Article
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Growth and Yield of Three Boreal Tree Species
Version 1
: Received: 25 March 2021 / Approved: 26 March 2021 / Online: 26 March 2021 (15:28:00 CET)
How to cite: Kärenlampi, P.P. Growth and Yield of Three Boreal Tree Species. Preprints 2021, 2021030673. https://doi.org/10.20944/preprints202103.0673.v1 Kärenlampi, P.P. Growth and Yield of Three Boreal Tree Species. Preprints 2021, 2021030673. https://doi.org/10.20944/preprints202103.0673.v1
Abstract
Growth and yield of boreal tree species are discussed. A growth model is applied, along with verified yield models of sawlogs and veneer logs. Using the normal forest-principle, thinning schedules and rotation ages maximizing the estate-level capital return rate are clarified. Regeneration expenses are amortized at the end of any rotation. Consequently, capitalizations are greater and rotations longer than in recent studies. The capital return rate is a weak function of initial stem count but differs by tree species. The initial stem count strongly contributes to biomass stored in trees. The most promising way of increasing the capital return rate is the reduction of regeneration expenses. Thinnings are triggered by stand volumes of at least 200 m3/ha. The average commercial trunk volume of trees removed in thinnings always exceeds 200 liters. Risk aversion theory proposes short rotations and low stem count in seedling planting unless carbon storage compensation exists.
Keywords
Pinus silvestris; Picea Abies; Betula pendula; Betula pubescens
Subject
Biology and Life Sciences, Forestry
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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