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Silva Fennica 1926-1997
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Acta Forestalia Fennica
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Acta Forestalia Fennica vol. 14 | 1920

Category: Article

article id 7038, category Article
O. J. Lakari. (1920). Suomen metsätieteellisen seuran toiminta v. 1917-1920. Acta Forestalia Fennica vol. 14 no. 5 article id 7038. https://doi.org/10.14214/aff.7038
English title: Activities of Finnish Society of Forest Sciences in 1917-1920.
English keywords: forest sciences

The article includes the minutes of the Finnish Society of Forest Sciences in 1917-1920. In the meetings of the society were held 39 presentations which are included in the article.

The PDF includes a German summary.

  • Lakari, ORCID ID:E-mail:
article id 7037, category Article
O. J. Lakari. (1920). Tutkimuksia Pohjois-Suomen metsätyypeistä. Acta Forestalia Fennica vol. 14 no. 4 article id 7037. https://doi.org/10.14214/aff.7037
English title: Studies on forest site types in Northern Finland.

The forest site classification system used in Finland is based on ground vegetation rather than the wood production capacity. A. K. Cajander has presented a detailed classification of different forest site classes in different parts of the country. This study focuses on the forest site types of Northern Finland, which are less well defined. The article presents detailed vegetation analysis and lists of plant species in different forest site types in Northern Finland. In contrast to southern parts of Finland, both the natural Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst) stands are uneven-aged in the north. The forests are also relatively thin. There is a marked difference in height of trees between the richest and poorest sites, but the dominant trees of the same site type were of similar height both in the north and south part of the study area. The differences in the height of dominant trees seem to be smaller than in Southern Finland. Also, in windy areas prone to snow damage, climate conditions can affect tree growth more than the forest site type. In more sheltered areas forest site type determines forest growth.

The PDF includes a summary in German.

  • Lakari, ORCID ID:E-mail:
article id 7036, category Article
I. Lassila. (1920). Tutkimuksia mäntymetsien synnystä ja kehityksestä pohjoisen napapiirin pohjoispuolella. Acta Forestalia Fennica vol. 14 no. 3 article id 7036. https://doi.org/10.14214/aff.7036
English title: Studies on the regeneration and development of Scots pine forests north of the arctic circle.

The frequency of years when Scots pine (Pinus sylvestris L.) produces cones and seeds affects its reproduction in the north. The study area covered most of the pine lands in Northern Finland. Scots pine seems to be able to produce cones relatively often in the north. The amount of seeds produced in one year was, however, not sufficient to produce a dense seedling stand. Thus, the natural pine stands contain usually trees in different ages-classes, which have germinated in different years. The cone production is highest in 150-170 years old trees. Pine also needs warm summers to produce viable seeds. Brush fires avail the growth of seedlings, because they clear of ground vegetation that hinders germination of seeds. The seedlings need also moisture to survive; good regeneration years have often had rainy summers.

The PDF includes a summary in German.

  • Lassila, ORCID ID:E-mail:
article id 7035, category Article
V. T. Aaltonen. (1920). Wasserverbrauch der Bäume und Feuchtigkeitsverhältnisse des Bodens. Acta Forestalia Fennica vol. 14 no. 2 article id 7035. https://doi.org/10.14214/aff.7035
  • Aaltonen, ORCID ID:E-mail:
article id 7034, category Article
V. T. Aaltonen. (1920). Über die Ausbreitung und den Reichtum der Baumwurzeln in den Heidewäldern Lapplands. Acta Forestalia Fennica vol. 14 no. 1 article id 7034. https://doi.org/10.14214/aff.7034
  • Aaltonen, ORCID ID:E-mail:

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