; about 1 million ha both groups still remain undrained.
The proportion of ditches in need of ditch cleaning was estimated to be under 10% in the youngest drained areas and under 30% in the oldest. The mean tree stand volumes of the drained peatlands of different site types show the same dependence on the trophic level as in earlier studies but the volumes seem to be some 5–10% lower. These results compare favourably with those of the 7th national forest inventory.
Trends in the post-drainage development of tree stand volumes and increment are also, generally, in accordance with earlier findings but have somewhat lower values. The development of the nutrient-poor site type stands, especially in Northern Finland, seems to be significantly poorer than was earlier assumed.
The PDF includes a summary in English.
The 75th Anniversary volume of the Society of Forestry in Finland (now the Finnish Society of Forest Science) consists of three invited papers.
Professor Viljo Holopainen contributed the article ”The Society of Forestry in Finland during the period of active science and forest policy”. The article gives an account of the founding of the Society and its early activities, and views the main trends in the development of forest science in Finland. The emphasis is on a review of the science policy practiced in Finland during the past few decades, the changes that have taken place in forestry and forest policy and the challenges facing forest research in the changed circumstances. The development in the organization and material resources of forest research is examined in relation to the general trends in science policy. The author also gives an extensive account of the Society’s activities.
Professor Aarne Nyyssönen’s article ”International connections of Finnish forestry research” is an account of the international connections that forestry research in Finland has had in recent years. The author begins with international cooperation in university level education, especially in research training. He then proceeds to examine the international organizations in the field of forestry research, their tasks, activities and the role of Finnish researchers in them. A special form of cooperation, based on bilateral agreements between Finland and other countries is brought up. The greatest importance is attached to Nordic cooperation.
Professor N.A. Osara studies the comprehensive question ”World forestry: some trends and prospects”. The article begins with a review of forest resources, which points out several alarming problems in the tropical and subtropical zones as well as in industrialized countries. Prospects for expansion in the consumption of wood and wood-based products, industry and trade are studied in relation to wood availability and renewable forest resources. The author concludes that forestry can contribute to the improvement of rural conditions all over the world. He also stresses the importance of forest management not only for wood production but also for soil and water management.
The PDF includes a summary in English.
This study examines the extent, structure and development of the publishing activity of Finnish forest sciences between 1909–1978. The subject comprises the four main forestry series; Acta Forestalia Fennica, Silva Fennica, Communicationes Forestales Fenniae and Folia Forestalia. Collectively, 532 authors produced 1,715 publications containing 90,134 pages.
The total number of pages of forest science publications doubled every 25 years. Only a small number of short research reports (few pages) and long monographs (over 200 pages) were published. The median age class of the authors was 36–40 years. The so called Lotka’s law, which describes the productivity of the researchers, proved to be valid in forest sciences. According to this law, among other things, one tenth of the researchers produced approximately half of all publications. Despite changes, the structure of the publisher community remained roughly constant. Every year approximately 30% of the author community was composed of new members, whilst 19–26% of authors stopped publishing.
Two approaches were applied in measuring the scenic value of forest landscapes. In the field, the scenic value of forest lands representing clear cut areas, as well as young closed stands and mature stands with varying tree species composition, were assessed. In the laboratory, the scenic value of the same stands was measured with the help of photographs of the same stand. The same persons representing forest students (36 persons) and city dwellers (25 persons) made the evaluation.
Stands of moderate density containing individual tall trees and a coniferous undergrowth had the greatest scenic value, independently of the tree species composition. However, birch was preferred to Scots pine and Norway spruce. Measurements made in the field by means of interviews, and in the laboratory based on photographs, gave very similar results. Photographs seem to represent a reliable tool for estimating the scenic value of forest landscapes.
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The Forest Financing Committee played an important role in Finnish Forestry in the 1960's. This voluntary working group prepared three plans for financing basic forest improvement work from 1965 to 1975.
The report describes the origin of the MERA I (1965–70) and the volunteer work of the Forestry Financing (MERA) Committee in preparing the second and third programmes (1966–75). It deals the initiative of the Committee aiming to finance forest improvement works also from international sources, resulted later on to the Forest Improvement Project (1973–76). Its costs were covered for 16% by the International Bank for Reconstruction and Development in form of a State Loan. The report includes comments about the forest policy in Finland during the 60s and 70s as well as the results of the programmes.
The PDF includes a summary in Finnish and Swedish.
The paper concerns the estimation of the increment of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) stands in the southern half of Finland. For the methods based on stand tables, tree functions forecasting the annual increment of diameter and height during the next 5-year period are presented. The main results of the study, however, are the functions for the volume increment percentage of pine and spruce stands. The independent variables are: forest site type, tree species, stand age and volume, and mean diameter. The standard error of estimate is about 17% in the best functions. Calculations were made also with regard to the application of the results in growth estimation of large forest areas.
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The purpose of the study was to produce information which is needed when planning the influencing the timber sales propensity of private forest owners. The study deals with the relations between communication behaviour and cutting behaviour as well as the attitudes and norms connected with them. On the basis of the results of this study, the choice of psychodynamic model can be recommended as a main strategy of influencing the timber sales propensity of forest owners. The paper gives the information basis for the choice of channels and messages of influencing.
The PDF includes a summary in English.
The Oulanka National Park is situated in the district of Kuusamo on the eastern border of Finland, close to the Arctic Circle and within the coniferous forest zone. It covers a surface area of 107 km2, and is known for the richness of its vegetation and flora, a product of a varied bedrock pattern including occurrences of dolomite. A description is given of the vegetation of the 9 forest and 47 peatland types distinguishable in the area by means of tables based on quadrat surveys. The distribution of each forest and peatland type is described in a vegetation map. The vegetation types are discussed in terms of the structure of their soil and the ecological and floristic features of their plant cover.
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The aim of this paper was to study the nature of the relative areal differences in the Finnish forests in respect of timber yield, intensity of exploitation and stumpage prices. The yield index is the most inconsistent and the source of the greatest regional differences. The differences arise even in Southern Finland, as the yield in the South-West is only 80 % of that obtained in Eastern Häme. The areal variations in the wastage index are of the order of only 10 % at most, and the stumpage price index is relatively constant, remaining within the 10 % limit, as far north as the southern boundary of the province of Oulu.
Indices for the forest yield and final forest returns suggest that the further one goes in Finland the greater the discrepancy between the two, as a consequence of the increase in stumpage price differences. Thus, whereas the yield per hectare in North-Eastern Finland is about 20 % of that in Eastern Häme, the stumpage price is similarly only just over 50 % of that prevailing in the latter area. This, the resulting returns per hectare are only 10 % of those obtainable in the more southerly area. When the return per hectare for the Forestry Board District of Eastern Häme is represented by the index 100, one then obtains corresponding return indices of 21.0 for the Northern Ostrobothnia and Kainuu area, 13.0 for Lapland and 10.0 for North-Eastern Finland. Thus, it may be said that roughly 10 hectares of forest land in Lapland, 5 in Northern Ostrobothnia or Kainuu, or 2 in Northern Karelia or the coastal area of southern and central Ostrobothnia would be required to produce the same returns as 1 hectare in Eastern Häme. This represents an extremely wide range of variation within the borders of one country.
This work provides a clear and sufficiently accurate impression of the order of magnitude of the areal differences in returns from the Finnish forests, and may thus serve as an adequate basis for the taking of decisions in this field.
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The aim of the present study was to describe the forest types of Finnish mineral forest lands as a uniform whole in the light of stand development and wood production.
The study shows that it has been possible to work out uniform age-based development series for different stand characteristics for forest types on mineral forest lands in Finland. There is generally a clear difference in the development series of various stand characteristics and their average values between different forest types. The exceptions in a few places have been explained as depending on certain factors. The differences between adjacent forest types in order of their quality are of varying magnitude, thus differing from a schematic site quality classification obtained through calculation. Consequently, each forest type has its own development series with regard to the stand characteristics.
The number of forest types in the whole country is rather high. However, the different forest types are limited to different parts cf the country in such a way that there is no need for more than 5–6 forest types and 4 northerly sub-forms (-types) in each region, except in the border areas between the regions. In Finland the forest types have been the basis of forest site classification in forest research and practical forestry over a period of half a century. In pointing out the necessity of further study of forest types, Cajander has stressed the examination of differences in the compositions of vegetation between different classes of density of tree-stand and building up average descriptions of vegetation in such classes in young, middle-age and old stands. The same may be caused by some other factors which also are of essential influence to the composition of the vegetation.
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The paper deals with the possibilities of decreasing the costs of timber harvesting and silvicultural work through regional cooperation between private forest owners in Finland. Alternatives based on joint management and, on the other hand, joint ownership were compared with activities on a forest-unit basis. According to the results obtained, considerable savings in costs can be gained through cooperation on a regional basis. Examination of the data obtained from the study shows that in the case of harvesting some 40 million Finnish marks can be saved annually by application of the joint-management alternative, and as much as 90 million marks annually by the joint-ownership alternative, when taking the whole country into consideration. The corresponding values for silvicultural work were 2 million marks and 4 million marks, respectively.
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The study is a part in a more comprehensive series of investigations into the profitability of forest improvement measures. The present paper describes a new method for calculation of the suitability of various peatlands for forest drainage. According to this method, the net profit is calculated as the difference between the gross profit and the costs, and the profitability coefficient, as the ratio between the gross profit and the costs. The most important factors used for calculation of the gross profit and the costs are as follows: the site quality index, the volume of the tree stand capable of development at the time of draining, the temperature sum and the stumpage development at the time of draining, the temperature sum and the stumpage price. For use in the field, simplified auxliary tables have been worked out.
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The aim of the study was to discover a model by which the determination of the discount value of a woodlot can be simplified so as to make it possible to avoid both the computation of a cutting budget and the customary discount procedure itself. The regression analysis of the cutting budget data that indicates the discounted amount of the fellings to be expected and the assortment composition can be discovered rather accurately as a function of the measured stand characteristics only.
The PDF includes a summary in German.
The article is fifth part of a series of papers on fully stocked natural normal stands on mineral soils in Finland. This part studies the stands in Northern Lapland, dominated by Scots pine (Pinus sylvestris L.). This investigation was concerned mainly with Scotch pine stands, using Norway spruce (Picea abies (L.) H. Karst.) and birch (Betula sp.) stands for comparison only. 107 sample plots were measured.
The most common forest types in the area are Empetrum-Myrtillus-(Cladina) type, EM(C1), Ericacea-Cladinae type, ErCIT, P-L, and Cladina type, C1T. Stand development is more rapid and wood production greater in EM(C1) type than ErCIT, while the C1T stands are further behind in all respects. The average differences in stand characteristics between forest types are roughly similar, but for cubic volume and total production less, than between the more southerly forest types. Measurements made from increment cores taken at breast height have confirmed that variation of the pine annual ring width has on average been very considerable, in accordance with the climatic, mainly temperature, variations, in the investigation area close to the north pine forest limit.
The few plots from birch and spruce stands measured as samples in the northern Lapland investigation area indicate the generally poor development and wood production of these stands by comparison with pine stands.
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This methodical study aims at assessing discount value and its nature and function in setting a price for a forest holding. The aim is to study how the subject interested in buying or selling a woodlot could in the most meaningful way use discount value to prepare the sale and aid the decision making, taking account his personal interests. The paper includes a literature review on the determination of value.
It is concluded that woodlots have no «correct and real» values and, therefore, they cannot be calculated. Value is formed for the woodlots only in connection to the subject running the household, and his environment and actions. A discount value can be defined as a discount value of future net incomes. In the study different ways to calculate discount value are analysed.
The PDF includes a summary in German.
The article is third part of a series of papers on fully stocked natural normal stands on mineral soils in Finland. This part studies area between the ca. 62nd and 66nd parallels of the strip of land on the Gulf of Bothnia stretching from the coast to an altitude of 150 m above the sea level. The material consists of 121 sample plots in Scots pine (Pinus sylvestris L.) stands, 36 sample plots in Norway spruce (Picea abies (L.) H. Karst.) and 22 sample plots in birch (Betula sp.) stands.
Since the vegetation gradually changes from south to north, it was considered necessary to separate sub-types (marked s.) for certain southern-central forest types; these are poorer in vegetation but obviously more generally found than the main types. The Myrtillus s. sub-type shows slower development of pine stands than the Myrtillus type. The number of stems on the former is greater, owing to the slow initial development, but the mean diameter and height are smaller than on the latter. The difference in volume and growth increases with age. The slower the rate of self-thinning on the sub-type has the effect that the differences in total production are small.
The Vaccinium sub-type s. (VTs.) is poorer in vegetation than the southern-central type, differs from VT less than was the difference in the MT sub-types. The Empetrum-Vaccinium type (EVT) in general differs considerably from the VT but less from the VTs., in relation to which the difference shows mainly in the volume and total production. The EVT differs from the Calluna type as regards in all stand characteristics.
The results of this study suggest that the s.c. sub-type MT could be placed between the types MT and VT. This has significance especially in forest mensuration. However, in practical forest inventories it would seem possible to combine MT and MTs. to avoid having too many site classes. The types VT and VTs. can generally be considered nearly as one type. Similarly, CT and ECT (Empetrum-Calluna type) may be regarded as one site group. The differences may also partly be due to differences in early treatment of the forests.
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The purpose of the present investigation was to study the extent of human interference with the forests of different epochs in the district of north Ostrobothnia in Northern Finland, and its effect on the condition of the forests.
The study revealed that the quantities of wood removed were not most detrimental to the condition of the forest; the regionally irregular loggings and the logging methods employed were the most harmful. The old forms of wood utilization, tar industry, shipbuilding, sawmill industry and timber exports, were characterized by timber selection. Public opinion considered it the only recognized cutting method long after the conditions had changed and silvicultural methods should have been used.
The spread and abandonment of selection cuttings are illustrated in the results of first National Forest Surveys in Finland. According to the first survey (1921–1924), nearly half of the loggings in the province of Oulu were based on selection, which spoiled and devastated 41% of the forests. In the 1930s one-fifth of the North Ostrobothnian forests were weakened by selection cuttings, in 1960s the figure was 6%. The article also summarises the extent of tar and pitch production, sawmill industry, shipbuilding and household wood consumption of wood in the area.
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The present study is a part of larger project into the size and age of certain forest plants. This study seeks to confirm the size-age relationship of Lycopodium clavatum L. and L. annotium L. stands, and the time of sporal regeneration. The stand dimensions were plotted against the size of bracken (Pteridium aquilinum (L.) Kuhn) and ground pine (Lycopodium complanatum L.) stands growing on the same site, and against the age of the timber and the time of fire on the site.
The method based on parallel measurements carried out in burned forests has proved to be suitable for establishing the rate of spreading of stands and their age. The three club-moss species proved to be much alike in their sporal regeneration. They, as well as bracken, regenerate under the condition created by fire. The largest detached patches are often clones. Both Lycopodium clavatum and L. annotium survive fire poorly. Thus, the maximum size of the clones is usually connected with the last forest fire. Pieces of the shoots may survive the fires.
Sporal regeneration of these species also occur without the aid of fire. As also variation in the annual growth of the shoots can be considerable, the stand size of these species is not as good indicator of the date of fire as with Pteridium aquilinum and L. complanatum. The winding appearance of the shoots increases the error in determination of stand age by the stand size further.
The results emphasize the importance of taking into account the time and spread of the plants in the traditional vegetation analysis. A central question is: what is an individual.
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This is a fourth paper in a series of studies concerning logging in farm forests. The objective was to construct a model representing the productivity per farm of logging for delivery cuts. The first objective was to find out how the productivity of logging should be measured. In the study, combined labour and capital are regarded as the input.
Second object was to consider what variables to use in theory to determine the productivity of logging for delivery cuts. The factors affecting productivity depend on the concept of productivity employed. The productivity per farm of logging in delivery cuts can be determined both by regional and by farm variables. Still considering solely the effect of the quality of labour and capital input, the variables representing the person in charge of the delivery cuts are important explanatory farm variables. Others represent the farm totality (size, lines of production etc.).
Third aim was to develop a statistical-mathematical method suitable for constructing the model. Possible methods include regression analysis, which is, however, not the best method when there is large number of different levels to explain, or factor analysis. The suitable method to use in constructing a model depicting the productivity of a farm, was considered to be to condense the explanatory variables into rotated orthogonal factors. After preliminary correlation analysis, estimates of the factors interpreted as rational were employed as the explanatory variables for selective regression analysis.
Last, the model was tried out against actual material collected per farm, and the hypotheses were tested.
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