Articles containing the keyword 'metsät'

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.

• Kotimäki, E-mail: tk@mm.unknown

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.

• Järveläinen, E-mail: vj@mm.unknown

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.

• Vehkamäki, E-mail: sv@mm.unknown

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.

• Ripatti, E-mail: pr@mm.unknown

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.

• Penttinen, E-mail: mp@mm.unknown

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.

• Nuorteva, E-mail: mn@mm.unknown

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.

• Päivänen, E-mail: jp@mm.unknown

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.

• Kilkki, E-mail: pk@mm.unknown

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. 

• Annila, E-mail: ea@mm.unknown

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.

• Rummukainen, E-mail: ar@mm.unknown

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.

• Ollonqvist, E-mail: po@mm.unknown

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.

• Reunala, E-mail: ar@mm.unknown

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.

• Raumolin, E-mail: jr@mm.unknown

• Leikola, E-mail: ml@mm.unknown

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.

• Manninen, E-mail: am@mm.unknown
• Heikkinen, E-mail: ph@mm.unknown
• Husman, E-mail: kh@mm.unknown
• Kangas, E-mail: jk@mm.unknown
• Klen, E-mail: tk@mm.unknown
• Mononen, E-mail: im@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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.

• Westman, E-mail: cw@mm.unknown
• Leikola, E-mail: ml@mm.unknown
• Nummi, E-mail: tn@mm.unknown

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.

• Oja, E-mail: so@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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.

• Mälkönen, E-mail: –
• Finnish Society of Forest Science, E-mail: –

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.

• Leikola, E-mail: –
• Koponen, E-mail: –

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.

• Sepponen, E-mail: ps@mm.unknown

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.

• Kärkkäinen, E-mail: mk@mm.unknown

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.

• Leikola, E-mail: ml@mm.unknown

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.

• Kuusipalo, E-mail: jk@mm.unknown

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.

• Rieppo, E-mail: kr@mm.unknown
• Väyrynen, E-mail: sv@mm.unknown

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.

• Karjalainen, E-mail: ak@mm.unknown
• Hyväkkä, E-mail: lh@mm.unknown
• Kärki-Folkersma, E-mail: sk@mm.unknown

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.

• Kangas, E-mail: jk@mm.unknown
• Klen, E-mail: tk@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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.

• Saarilahti, E-mail: ms@mm.unknown

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.

• Makkonen, E-mail: om@mm.unknown

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.

• Puukko, E-mail: kp@mm.unknown

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.

• Kyttälä, E-mail: tk@mm.unknown

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.

• Järveläinen, E-mail: vj@mm.unknown

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.

• Paavilainen, E-mail: –
• Seppälä, E-mail: –

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.

• Hannelius, E-mail: sh@mm.unknown

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.

• Rauramaa, E-mail: rr@mm.unknown
• Husman, E-mail: kh@mm.unknown
• Kukkonen, E-mail: kk@mm.unknown
• Voutilainen, E-mail: ev@mm.unknown

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.

• Palosuo, E-mail: vp@mm.unknown

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.

• Kellomäki, E-mail: sk@mm.unknown
• Wuorenrinne, E-mail: hw@mm.unknown

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. 

• Rosengren, E-mail: cr@mm.unknown

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. 

• Kellomäki, E-mail: sk@mm.unknown

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.

• Enivaara, E-mail: ae@mm.unknown

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.

• Leikola, E-mail: –

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.

• Klen, E-mail: tk@mm.unknown
• Louhevaara, E-mail: vl@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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.

The PDF includes a summary in English.

• Saarilahti, E-mail: ms@mm.unknown

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.

The PDF includes a summary in English.

• Harstela, E-mail: ph@mm.unknown
• Tervo, E-mail: lt@mm.unknown

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.

The PDF includes a summary in English.

• Høsteland, E-mail: jh@mm.unknown

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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• Harstela, E-mail: ph@mm.unknown

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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• Järvinen, E-mail: oj@mm.unknown
• Kuusela, E-mail: kk@mm.unknown
• Väisänen, E-mail: rv@mm.unknown

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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• Kellomäki, E-mail: sk@mm.unknown

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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• Valonen, E-mail: pv@mm.unknown

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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• Kärkkäinen, E-mail: mk@mm.unknown

• Hakkarainen, E-mail: ah@mm.unknown

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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• Rainio, E-mail: rr@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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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• Suomen Metsäteollisuuden Keskusliitto, E-mail: –

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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• Heiskanen, E-mail: hh@mm.unknown

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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• Hannelius, E-mail: sh@mm.unknown

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.

• Hakkila, E-mail: ph@mm.unknown

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.

• Kantola, E-mail: mk@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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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• Hakkila, E-mail: ph@mm.unknown

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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• Kärkkäinen, E-mail: mk@mm.unknown

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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• Reunala, E-mail: ar@mm.unknown

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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• Makkonen, E-mail: om@mm.unknown

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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• Luukkanen, E-mail: ol@mm.unknown

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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• Heiramo, E-mail: th@mm.unknown

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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• Makkonen, E-mail: om@mm.unknown

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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• Roitto, E-mail: yr@mm.unknown

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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• Järveläinen, E-mail: vj@mm.unknown

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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• Hurskainen, E-mail: jh@mm.unknown
• Reunala, E-mail: ar@mm.unknown

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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• Wuorenrinne, E-mail: hw@mm.unknown

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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• Mikhailov, E-mail: lm@mm.unknown

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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• Haarlaa, E-mail: rh@mm.unknown

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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• Hahtola, E-mail: kh@mm.unknown
• Järveläinen, E-mail: vj@mm.unknown
• Reunala, E-mail: ar@mm.unknown

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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• Kärkkäinen, E-mail: mk@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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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• Lovén, E-mail: ll@mm.unknown

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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• Finnish Society of Forest Science, E-mail: –

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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• Oskarsson, E-mail: oo@mm.unknown
• Tigerstedt, E-mail: pt@mm.unknown

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.

The PDF includes a summary in English.

• Kärkkäinen, E-mail: mk@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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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• Lappalainen, E-mail: al@mm.unknown

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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• Linnamies, E-mail: ol@mm.unknown

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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• Silvennoinen, E-mail: us@mm.unknown
• Haarlaa, E-mail: rh@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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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• Mikola, E-mail: pm@mm.unknown

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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• Haarlaa, E-mail: rh@mm.unknown

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 x_j. 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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• Kärkkäinen, E-mail: mk@mm.unknown

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.

The PDF includes a summary in English.

• Lindroos, E-mail: hl@mm.unknown
• Nenonen, E-mail: mn@mm.unknown
• Pesonen, E-mail: pp@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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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• Osara, E-mail: no@mm.unknown

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.

The PDF includes a summary in English.

• Haarlaa, E-mail: rh@mm.unknown

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.

The PDF includes a summary in English.

• Järveläinen, E-mail: vj@mm.unknown

This article describes the 60^th 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.
The PDF includes a summary in English.

• Finnish Society of Forest Science, E-mail: –

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.

The PDF includes a summary in English.

• Riihinen, E-mail: pr@mm.unknown

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.

The PDF includes a summary in English.

• Nyyssönen, E-mail: an@mm.unknown

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.
The PDF includes a summary in English.

• Holopainen, E-mail: vh@mm.unknown

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.
The PDF includes a summary in English.

• Heiskanen, E-mail: vh@mm.unknown

The article gives an account of the organization of research work, which was started in the 18^th 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.
The PDF includes a summary in English.

• Ilvessalo, E-mail: yi@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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.

The PDF includes a summary in English.

• Saari, E-mail: es@mm.unknown

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.

The PDF includes a summary in English.

• Järveläinen, E-mail: vj@mm.unknown
• Vadén, E-mail: tv@mm.unknown

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.

The PDF includes a summary in English.

• Seppälä, E-mail: ks@mm.unknown

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.

• Finnish Society of Forest Science, E-mail: –

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.

The PDF includes a summary in English.

• Rinkinen, E-mail: ir@mm.unknown

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.

The PDF includes a summary in English.

• Makkonen, E-mail: om@mm.unknown

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. 

• Finnish Society of Forest Science, E-mail: –

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.

The PDF includes a summary in German.

• Kangas, E-mail: yk@mm.unknown

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.

The PDF includes a summary in German.

• Ilvessalo, E-mail: mi@mm.unknown
• Ilvessalo, E-mail: yi@mm.unknown

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.