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Silva Fennica 1926-1997
Acta Forestalia Fennica

Silva Fennica no. 56 | 1942

Category : Article

article id 4576, category Article
Bo-Eric Blumenthal. (1942). Distribution and properties of aspen in Finland. Silva Fennica no. 56 article id 4576.
Keywords: Populus tremula; height growth; distribution; diameter growth; decay; forest site type; aspen
Abstract | View details | Full text in PDF | Author Info

Aspen (Populus tremula L.) is a common tree in Finland, and has been used, for instance, in matchstick industry. However, there has been little studies on its distribution and properties. In this study, 142 sample trees in different forest site types in Valtimo and Onkamo in Eastern Finland were measured in detail in 1935.

According to the results, during the first 10 years aspens height growth is fastest of the Finnish tree species surpassing, for instance, Scots pine (Pinus sylvestris L.) and birch (Betula sp.) . The diameter growth is similar to Scots pine up to the age of 50 years, after which the growth of aspen exceeds Scots pine. Branchless portion of the stem compared to the height of the tree increases until it reaches about 50% of the height of the tree. In poorer sites aspen is prone to decay.

Aspen regenerates easily both by root shoots and seeds. If root shoots are left to grow, the mother tree should be free of decay. In general, seedlings are of better quality. Good quality aspen stands require thinning and a rich forest type. If an old aspen stand has decay, the trees should be ring-barked and the site regenerated with a new tree species.

The article includes an abstract in German.

  • Blumenthal, E-mail: bb@mm.unknown (email)

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