The effect of injuries of the stems to amount of merchantable timber in the northernmost Finland

Tikka, P. S.

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P. S. Tikka

Puiden vikanaisuuksien vaikutuksesta hakkuutulokseen Perä-Pohjolan havumetsissä

Tikka P. S. (1938). Puiden vikanaisuuksien vaikutuksesta hakkuutulokseen Perä-Pohjolan havumetsissä. Acta Forestalia Fennica vol. 46 no. 5 article id 7340. https://doi.org/10.14214/aff.7340

English title: The effect of injuries of the stems to amount of merchantable timber in the northernmost Finland

Abstract

The effect of different kinds of injuries in the amount of merchantable timber was studied in 57 sample plots in the northernmost Finland. Without any injuries the yield of timber would have been 72.3% in Scots pine (Pinus sylverstris L.) and 89.9% in Norway spruce (Picea abies (L.) H. Karst.). Butting, and removal of parts of the stems due to Injuries decreased the volume by 10.4% in pine and 13.5% in spruce. The main cause for butting of pine was fire wounds, and butt rot in spruce. Also pine blister rust (Peridermium pini and Cronartium flaccidum) causes injuries in Scots pine. The better the forest site type, the smaller is the timber discarded due to injuries. In pine 54% and in spruce 53% of the trees and were healthy. The forests in the northernmost Finland are over-mature which increase the occurrence of fire wounds and decay. Thus, forest fire control and the felling or thinning of over-mature stands will improve the quality of the timber in the long run.

The PDF includes a summary in German.

Original keywords
hakkuukertymä; vikaisuus; laho; käyttöpuu

English keywords
decay; stem damage; merchantable timber; injuries

Published in 1938

Available at https://doi.org/10.14214/aff.7340 | Download PDF

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