STUDIES IN FOREST PATHOLOGY: XIV. DECAY OF DOUGLAS FIR IN THE COASTAL REGION OF BRITISH COLUMBIA
STUDIES IN FOREST PATHOLOGY: XIV. DECAY OF DOUGLAS FIR IN THE COASTAL REGION OF BRITISH COLUMBIA
复制标题
森林病理学研究：XIV。
作者：
G. P. Thomas;R. W. Thomas
对道格拉斯冷杉（Pseudotsuga taxifolia（Poir.）布里顿在沿海不列颠哥伦比亚省的研究表明，古老林分的腐烂损失很低，分别占活树和活树与死树总体积的2.6%和7.3%。从活树中分离出25株腐朽真菌，从死树中分离出29株。其中最重要的是Fomes pini（Thore）Lloyd、Polyporus schweinitzii Fries和Fomes pinicola（Sw.）哎呀。某些不规则的发生腐烂产生的真菌和与之相关的腐烂量被追溯到网站的影响，树的年龄或大小，纬度，和立场的历史。根感染是最常见的，但分支存根感染造成最大的平均腐烂量。对树木异常的检查表明，其中一组选择，尤其是松层孔菌的子实体和肿胀节，是隐藏腐烂的有用指标。对枯树的单独分析表明，它们有时会联合..
An investigation of Douglas fir, Pseudotsuga taxifolia (Poir.) Britton, in coastal British Columbia has shown that decay losses in old-growth stands are low, amounting to 2.6 and 7.3% of the gross volume of living and combined living and dead trees respectively. Twenty-five decay-producing fungi were isolated from living trees and 29 from dead trees. The most important of these were Fomes pini (Thore) Lloyd, Polyporus schweinitzii Fries, and Fomes pinicola (Sw.) Cke. Certain irregularities in the occurrence of decay-producing fungi and the amounts of decay associated with them were traced to the influences of site, tree age or size, latitude, and stand history. Root infections were the most frequent but branch-stub infections caused the greatest average amount of decay. An examination of tree abnormalities showed that a select group of them, sporophores and swollen knots of Fomes pini in particular, are useful indicators of hidden decay. A separate analysis of dead trees has shown that they occasion ally ...