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Silva Fennica 1926-1997
Acta Forestalia Fennica

Silva Fennica vol. 14 no. 4 | 1980

Category : Article

article id 5094, category Article
Veli-Pekka Järveläinen. (1980). Kuka on maanviljelijä? Silva Fennica vol. 14 no. 4 article id 5094.
English title: Who is a farmer?
Original keywords: metsäntutkimus; metsänomistajat; terminologia; maanviljelijä; metsätilanomistaja
English keywords: terminology; forest owners; forest research; farmer; non-farmer; behavioural research
Abstract | View details | Full text in PDF | Author Info

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 (email)
article id 5093, category Article
Ismo Karhu, Seppo Kellomäki. (1980). Väestön mielipiteet metsänhoidon vaikutuksesta maisemakuvaan Puolangan kunnassa. Silva Fennica vol. 14 no. 4 article id 5093.
English title: Effects of silvicultural practises on the forest landscape. A study on attitudes among inhabitants of Puolanka, north-eastern Finland.
Original keywords: metsänhoito; mielipidetutkimus; metsien virkistyskäyttö; metsämaisema; maiseman arvostus; Puolanka
English keywords: forest management; Finland; recreation; forest landscape; scenic values; attractiveness
Abstract | View details | Full text in PDF | Author Info

The landscape preferences and attitudes of inhabitants of Puolanka, north-eastern Finland, to the effects of silvicultural practice on the forest landscape were studied by a postal inquiry. The effect of silvicultural practice on the forest landscape was mainly negative. Birch (Betula sp.) stands and mixed coniferous and deciduous tree species were the most preferred by the Puolanka inhabitants. The landscape preferences were related to socio-economic background of the inhabitants. The quality of the living environment also influenced the preferences, since uncommon features in the living environment were favoured most.

The PDF includes a summary in English.

  • Karhu, E-mail: ik@mm.unknown (email)
  • Kellomäki, E-mail: sk@mm.unknown
article id 5092, category Article
Seppo Kellomäki, Markku Kanninen. (1980). Eco-physiological studies on young Scots pine stands. IV. Silva Fennica vol. 14 no. 4 article id 5092.
Keywords: Pinus sylvestris; Scots pine; height growth; radial growth; basic density; crown; photosynthate supply; light conditions
Abstract | View details | Full text in PDF | Author Info

Crown and stem growth of young Scots pines (Pinus sylvestris L.) were studied in relation to photosynthate supply and light condition in a stand. The magnitude of needle and bud formation, and radial and height growth were to a great extent dependent on the photosynthate supply. However, in shaded conditions the growth of each characteristics was greater than expected on the basis of photosynthate supply. In the stem system this was especially apparent for height growth. Consequently, height growth was favoured at the expense of radial growth in shaded conditions. It also appeared that the basic density of wood was negatively related to both tree position and photosynthate supply.

The PDF includes a summary in Finnish.

  • Kellomäki, E-mail: sk@mm.unknown (email)
  • Kanninen, E-mail: mk@mm.unknown
article id 5091, category Article
K. M. Bhat. (1980). Variation in structure and selected properties of Finnish birch wood. I. Silva Fennica vol. 14 no. 4 article id 5091.
Keywords: birch; Betula pendula; Betula pubescens; density; wood characteristics; wood anatomy; shrinkage
Abstract | View details | Full text in PDF | Author Info

Variation of wood characteristics was studied in two mature trees of Betula pendula Roth and two of B. pubescens Ehrh. by stressing the interrelationships of some of the structural features, basic density and shrinkage. Correlation analysis revealed that basic density was related to some of the variables studied, viz: number of rings (age) and distance from pith, height from the ground, ring width, fibre length and double wall thickness. Multiple regression equation showed that age from pith and height from the ground explained 80% of variation of basic density in B. pendula. Two structural variables, viz: fibre wall thickness and ring width accounted for only 28% of variation of basic density in B. pubescens. No significant relations could be found between shrinkage and any of the wood parameters measured in B. pendula while some of the relationships were significant in B. pubescens. However, only 55% of variation of volumetric shrinkage was explained by two related factors, viz: basic density and moisture content while only 35% of variation of tangential shrinkage was explained by ring width and fibre width. Increase in fibre length was highly associated with the increase in fibre width, double wall thickness and vessel length in either species.

The PDF includes a summary in Finnish.

  • Bhat, E-mail: kb@mm.unknown (email)
article id 5090, category Article
Matti Kärkkäinen, Raili Voipio. (1980). Suomalainen haapa- ja poppelilajeja (Populus) koskeva kirjallisuus 1759...1979. Silva Fennica vol. 14 no. 4 article id 5090.
English title: Finnish literature on aspen and poplar species (genus Populus), 1759–1979.
Original keywords: metsäntutkimus; bibliografiat; Suomi; poppeli; haapa
English keywords: Populus tremula; Finland; forest research; aspen; bibliography
Abstract | View details | Full text in PDF | Author Info

The first Finnish paper on aspen (Populus tremula L.) was published in 1759 in Åbo (Turku). After this dissertation, numerous scientific and other articles and reports have been published. In this bibliography about 340 papers are listed. Most of the papers deal only with aspen or other species of the genus Populus. Besides these even those articles have been included which deal with other problems but contain some information on the features of poplars.

The titles are listed without any translation or classification. If an article has a summary, it is shown in the title.

The PDF includes a summary in English.

  • Kärkkäinen, E-mail: mk@mm.unknown (email)
  • Voipio, E-mail: rv@mm.unknown
article id 5089, category Article
Seppo Kellomäki. (1980). Alustavia mittaustuloksia kuivauksen ja liotuksen vaikutuksesta kuorellisen mänty- ja kuusipuutavaran kuoren paksuuteen. Silva Fennica vol. 14 no. 4 article id 5089.
English title: Preliminary results of the effect of drying and soaking of the bark thickness of Scots pine and Norway spruce.
Original keywords: kuusi; puutavara; mänty; varastointi; kuori; runkopuu; paksuusmuutos; kuivuminen; liotus
English keywords: Norway spruce; Scots pine; storage; bark thickness; timber; dimensions; dryining; soaking
Abstract | View details | Full text in PDF | Author Info

On the basis of a limited material, the drying of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) timber at room temperature decreased the thickness of the bark proportionally to the decrease in the moisture content. The decrease was the greatest in the middle portion of the trunk. In the spruce material, the decrease in bark thickness was exceeded by the shrinkage of the wood. During soaking, the bark thickness of both tree species decreased, too, contrary to the presupposed hypothesis. In both cases, the shrinkage was the greatest in the middle portion of the trunk. In the spruce material, the decrease in bark thickness was exceeded by the shrinkage of the wood. Possible explanation for the phenomenon is discussed.

The PDF includes a summary in English.

  • Kellomäki, E-mail: sk@mm.unknown (email)
article id 5088, category Article
Reijo Solantie, Kari Ahti. (1980). Säätekijöiden vaikutus Etelä-Suomen lumituhoihin v. 1959. Silva Fennica vol. 14 no. 4 article id 5088.
English title: The influence of weather on the snow damages for forests in Southern Finland in 1959.
Original keywords: Etelä-Suomi; lumituhot; sääolosuhteet; sääilmiöt; huurre
English keywords: snow damage; rime; weather conditions; Southern Finland; orographic precipitation
Abstract | View details | Full text in PDF | Author Info

Snow and rime, attached to branches of conifers, seriously damaged forests in a region of 11,000 km2 in Southern Finland during a passage of two nearly occluded cyclones in 1959. The roles of different weather elements were studied by considering the variations occurring in them over this region and its surroundings. Damage occurred only inside an accentuated pattern of copious orographic precipitation. Precipitation only became attached to and retained on branches in such parts of the area where temperature varied on both sides of freezing point but did not exceed 0.6°C. Furthermore, damage only occurred in forests where rime formed (above a certain level and on sloping towards the prevailing wind).

The PDF includes a summary in English.

  • Solantie, E-mail: rs@mm.unknown (email)
  • Ahti, E-mail: ka@mm.unknown
article id 5087, category Article
Olavi Luukkanen. (1980). Notes on the forests of North-Eastern China and their utilization. Silva Fennica vol. 14 no. 4 article id 5087.
Keywords: forestry; China; forest industry; forest products industry; forest research; Harbin
Abstract | View details | Full text in PDF | Author Info

The paper consists of a report of a study tour made by Finnish forestry students, under the leadership of the author, to Harbin, Changchun, Peking, Nanking and Shanghai in December 1977. In addition, some earlier literature sources concerning forestry in China are briefly reviewed. The paper presents the general geographic characteristics of north-eastern China, as well as the vegetation zones and timber species of this region. Silvicultural methods and the main features of forest technology and forest industry are also discussed. The last chapters describe the forestry administration and current trends in forestry education and research in north-eastern China as observed during the tour.

The PDF includes a summary in Finnish.

  • Luukkanen, E-mail: ol@mm.unknown (email)
article id 5086, category Article
Jussi Meriluoto. (1980). MCPA- ja 2,4,5-T-herbisidien käyttökelpoisuus taimiston hoidossa. Silva Fennica vol. 14 no. 4 article id 5086.
English title: Applicability of MCPA- and 2,4,5-T-herbicides in sapling stand management.
Original keywords: mänty; koivu; herbisidit; taimikonhoito; haapa; vesakontorjunta
English keywords: Populus tremula; Pinus sylvestris; Betula; Scots pine; herbicides; herbicide; seedling stands; aspen; brushkiller; shrub clearance
Abstract | View details | Full text in PDF | Author Info

The applicability of MCPA- and 2,4,5-T-herbicides for use in the management of sapling stands and the possibilities of carrying out foliar spraying at an earlier date than at precent with smaller doses of the active ingredient were examined in this study. The results were obtained from foliage spraying experiments carried out in Central Finland in summer 1976. MCPA and 2,4,5-T were as effective as each other against deciduous tree species. However, MCPA was slightly more effective against aspen (Populus tremula L.) than 2,4,5-T. The spraying date had no effect on the mortality rate of aspen or birch (Betula pendula Roth and B. pubescens Ehrh.) There were only very slight differences between the results for different dosage levels. The damage caused to Scots pine (Pinus sylvestris L.) was very slight. The temperature conditions prevailing during spraying affected spraying effectiveness in such way that the mortality rate decreased during cold period.

The PDF includes a summary in English.

  • Meriluoto, E-mail: jm@mm.unknown (email)

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