Economic losses caused by butt rot in Norway spruce trees in Norway

IF 1.8 3区 农林科学 Q2 FORESTRY Scandinavian Journal of Forest Research Pub Date : 2023-10-26 DOI:10.1080/02827581.2023.2273252
Lennart Noordermeer, Heikki Korpunen, Simon Berg, Terje Gobakken, Rasmus Astrup
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Abstract

Butt rot is a main defect in Norway spruce (Picea abies (L.) Karst.) trees and causes large economic losses for forest owners. However, little empirical research has been done on the effects of butt rot on harvested roundwood and the magnitude of the resulting economic losses. The main objective of this study was to characterize the direct economic losses caused by butt rot in Norway spruce trees for Norwegian forest owners. We used data obtained from seven cut-to-length harvesters, comprising ∼400,000 trees (∼140,000 m3) with corresponding stem profiles and wood grade information. We quantified the economic losses due to butt rot using bucking simulations, for which in a first case, defects caused by butt rot were included, and in a second case, all trees were assumed to be free of butt rot. 16% of trees were affected by butt rot, whereby butt rot tended to occur in larger trees. When butt rot was present in a tree, the saw log volume was reduced by 48%. Proportions of roundwood volume affected by butt rot varied considerably across harvested stands. Our results suggest that butt rot causes economic losses upwards of 7% of wood revenues, corresponding to € 18.5 million annually in Norway.
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挪威云杉树梢腐病造成的经济损失
根茎腐病是挪威云杉(Picea abies, L.)的主要病害。喀斯特)树木,给森林所有者造成巨大的经济损失。然而,很少有实证研究已经做了屁股腐烂对采伐圆材的影响和由此造成的经济损失的大小。本研究的主要目的是描述挪威云杉树梢腐病给挪威森林所有者造成的直接经济损失。我们使用了从7台切割长度收割机获得的数据,包括约40万棵树(约14万立方米),具有相应的茎剖面和木材等级信息。我们使用屈曲模拟量化了由于臀部腐烂造成的经济损失,在第一种情况下,包括臀部腐烂引起的缺陷,在第二种情况下,假设所有树木都没有臀部腐烂。16%的树木受到臀部腐烂的影响,因此臀部腐烂倾向于发生在较大的树木中。当树木存在腐根时,锯材体积减少了48%。不同采伐林分受腐病影响的圆木体积比例差异很大。我们的研究结果表明,屁股腐烂造成的经济损失超过木材收入的7%,相当于挪威每年1850万欧元。
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来源期刊
CiteScore
3.00
自引率
5.60%
发文量
26
审稿时长
3.3 months
期刊介绍: The Scandinavian Journal of Forest Research is a leading international research journal with a focus on forests and forestry in boreal and temperate regions worldwide.
期刊最新文献
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