Articles containing the keyword 'development'
Category : Article
The paper elaborates upon various theories to explain economic development and restructuring in the forested regions of advanced countries. The concepts of communities based on the forest sector and the concept of restructuring are discussed before presenting the diversity of relevant theories. Different theoretical approaches in geography and regional and socio-economic sciences are analysed, and the paper concludes that each theory gives only a partial explanation of restructuring under certain conditions. This paper recommends that an explanatory framework should take into account – in addition to general explanatory factors – sectoral, local-specific and policy-related factors and the role of human agency in attempts to explain restructuring and development.
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Tykkyläinen,
E-mail:
mt@mm.unknown
- Hyttinen, E-mail: ph@mm.unknown
- Mononen, E-mail: am@mm.unknown
The effects of precommercial thinning on the quantity and external quality of young Scots pine (Pinus sylvestris L.) stands were examined over two 10-year periods in an experiment comprising five stands growing on sub-dry sites in Finnish Lapland, northern Finland. The thinning treatments applied resulted in stand densities of 625, 1111, 1600, 2500 and 4444 stems ha-1 and a no-treatment, unthinned plot with a randomised block lay-out of two or three replications in each stand. The dominant height of the stands varied between 4 and 8 m at the time of thinning.
The trees reacted only slightly to the increase in growing space during the first ten years following precommercial thinning. During the second 10-year period, increased growing space was reflected more clearly in diameter and volume increment. These reactions were more evident in stands thinned at an early stage. The increment of the thinnest 100–200 trees ha-1 in each treatment was poor. The results showed that when the main principle in precommercial thinning is to achieve even spacing, the remaining smallest trees fail to react positively to the increase in growing space. In other words, the target of precommercial thinning should be to concentrate the increment on the tallest trees, even though they are located in groups. The external quality of the trees in stands where precommercial thinning was carried out at a later stage was high, and the diameter of the thickest branch along the butt log remained under 20 mm. Branch diameter was greater in stands thinned at an early stage. The effect of precommercial thinning on branch diameter when comparing the extreme treatments averaged 5 mm. When the aim of stand management is to combine high quality and good yield in naturally regenerated Scots pine stands in northern Finland, precommercial thinning should not be carried out before the dominant height of 7–8 m. The intensity of precommercial thinning depends on the yield targets of the first commercial thinning. A spacing of 2,500 stems ha-1 satisfies the requirements of both high quality and adequate yield.
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Ruha,
E-mail:
tr@mm.unknown
- Varmola, E-mail: mv@mm.unknown
In the last decades, architectural analysis has been used to understand and to model plant development. These studies have led us to reconsider the problem of measuring plants while taking into account their topological structure at several scales of detail. A computational platform, called AMAPmod, was created to work on such plant representations. This paper outlines the general methodology used in AMAPmod to represent plant topological structures and to explore these special types of databases. Plant structures are first encoded in order to build corresponding formal representations. Then, a dedicated language, AML, enables the user to extract various types of information from the plant databases and provides appropriate analysing tools.
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Godin,
E-mail:
cg@mm.unknown
- Caraglio, E-mail: yc@mm.unknown
- Costes, E-mail: ec@mm.unknown
Budburst timing and the relationship to storage temperature and duration were investigated in four varieties (entries) of 1–2 metres tall silver birch (Betula pendula Roth) trees. A total of 2,160 shoots were sampled, and the material stores in darkness at 0, 3 or 6 °C from November 29, 1993. When the shoots were placed in storage, they had been through a period of 29 days with temperatures below 0°C (since October 15). By that time the autumn dormancy was assumed already broken, and the trees were expected to respond to increased temperature by bud development. On January 4, 1994, and on four subsequent dates, January 19, February 1, March 4 and March 17, shoots were taken out of storage and set in growth chambers at 9, 12 or 15°C. The time to budburst was recorded.
Duration of storage, storage temperatures and varieties were all highly significant for budburst. The interaction terms were of less statistical importance. Based on the contrast between the three different growth chamber environments, three different methods were used to calculate the threshold temperatures for each entry. In spite of the pre-selection of variable budburst performers, the threshold values, varying between 0°C to -2°C, could not be shown to be statistically different. According to the results, the time of budburst changes in accordance with both winter and spring temperatures, being extremely early after a mild winter and warm spring, given sufficient autumn chilling. The similarities in the threshold temperatures indicate that the ranking in earliness between varieties will most likely be the same from year to year without regard to climate change.
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Skuterud,
E-mail:
rs@mm.unknown
- Dietrichson, E-mail: jd@mm.unknown
Temperature sums required for budburst in various Norway spruce (Picea abies (L.) H. Karst.) provenances were determined, and weather statistics were then used to predict the risk of potentially damaging frosts at 11 locations in Sweden. Frost risk was quantified as the probability of a frost occurring within 100 day-degrees (two weeks) after budburst. The examples provided show that a spruce seedling from central Sweden has to sustain almost twice as many frost occassions as a seedling from Belorussia, when planted in southern and central Sweden. The method presented here can be used for mapping early summer frost risk in Sweden and for supporting provenance transfer guidelines.
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Hannerz,
E-mail:
mh@mm.unknown
The effect of photon flux density on bud dormancy release in two-year-old seedlings of Norway spruce (Picea abies (L.) H. Karst.) was examined. The seedlings were first chilled for 0–21 weeks under natural conditions and then forced in a warm greenhouse either in low (15 μEm-2s-1) or in high (300 μEm-2s-1) photon flux density. Occurrence of bud burst was observed in the forcing conditions, and the observations were used for estimating the cumulative frequency distribution of the chilling requirement for growth competence. The estimated distribution had greater variance in the low photon flux density than in the high photon flux density forcing. This finding suggests that unnaturally low photon flux densities during forcing may yield overestimates of the genetic within-population variation in the chilling requirement for growth competence.
The PDF includes an abstract in Finnish.
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Höyhtyä,
E-mail:
rh@mm.unknown
- Hänninen, E-mail: hh@mm.unknown
Models concerning the effects of temperature on dormancy release in woody plants were tested using two-year old seedlings of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.). Chilling experiments suggest that the rest period has a distinct end point. Before the attainment of this end point high temperatures do not promote bud development towards dormancy release, and after it further chilling does not affect the subsequent bud development. A new hypothesis of dormancy release is suggested on the basis of a comparison between present and earlier findings. No difference in the proportion of growth commencing seedlings were detected between the forcing temperatures of 17°C and 22°C. The rest break of 50% of Norway spruce and Scots pine seedlings required six and eight weeks of chilling, respectively. Great variation in the chilling requirement was found, especially for Scots pine.
The PDF includes an abstract in Finnish.
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Hänninen,
E-mail:
hh@mm.unknown
- Pelkonen, E-mail: pp@mm.unknown
Frost resistance during shoot elongation in seedlings of Norway spruce (Picea abies (L.) H. Karst.) was studied in two experiments. The aim of the first study was to evaluate the effect of varying mineral nutrition. Except for potassium, only minor differences in mineral elements concentrations were established, presumably due to low levels of irradiance and thus a low rate of dry matter production. No significant differences in frost injuries were found between the treatments in the experimental series, but the control seedlings were significantly less injured. It is assumed that poor hardiness development at the end of one growth period resulting from low levels of irradiance may decrease the frost resistance during the next shoot elongation phase. Observations from the second experiment with Norway spruce nursery stocks representing different seedling ages and production systems, support this assumption.
The PDF includes an abstract in Finnish.
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Rostad,
E-mail:
hr@mm.unknown
Electrical impedance characteristics of plant cells are dependent on such physiological factors as physiological condition, developmental stage, cell structure, nutrient status, water balance and temperature acclimation. In the measurements also such technical and physical factors as type of electrodes, frequency, geometry of the object, inter-electrode distance and temperature have an effect. These factors are discussed especially with respect to the impedance method in frost resistance studies of plants.
The PDF includes an abstract in Finnish.
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Repo,
E-mail:
tr@mm.unknown
This issue of Silva Fennica consists of eight articles, which are based on a co-nordic conference ”Frost hardiness and over-wintering in forest tree seedlings”, held in Joensuu, Finland, during December 1–3, 1986. The whole annual cycle of the trees is considered. Emphasis is given on methods for the study of frost hardiness, genetic variation in frost hardiness, nitrogen metabolism, bud dormancy release, and joint effect of natural and anthropogenic stress factors in the winter damage of forest trees. Practical implications for tree breeding and nursery management are discussed.
The PDF includes an abstract in Finnish.
Logical structure of three simulation models and one conceptual model concerning effects of temperature on dormancy release in woody plants was examined. The three basic types of simulation models differed in their underlying assumptions. Contrasting implications of the models were inferred by deduction. With the aid of these implications, the model types can be tested using experiments with continuous and interrupted chilling. Similarly, implications of the conceptual model of rest phases were inferred, by which the model can be tested using experiments with continuous chilling and forcing in multiple temperatures. The possibilities to synthetize the conceptual model with any of the three simulation model types, as well as the biological interpretation of the model variables, were discussed.
The PDF includes an abstract in Finnish.
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Hänninen,
E-mail:
hh@mm.unknown
A nation that wishes to enhance its social and economic well-being through more intensive utilization of its forest resources must develop a rather comprehensive policy statement to ensure that the expanded exploitation does not lead to the destruction of these resources. The policy must specify the goals to be achieved, provide general direction on how these goals can be achieved, and develop a system of checks-and-balances to ensure achievement of the long-term objectives. The policy must consider resource protection, the economic needs at the various levels of government, the social impacts of utilization on ways of life in all areas of the nation, and the infrastructure needed in the short and long terms.
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Lewis,
E-mail:
gl@mm.unknown
This is a discussion paper on certain trends in forestry, and society as a whole which may constitute a major challenge for forest policy analysis in the future. Developed and developing countries are treated separately. In developed countries, one of the problems requiring policy analysis is the rising opportunity cost of forestry and the consequent weakening interest in commercial forestry among nonindustrial private forest owners. In developing countries, the most acute problem is the depletion of forests. While looking at the relative merits of the remedial means actually applied or suggested, major guidelines are needed for a proper balance between commercial timber production and forestry for rural development. Evaluation of past forestry projects is also desirable.
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Riihinen,
E-mail:
pr@mm.unknown
The Forest 2000 Programme is a long-term programme for forestry and the forest industries in Finland. It attempts to obtain a better integration of timber production and other forms of forest use. The total annual cut is to be increased by 15 million m3 by the year 2010. This is almost one third greater than the level during the first few years of the 1980’s. In order to achieve the cutting targets, the cut area will have to be increased by almost one third by the turn of the century. The area of thinnings will experience the greatest increase. Considerable changes are proposed in silvicultural and basic improvement work. According to the programme, the growth of the raw-material base and the consumption of the wood-based products will permit an annual increase of about 3% in the production of the forest industries as a whole until the end of the century. This would be the same as the target growth rate of the GNP.
The PDF includes an abstract in Finnish.
Different approaches to the study of the annual rhythm of forest trees are described and compared by analysing the concepts and theories presented in the literature. The seasonality varying morphological and physiological state of forest trees is referred to as the annual rhythm s. lat., from which the annual ontogenetic rhythm is separated as a distinct type. The dormancy phenomena of the trees are grouped into four categories. Theories concerning the regulation of the annual rhythm are divided into two main types, the most common examples of which are the photoperiod theory and the temperature sum theory. Recent efforts towards a synthetic theory are described.
The PDF includes a summary in English.
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Hänninen,
E-mail:
hh@mm.unknown
The article deals with differences in economic growth in different countries and regions and with reasons for these differences. The central role in investments in economic growth and the mechanism of its differentiation are elucidated. The properties of forestry and the forest industries in equation or differentiating economic growth are considered. In the light of the theories of regional differentiation, the mere production of raw material in some region tends to increase differences in economic development if that raw material is processed in some other region – despite the fact that the level of income rises in both regions. It is therefore desirable that afforestation projects in the development countries are accompanied by the development of the forest industries.
The PDF includes a summary in Finnish.
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Riihinen,
E-mail:
pr@mm.unknown
This paper analyses the potential of utilizing a previously existing infrastructure of small sawmills in a backward area to enhance planned social development, considering at the same time both social and economic objectives. The paper presents the case of a rural forest region of 352,000 ha in Southern Chile in the period 1970–73. It is concluded that meaningful contributions can be made by this traditional industry to such development.
The PDF includes a summary in Finnish.
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Saravia,
E-mail:
fs@mm.unknown
The article describes the significance of forestry as a source of employment in the rural areas of Finland. The historical perspective of the presentation dates from the 1860’s. This period includes all the relevant stages in the development of the theme in question, the preindustrial age up to the 1890’s, the period of the creation of the forest industries to the end of 1920’s, the period of the forest industries’ expansion to the end of 1950’s and the period of mechanization from the beginning of 1960’s. The long perspective is possible because of the existence of time series data.
The PDF includes a summary in Finnish.
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Elovirta,
E-mail:
pe@mm.unknown
The development of a society often involves deep-going changes in its economic and social structure. According to the theory of cumulative growth, the economic changes attached to industrialization and modernisation of a society are characterized by the regional differentiation of economic activities. Expansive growth centres, areas with spreading effects, and back-wash areas will develop due to the dynamic forces of cumulative development.
The impact of industrialization and modernization on society as a whole usually manifests itself in an achievement of many of the welfare objectives considered desirable. There are, however, differences between the industries or other economic activities in respect to their effect on the economic or social life of a society or a region. The special feature of forestry and forest industry is that they are more concerned with rural districts than most other economic pursuits. The differentiation effect of forestry and forest industries is not as pronounced as that of certain other industries. Especially the back-wash effects remain rather weak.
In traditional, non-industrialized society the establishment of forestry activities may have an important role in the beginning of economic and social development which is rational from the point of view of the local communities as well as of the society as a whole. However, forestry may also have influences which one can see as socially undesirable. As far as traditional rural societies are concerned, one basic problem is that the establishment of forestry activities may advance the disintegration of ancient social institutions and structures. On the other hand, in a modern, industrialized society one primary function of forestry seems to be to maintain and strengthen the rural social structures and to equalize the regional differences caused by cumulative development. However, the role of forestry in rural development is likely to decrease when the industrialization and modernization progresses, for instance, because the increasing urban population will use forests for purposes other than forestry, such as recreation and nature conservation.
The PDF includes a summary in Finnish.
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Järveläinen,
E-mail:
vj@mm.unknown
- Riihinen, E-mail: pr@mm.unknown
The aim of the paper was to investigate the recreational potential of successional stand based on the suitability of the stands for different recreational activities and the trampling tolerance of ground cover. The relationship between selected recreational activities and the volume of the stands under study has been determined. These functions have been utilized in determining the potential of the successional stand for different recreational activities. Combining this information with trampling tolerance gave criteria for determining the recreational potential of a stand. The results emphasize the importance of varying the distribution of development stages in a recreational area and in its management.
The PDF includes a summary in Finnish.
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Kellomäki,
E-mail:
sk@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.
The PDF includes a summary in English.
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Luukkanen,
E-mail:
ol@mm.unknown
The aim of the present study was to collect information presented in literature concerning the development and germination of the seeds of coniferous trees with special reference to those species which thrive in the conditions prevailing in Finland. Along with the increase in the importance of direct seeding as a silvicultural means in Northern Finland, there is a growing demand for methods by means of which the germination of seeds could be promoted. According to the results obtained from previous studies, such a method can be found, provided that a practically usable and reliable pre-germination method is developed.
The PDF includes a summary in English.
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Lähde,
E-mail:
el@mm.unknown
- Pahkala, E-mail: kp@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes different types of fellings in Norway spruce (Picea abies (L.) H. Karst.) forests in different forest site types. The use of thinning from below and above, clear cutting of Norway spruce stands, and thinning of mixed forests with birch (Betula sp.) are discussed.
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Tertti,
E-mail:
mt@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes preparation and forest regeneration methods of a burned area.
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Arimo,
E-mail:
aa@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses forest management practices of drained peatlands and the allocation of responsibilities in draining of peatlands between district forest officers and forest officers responsible of drainage work. Problems has occured in those cases, when the process of draining had lasted so long that at the time of final assessment of the project the first ditches have already needed maintenance.
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Lukkala,
E-mail:
ol@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses the development of road and path network in state lands in Finland. The speaker wants to stress the need for systematic expansion of the road network, which would serve several demands in forestry.
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Ahola,
E-mail:
va@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the conditions according to which the state can reclaim valuable timber-trees on forest land which ownership is transferred to landless population in settlement work.
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Jokinen,
E-mail:
pj@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the principles of bookkeeping and maintenance of forestry equipment, which reform was in progress in 1938.
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Järvinen,
E-mail:
sj@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the use and purpose of statistics about different felling methods compiled in Forest Service.
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Aro,
E-mail:
pa@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation presents guidelines for preparing an obligatory work program for a district of state forests.
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Ahola,
E-mail:
va@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation discusses legal aspects of cases when property has been used without property rights. Examples related to forestry, hunting, fishing and reindeer husbandry are presented.
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Komsi,
E-mail:
tk@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the reform of localized forest administration executed in 1923 and describes in detail forest management in the conservancy of Western Finland.
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Mäkelä,
E-mail:
lm@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the state of forests in Northern Finland, and suggests that fellings are targeted at the oldest forests until the over-presented over-aged forest are harvested. The preferred regeneration method is natural regeneration in most forest types.
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Räsänen,
E-mail:
ar@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes a study of forest management practices suitable for in Hylocomnium-Myrtillus site type forests, typical for Northern Finland. A special problem for the forest site type is poor regeneration due weak seed production of Norway spruce (Picea abies L. Karst.) and thick moss layer.
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Heikinheimo,
E-mail:
oh@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the principles of charcoal burning in Finland at the time when charcoal had found a new market in ore processing.
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Seppänen,
E-mail:
vs@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes nature turism and recreation in Finland, how timber harvesting and nature conservation affect tourism and ways to adjust fellings to tourism.
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Heikinheimo,
E-mail:
oh@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the history of road transport of timber in Finland and discusses its significance and potential to forestry in the state forests.
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Seppänen,
E-mail:
os@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the Timber Measurement Act, adopted in 1938, and its application.
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Mecklin,
E-mail:
am@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes how need to conserve nature has been recognized in Finland, suggest ways how conservation of nature could be regarded in forest management and describes how it is regulated at present.
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Kujala,
E-mail:
vk@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes growth and form of root systems of different tree species in different sites and how growth of roots affect forest management.
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Aaltonen,
E-mail:
va@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes different methods of assessing tree growth.
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Ilvessalo,
E-mail:
yi@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the principles of National Pensions Act, passed in 1937, and how it is applied in withholding of salary.
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Arola,
E-mail:
va@mm.unknown
Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation includes the salutatory of Mauno Pekkala for the courses.
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Pekkala,
E-mail:
mp@mm.unknown
Silva Fennica Issue 52 includes presentations held in the third professional development courses, arranged for foresters working in the public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Greetings by Mauno Pekkala
National Pensions Act and withholding of salary
Assessment of forest growth
Root systems of trees and forest management
Nature conservation
Timber measurement legislation
Car transportation of timber and its significance to forestry in state forests
Forestry and tourism
Charcoal burning
Experiences in forest management of Hylocomnium-Myrtillus site type forests
Forest regeneration in Perä-Pohjola in northern Finland
Forestry in the conservancy of Western Finland
The right to use property belonging to someone else
Preparation of a works program of a district
Statistics of felling methods
Bookkeeping and maintenance of equipment in forest administration
Reservation of valuable timber-trees in connection to settlement activities
Views on road and path network
Maintenance of drainage systems and forest management of forests in drained peatlands
Regeneration of burned areas
Forest management of Norway spruce forests
The article includes a German summary.
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes production of forest tree seedlings.
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Ahola,
E-mail:
va@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes forest regeneration on poor forest sites.
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Laitakari,
E-mail:
el@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes factors that should be taken into account in forest regeneration.
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Laitakari,
E-mail:
el@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes how criminal law affects the use of forests.
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Komsi,
E-mail:
tk@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes fish farming and management of fishing grounds.
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Wuorentaus,
E-mail:
yw@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes administration and state of wildlife management in the state forests of Finland.
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Klemola,
E-mail:
vk@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes forest management in the state forests in the county of Eastern Finland.
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Huuhtanen,
E-mail:
vh@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes management of mixed forests.
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Lappi-Seppälä,
E-mail:
ml@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes inspection of forest regeneration of mineral soil forest types and drained peatlands, and inspection of ditches.
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Ahola,
E-mail:
va@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes planning and organization of work in regional administration.
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Räsänen,
E-mail:
ar@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes clearing of felling areas.
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Tertti,
E-mail:
mt@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes principles of thinning of forest stands.
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Heikinheimo,
E-mail:
oh@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation summarises the state of road network in districts of Forest Service, the costs of road construction and future needs of transport.
-
Koskenmaa,
E-mail:
ek@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes execution of settlement in compliance to the Land Settlement Act in the state lands, and the role of a forest officer in managing the settlement.
-
Jokinen,
E-mail:
pj@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes afforestation of drained peatlands.
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Lukkala,
E-mail:
ol@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the effect of properties of soil on forest regeneration.
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Aaltonen,
E-mail:
va@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes calculation of the annual financial performance of a forest district and a county.
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Saari,
E-mail:
es@mm.unknown
Silva Fennica issue 46 includes presentations held in professional development courses, arranged for foresters working in public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation includes the greetings of Mauno Pekkala for the courses.
-
Pekkala,
E-mail:
mp@mm.unknown
Silva Fennica Issue 46 includes presentations held in the third professional development courses, arranged for foresters working in the public administration in 1937. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Greetings by Mauno Pekkala
Promotion of agriculture and forestry in Finland
Calculating the annual financial performance of a forest district and a county
Forest regeneration and soil
Afforestation of drained peatlands
Settlement in compliance to the Land Settlement Act in the state lands and role of a forest officer in management of the settlement work
Economy of a regional district and road network
Thinning of forest stands
Clearing of a felling area
Organization of regional administration
Inspection of forest regeneration of mineral soil forest types and drained peatlands, and inspection of ditches
Management of mixed forests
Forestry in the county of eastern Finland
Wildlife management
Fish farming and management of fishing grounds
Criminal law and forests
Factors to consider in forest regeneration
Forest regeneration in poor forest sites
Production of forest tree seedlings
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes forest management in state forests in Finland.
-
Ahola,
E-mail:
va@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the personnel maintenance in forest work and floating.
-
Räsänen,
E-mail:
ar@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation discusses unemployment in Finland, and means to solve the problem. One of the sources of employment could be forest work.
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Kahra,
E-mail:
ek@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the effects of draining of peatlands on water management in the peatland and the surrounding area.
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Metsänheimo,
E-mail:
um@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes how pruning is used to produce quality timber.
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Lappi-Seppälä,
E-mail:
ml@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the principles of forest taxation in Finland in 1930s.
-
Ilvessalo,
E-mail:
yi@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the revenue and expenditure of rural municipalities and the impact of forestry in their economy.
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Kilpiö,
E-mail:
ak@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the principles of reneneration felling in Norway spruce (Picea abies (L.) H. Karst) stands.
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Tertti,
E-mail:
mt@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes determination of stumpage prices in timber sales of the state forests in Finland.
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Mecklin,
E-mail:
am@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the implementation of the Land Settlement Act on parcelling out land in the state-owned lands in Finland.
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Jokinen,
E-mail:
pj@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the productivity of forestry and administration in different districts of state forests in Finland, and how the efficiency of the administration could be improved.
-
Lakari,
E-mail:
ol@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the relationships between forestry and agriculture in the national economy of Finland.
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Jutila,
E-mail:
kj@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes the administration of rural municipalities in Finland.
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Koivisto,
E-mail:
jk@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes legislation concerning settlement policy in the state lands.
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Pekkala,
E-mail:
mp@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation describes national economy from the forestry point of view.
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Kivialho,
E-mail:
kk@mm.unknown
Silva Fennica issue 42 includes presentations held in professional development courses, arranged for foresters working in public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service
This presentation includes the greetings of professor A.K.Cajander for the courses.
-
Cajander,
E-mail:
ac@mm.unknown
Silva Fennica Issue 42 includes presentations held in the second professional development courses, arranged for foresters working in the public administration in 1936. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
The issue includes the following presentations; the individual presentations can be found in separate PDFs:
Greetings of A.K. Cajander
Principles of economic policy
Main points of the new legislation concerning settlement policy and land settlement in the state forests
Administration in the rural municipalities
Interaction of forestry and agriculture in the national economy of Finland
Improving effectivity in the administration of state forests
Implementation of new legislation on parcelling out land in the state lands
Principles of determining stumpage prices
Regeneration fellings of Norway spruce stands
Revenue and expenditure of rural municipalities
Principles of forest taxation
Use of pruning to produce good-quality timber
Effects of forest drainage on water management
Unemployment problem
Personnell maintenance in forest work and floating
Forest management in state forests
-
Metsähallitus,
E-mail:
mh@mm.unknown
The issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the forest management work in the state forests.
-
Ahola,
E-mail:
va@mm.unknown
The issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes building and renovation of wooden buildings, that were owned by the forest organizations.
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Lehtinen,
E-mail:
il@mm.unknown
The issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes methods of forest management that lead to production of qood quality timber, needed in the saw industry.
-
Laitakari,
E-mail:
el@mm.unknown
The issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the administration of funds and bookkeeping in Metsähallitus (Forest Service) in practical level.
-
Järvinen,
E-mail:
sj@mm.unknown
The issue 39 of Silva Fennica includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the quality of timber and coniferous forests in the point of view of saw industry.
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Vuoristo,
E-mail:
iv@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the use and maintenance of village roads.
-
Simola,
E-mail:
es@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes how to make a document required in Metsähallitus (Forest Service) when a stand is marked for harvesting.
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Sopanen,
E-mail:
es@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation discusses the use of peatlands in agriculture and peatlands' suitability to farming.
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Kotilainen,
E-mail:
mk@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation lists statistics available on forestry.
-
Saari,
E-mail:
es@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes travelling guidlines in forest administration.
-
Mela,
E-mail:
am@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation describes the methods of artificial regeneration of forests.
-
Ahola,
E-mail:
va@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation gives guidelines for draining of peatlands.
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Cautón,
E-mail:
ac@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.
This presentation gives guidlines in building and maintaining roads in forest administration.
-
Simola,
E-mail:
es@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the administration in districts of Forest Service.
-
Wuori,
E-mail:
ew@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes cultivation of seedlings in forest nurseries.
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Ahola,
E-mail:
va@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation studies the food supply and economic situation of the farmers in the remote parts of Finland.
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Kinnunen,
E-mail:
ek@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes natural regeneration in forests and factors affecting the success of regeneration.
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Tertti,
E-mail:
mt@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes parcelling out of land for new farms in state forests.
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Jokinen,
E-mail:
pj@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes forest management planning in the state forests.
-
Lakari,
E-mail:
ol@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes statistics of wages in forest work and in floating.
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Hellén,
E-mail:
eh@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes different kinds of peatlands and their suitability to draining and forestry.
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Lukkala,
E-mail:
ol@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes the peparation of national budget in forestry administration.
-
Pekkala,
E-mail:
mp@mm.unknown
Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.
This presentation describes different forest inventory methods.
-
Ilvessalo,
E-mail:
yi@mm.unknown
Category : Article
The tendency of successional development from young vegetation, rich in species and exposed to chance factors, towards regular plant communities, is found all around the world. Thee ecological groups of trees seem to be present in all forest regions in the world, namely the pioneer and the climax species, and a group of pre-climax species that can be ecologically either near the pioneer or the climax species. The succession of tree species in forest always leads to a climax stand, determined by climate, quality of soil and the mutual biotical strengths of the tree species in the region.
This division into ecological groups greatly facilitates choosing among different methods of treating stands and understanding the silvicultural methods of foreign regions. Stands formed by species of the same group must follow the same lines in their silvicultural treatment. For instance, mixed stand consisting of both pioneer and climax species represents a transition stage, in which the climax species strive for dominating position, and preservation of pioneer species is difficult. This indicates the broad lines for management of the stand. Also, regeneration methods of pioneer and climax species must be different. Studying the succession of natural forests can be used as a means to reach the highest possible silvicultural level. This is one reason why the preservation and study of virgin forests still in existence is indispensable.
The PDF includes a summary in Finnish.
-
Kalela,
E-mail:
ek@mm.unknown
The article discusses entomological analyses and their applications. Recent improvements in the methodology are presented and examples of application in the field of pines drying up standing are discussed. Further improvements to the method are proposed. The results of the studies so far indicate that there is need for further studies on duration of the generation of pine weevils (Pissodes sp.)
The PDF contains a summary in Finnish.
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Kangas,
E-mail:
ek@mm.unknown
There has been earlier publications on calculating the standard error of the strips. However, they have been calculated with very small amount of data. In the article the confidence of standard error will be examined throughout. The article is a response to the article written by A. Langsaeter on the theme.
-
Lindeberg,
E-mail:
jl@mm.unknown
The article tries to develop the method for defining the requirements of fertilizers for soil. The chemical soil analysis is also seen as the requirement for exact site classification based on height over age. The study is based on 1500 soil samples, one half of them from forest soils, the other half from arable land soils.
The productivity of different forest types and the results of soil analyses are in line with each other. The most important growth factors are discerned. Some shortcomings of the method are discussed. Combining the soil analysis and the plant analyses of the sample plots seems to give the most accurate about the amount of nutrients that are available for the plants.
-
Valmari,
E-mail:
jv@mm.unknown
The profitability of fast-growing trees (Eucalyptus camaldulensis Dehnh., Acacia mangium Willd. and Melia azedarach L.) was investigated in the north-eastern and eastern provinces of Thailand. The financial, economic, and tentative environmental-economic profitability was determined separately for three fast-growing plantation tree species and for three categories of plantation managers: the private industry, the state (the Royal Forest Department) and the farmers. Fast-growing tree crops were also compared with teak (Tectona grandis L. f.), a traditional medium or long rotation species, and Para rubber (Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.) which presently is the most common cultivated tree in Thailand.
The optimal rotation for Eucalyptus camaldulensis pulpwood production was eight years. This was the most profitable species in pulpwood production. In sawlog production Acacia mangium and Melia azedarach showed a better financial profitability. Para rubber was more profitable and teak less profitable than the three fast-growing species. The economic profitability was higher than the financial one, and the tentative environmental-economic profitability was slightly higher than the economic profitability.
The profitability of tree growing is sensitive to plantation yields and labour cost changes and especially to wood prices. Management options which aim at pulpwood production are more sensitive to input or output changes than those options which include sawlog production. There is an urgent need to improve the growth and yield data and to study the environmental impacts of tree plantations for all species and plantation types.
The PDF includes a summary in Finnish.
-
Niskanen,
E-mail:
an@mm.unknown
- Luukkanen, E-mail: ol@mm.unknown
- Saastamoinen, E-mail: os@mm.unknown
- Bhumibhamon, E-mail: sb@mm.unknown
The investigation examines the development potential of small sawmills in rural Finland. Development is defined with qualitative bias, given small sawmills’ limited possibilities for large-scale investments. Potential is defined in terms of the behavioural limitations to development. The investigation assumes that small sawmill entrepreneurial behaviour is essentially satisficing, and that the concept of bounded rationality is applicable. The empirical material concerns a random sample of 399 sawmills from all regions in Finland collected in connection with the 1990 small sawmill inventory.
Three sets of enterprise/entrepreneurial attributes are constructed using principal component analyses: i) entrepreneurial skills & organization, ii) small sawmill outlets, and iii) information attributes. Development potential is measured by employing discriminant analyses to test these attributes against four a priori sawmill classifications: i) sawmill production structure, ii) entrepreneurial development intentions, ii) sawmill operating environments, and iv) sawmilling as a livelihood. Each of these analyses contributes to an understanding of the entrepreneur-enterprise dialectic.
Based on the use of Pred’s behavioural matrix, small sawmill entrepreneurs’ quantity & quality of information and their ability to use information are examined with respect to sawmill typologies. In this way, the entrepreneur-enterprise dialectic is given a third dimension, that of the entrepreneurs’ partial space. The analysis is therefore able to examine development potential from the standpoint of an entrepreneur-enterprise-environment (partial space) trialectic.
The PDF includes a summary in Finnish.
-
Selby,
E-mail:
js@mm.unknown
- Petäjistö, E-mail: lp@mm.unknown
The study analyses Finnish academic dissertations in forestry sciences on the basis of number published and yearly trends, length, topic, sources of funding and guidance, and the doctoral candidates’ background and career development before and after disputation.
From 1912–1984, 131 dissertations in forest sciences were published. The majority of them were written in Finnish. The length averaged 151 pages. In general, the more rapidly the dissertation was prepared, the better grade it received.
The majority of doctors in forest sciences come from well-to-do families, in cities located in Southern Finland. They constitute 2–6% of the total number of graduating foresters. At the time of disputation their average age has been 36 years. Doctors have used job changes to improve their position in the hierarchy of their employing institutions.
The PDF includes a summary in English.
-
Leikola,
E-mail:
ml@mm.unknown
The paper is the final report of a study on the estimation of value increment and inherent variables of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) stands. The main aim was to obtain improved criteria for decision-making concerning the priority of stands for regeneration.
The construction of various estimation models and their reliability are discussed in detail. The study, together with some previous papers, has resulted in a system which on the basis of a number of easily assessed stand variables gives for the stands concerned the volume of stems, percentages of timber assortments, stumpage value, volume increment and value increment.
The following examples are given with regard to the practical application of the results, in addition to the determination of the relative maturity of stands: 1) The study of various trends in stand development; the comparison between the volume and value variables. 2) The estimation of timber assortments needed for a cutting budget, trees marked for felling etc. 3) The calculation of the value of forests.
The PDF includes a summary in English.
-
Nyyssönen,
E-mail:
an@mm.unknown
- Ojansuu, E-mail: ro@mm.unknown
The report concludes a series of studies on the early development of young Scots pine (Pinus sylvestris L.) stands. The basis assumption made in the study series was that the within-stand light regime is the main driving force for total tree growth and its allocation of photosynthates for crown, stem and root growth. An individual tree growing in a stand under a varying light regime which is controlled by the stand structure, is the basic unit used in the study. The photosynthesis of an individual tree is determined by the light regime. The stand is formed from individual trees.
The model is applied in simulation of the growth and development of tree stands. Several computer runs representing various densities, height distributions and tree species mixtures were carried out. Potential application areas, properties of the model and future needs of investigations are discussed.
The PDF includes a summary in English.
-
Hari,
E-mail:
ph@mm.unknown
- Kellomäki, E-mail: sk@mm.unknown
- Mäkelä, E-mail: am@mm.unknown
- Ilonen, E-mail: pi@mm.unknown
- Kanninen, E-mail: mk@mm.unknown
- Korpilahti, E-mail: ek@mm.unknown
- Nygren, E-mail: mn@mm.unknown
The data used to control the developed methods are presented in chapter two. The third chapter presents the statistical analysis conducted. The factor analysis shows that tree stand characteristics must be divided into three factors to able the information needed for site indexing to distinguish different site classes. The phases of model development are presented and the results of calculations with control data are shown.
The results indicate that for calculations of nature-normal forests the suitable amount of tree stand characters for creating the site indexing function, is three. These are: number of trees (N), basal area of the stand (G) and mean height (H).
The PDF contains a summary in Finnish.
-
Kangas,
E-mail:
yk@mm.unknown
The article is the first part of a wider project aiming to study the measurement practices of stand’s height-over-age based classifications and to develop new methods for actually measuring the side index.
The first part of the article presents the concepts of site indexing and discusses it with a mathematical model. The second part of the article examines the structure of site indexing system regarding the reliability of the method. Third part presents the factors affecting the method development and the fourth part discusses the possible site index classes and their characteristics.
The PDF contains a summary in Finnish.
-
Kangas,
E-mail:
yk@mm.unknown
With developing possibilities to analyse data automatically there is a need to develop the mathematical and statistical practices for calculations. The article presents the basis about the growth of trees and the existing models of growth, the basics on growth functions, and the construction of a regression model to analysis the growth. The theoretical model development has been tested with three existing data sets.
The analysis of growth should be considered with dynamic models. The model need to take into account various aspects and growth factors. The model should have practical implications.
The PDF contains a summary in German.
-
Kangas,
E-mail:
yk@mm.unknown
Category : Research article
-
Vauhkonen,
University of Eastern Finland, School of Forest Sciences, Yliopistokatu 7, FI-80101 Joensuu, Finland; University of Helsinki, Department of Forest Sciences, Latokartanonkaari 7, FI-00014 Helsingin yliopisto, Finland
E-mail:
jari.vauhkonen@uef.fi
- Matala, Natural Resources Institute Finland (Luke), Natural resources, Yliopistokatu 6 B, FI-80100 Joensuu, Finland E-mail: juho.matala@luke.fi
-
Nikula,
Natural Resources Institute Finland (Luke), Natural resources, Ounasjoentie 6, FI-96200 Rovaniemi, Finland
https://orcid.org/0000-0001-8372-8440
E-mail:
ari.nikula@luke.fi
Technological development gives forest companies opportunities to maintain competitiveness in the highly cost-sensitive market for forest products. However, no previous studies have examined the technological development decisions made by forest companies or the support tools used when making them. We therefore aimed to describe and analyze 1) the processes used when making such decisions, 2) the associated decision situations, and 3) the use of and need for decision support tools in these processes, with a harwarder concept as case. Semi-structured interviews were conducted with respondents from six forestry organizations. Two theoretical frameworks were used to analyze the interviews, one for unstructured decision processes and one for decision situations. The respondents’ descriptions of their decision processes were consistent with those observed in other industries, and it was shown that decision-making could potentially be improved by investing more resources into diagnosing the problem at hand. The main objective in decision-making was to maximize economic criteria while satisfying threshold requirements relating to criteria such as operator well-being, soil rutting, and wood value. When facing large uncertainties, interviewees preferred to gather data through operational trials and/or scientific studies. If confronted with large uncertainties that could not be reduced, they proceeded with development only if the potential gains exceeded the estimated uncertainties, and implemented innovations in a stepwise manner. These results indicate a need for greater use of existing decision-support tools such as problem-structuring methods to enable more precise diagnoses, simulations to better understand new innovations, and optimization to better evaluate their theoretical large-scale potential.
-
Jonsson,
The Forestry Research Institute of Sweden (Skogforsk), Uppsala Science Park, SE-751 83 Uppsala, Sweden
E-mail:
rikard.jonsson@skogforsk.se
- Woxblom, The Forestry Research Institute of Sweden (Skogforsk), Uppsala Science Park, SE-751 83 Uppsala, Sweden E-mail: lotta.woxblom@skogforsk.se
- Björheden, The Forestry Research Institute of Sweden (Skogforsk), Uppsala Science Park, SE-751 83 Uppsala, Sweden E-mail: rolf.bjorheden@skogforsk.se
- Nordström, Swedish University of Agricultural Sciences, Department of Forest Resource Management, SE-901 83 Umeå, Sweden E-mail: eva-maria.nordstrom@slu.se
- Blagojevic, University of Novi Sad, Department of Water Management, Trg D. Obradovica 8, 21000 Novi Sad, Serbia E-mail: bosko.blagojevic@polj.edu.rs
- Lindroos, Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE-901 83 Umeå, Sweden E-mail: ola.lindroos@slu.se
Changes in the structure and development of managed Scots pine (Pinus sylvestris L.) stands with respect to changing environmental conditions were set for the period 1979–2015. The study was conducted in conditions of natural pinewoods and pine-oak sites on five permanent research plots (0.25 ha) in Eastern Bohemia, Czech Republic (CR). Studied forest stands showed positive development of stand structural characteristics related to their diversity, number of regeneration individuals and growth characteristics. The standing volume of regularly distributed tree layer in 2015 was in the range of 320–434 m3 ha–1, which indicates an increase by 5.9–20.0% over 10 years. Correlation between pine radial increment and the amount of precipitation was generally the strongest one. Positive statistically significant correlation between diameter increment and temperature was demonstrated only for the average March temperature of the current year. Within the CR, study site can be characterised as a medium polluted area both for sulphur and nitrogen, despite this SO2 concentrations and N deposition in combination with extreme climate events caused severe defoliation in pine stands. Conversely, radial growth was positively significantly correlated with mean NOx concentrations. Drought mainly in combination with even medium environmental pollution can further worsen the health status of pine stands in lowland areas of Central Europe. Thus, formulation of silvicultural techniques able to mitigate the impact of these stress factors is needed.
- Vacek, Czech University of Life Sciences Prague, Faculty of Forestry and Wood Sciences, Kamýcká 129, 165 21 Prague, Czech Republic E-mail: vacekstanislav@fld.czu.cz
- Vacek, Czech University of Life Sciences Prague, Faculty of Forestry and Wood Sciences, Kamýcká 129, 165 21 Prague, Czech Republic E-mail: vacekz@fld.czu.cz
- Bílek, Czech University of Life Sciences Prague, Faculty of Forestry and Wood Sciences, Kamýcká 129, 165 21 Prague, Czech Republic E-mail: bilek@fld.czu.cz
- Simon, Mendel University in Brno, Faculty of Forestry and Wood Technology, Zemědělská 3, 613 00 Brno, Czech Republic E-mail: jaroslav.simon@mendelu.cz
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Remeš,
Czech University of Life Sciences Prague, Faculty of Forestry and Wood Sciences, Kamýcká 129, 165 21 Prague, Czech Republic
E-mail:
remesj@email.cz
- Hůnová, Czech Hydrometeorological Institute, Na Šabatce 17 143 06 Prague, Czech Republic E-mail: hunova@chmi.cz
- Král, Czech University of Life Sciences Prague, Faculty of Forestry and Wood Sciences, Kamýcká 129, 165 21 Prague, Czech Republic E-mail: kraljan@fld.czu.cz
- Putalová, Czech University of Life Sciences Prague, Faculty of Forestry and Wood Sciences, Kamýcká 129, 165 21 Prague, Czech Republic E-mail: putalova@fld.czu.cz
- Mikeska, University of Hradec Králové, Faculty of Science, Rokitanského 62, 500 03 Hradec Králové, Czech Republic E-mail: Mikeska.Miroslav@uhul.cz
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Lindroos,
Department of Forest Resource Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
E-mail:
ola.lindroos@srh.slu.se
- Henningsson, Komatsu Forest AB, Box 7124, SE-907 04 Umeå, Sweden E-mail: mh@nn.se
- Athanassiadis, Department of Forest Resource Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden E-mail: da@nn.se
- Nordfjell, Department of Forest Resource Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden E-mail: tn@nn.se
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Biechele,
University of Freiburg, Institute of Forest Utilisation and Work Science, Werthmannstr. 6, DE-79085 Freiburg, Germany
E-mail:
tobias.biechele@fobawi.uni-freiburg.de
- Nutto, University of Freiburg, Institute of Forest Utilisation and Work Science, Werthmannstr. 6, DE-79085 Freiburg, Germany E-mail: ln@nn.de
- Becker, University of Freiburg, Institute of Forest Utilisation and Work Science, Werthmannstr. 6, DE-79085 Freiburg, Germany E-mail: gb@nn.de
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Stendahl,
Swedish University of Agricultural Sciences, Department of Forest Products, P.O. Box 7008, SE-750 07 Uppsala, Sweden
E-mail:
matti.stendahl@sprod.slu.se
- Roos, Swedish University of Agricultural Sciences, Department of Forest Products, P.O. Box 7008, SE-750 07 Uppsala, Sweden E-mail: ar@nn.se
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Kalliokoski,
The Finnish Forest Research Institute, Vantaa Research Unit, P.O. Box 18, FI-01301 Vantaa, Finland
E-mail:
tuomo.kalliokoski@metla.fi
- Nygren, Department of Forest Ecology, P.O. Box 27, FI-00014 University of Helsinki, Finland E-mail: pn@nn.fi
- Sievänen, The Finnish Forest Research Institute, Vantaa Research Unit, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: rs@nn.fi
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Hallikainen,
Finnish Forest Research Institute, Rovaniemi Research Unit, P.O. Box 16, FI-96301 Rovaniemi, Finland
E-mail:
ville.hallikainen@metla.fi
- Hyppönen, Finnish Forest Research Institute, Rovaniemi Research Unit, P.O. Box 16, FI-96301 Rovaniemi, Finland E-mail: mikko.hypponen@metla.fi
- Hyvönen, Finnish Forest Research Institute, Rovaniemi Research Unit, P.O. Box 16, FI-96301 Rovaniemi, Finland E-mail: juha.hyvonen@metla.fi
- Niemelä, Finnish Forest Research Institute, Rovaniemi Research Unit, P.O. Box 16, FI-96301 Rovaniemi, Finland E-mail: jn@nn.fi
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Huuskonen,
University of Helsinki, Dept. of Forest Ecology, P.O. Box 27, FI-00014 University of Helsinki, Finland
E-mail:
sh@nn.fi
- Hynynen, The Finnish Forest Research Institute, Vantaa Research Unit, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: jh@nn.fi
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Mehtätalo,
Finnish Forest Research Institute, Joensuu Research Centre, P.O. Box 68, FI-80101 Joensuu, Finland
E-mail:
lauri.mehtatalo@metla.fi
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Harper,
Université de Québec à Montréal, Groupe de recherche en écologie forestière interuniversitaire, CP 8888, succ. A, Montréal, QC, Canada H3C 3P8
E-mail:
c1444@er.uqam.ca
- Bergeron, NSERC-UQAT-UQAM, Industrial Chair in sustainable forest management, CP 8888, succ. Centre-Ville, Montréal, QC, Canada H3C 3P8 E-mail: yb@nn.ca
- Gauthier, Canadian Forest Service, Laurentian Forestry Centre, P.O. Box 3800, Sainte-Foy, QC, Canada G1V 4C7 E-mail: sg@nn.ca
- Drapeau, Université de Québec à Montréal, Groupe de recherche en écologie forestière interuniversitaire, CP 8888, succ. A, Montréal, QC, Canada H3C 3P8 E-mail: pd@nn.ca
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Maltamo,
Faculty of Forestry, University of Joensuu, P.O. Box 111, FIN-80101 Joensuu, Finland
E-mail:
matti.maltamo@forest.joensuu.fi
- Eerikäinen, Faculty of Forestry, University of Joensuu, P.O. Box 111, FIN-80101 Joensuu, Finland E-mail: ke@nn.fi
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Hökkä,
Finnish Forest Research Institute, Rovaniemi Research Station, PO Box 16, 96301 Rovaniemi, Finland
E-mail:
hannu.hokka@metla.fi
- Penttilä, Finnish Forest Research Institute, Rovaniemi Research Station, PO Box 16, 96301 Rovaniemi, Finland E-mail: tp@nn.fi
Category : Review article
-
Hyde,
Centre for International Forestry Research, Bogor, Indonesia
E-mail:
wfhyde@aol.com
- Köhlin, Göteborg University, Göteborg, Sweden E-mail: gk@nn.se
