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Peitsa Mikola (email)

Kuusen latvus- ja runkomuodosta Maanselän lumituhoalueella

Mikola P. (1938). Kuusen latvus- ja runkomuodosta Maanselän lumituhoalueella. Silva Fennica no. 47 article id 4546. https://doi.org/10.14214/sf.a9071

English title: Crown and stem form of Norway spruce in the snow damage areas of Maanselkä in Northern Finland

Abstract

Finnish tree species have adapted differently to heavy snow loads that occur especially in fell areas in Kuusamo and Salla as well as Maanselkä area in Sotkamo and Rautavaara in Northern Finland. Norway spruce (Picea abies Karst. L) is adapted better than Scots pine (Pinus sylvestris L.). The aim of this study was to investigate how crown and stem form of Norway spruce in the snow damage area of Maanselkä area differ from other areas in the same region.  

Relatively broad crown at the base of the stem, quickly tapering crown and narrow and even upper crown were typical for trees growing in the snow damaged areas. The higher the altitude is, the stronger tapering the crown is. The tapering begins usually in a height of 4-5 meters. Even the stem diameter begins to taper strongly at this height. In the areas where heavy snow does not cause snow damage, top of crown is broader. Also, in the snow damage areas the damaged trees seem to have broader crown shape than the trees with little damages.  

Height of the trees decreases in the snow damage areas compared to forests in lower altitudes, which can be caused both by wind and snow load. 

The article includes a German summary. 

Original keywords
kuusi; Picea abies; latvusmuoto; lumituho; runkomuoto

English keywords
Norway spruce; northern Finland; Lapland; stem form; stem diameter; snow damage; crown form; crown shape; crown width

Published in 1938

Views 1445

Available at https://doi.org/10.14214/sf.a9071 | Download PDF

Creative Commons License CC BY-SA 4.0

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