Light-growth response relationships in Pacific silver fir (Abies amabilis) and subalpine fir (Abies lasiocarpa)
Light-growth response relationships in Pacific silver fir (Abies amabilis) and subalpine fir (Abies lasiocarpa)
复制标题
太平洋银杉（Abies amabilis）和亚高山冷杉（Abies lasiocarpa）的光生长响应关系
作者：
K. Klinka;Qing;G. Kayahara;R. Carter;B. Blackwell
太平洋银冷杉和亚高山冷杉，都是典型的栖息在北美西北部的高海拔森林，被认为是耐荫物种，前者比后者更宽容。为了确定它们的相对耐荫性，建立了先进的再生采样沿着从开放地区到森林内的立场，光照梯度和分析，获得的增长，和叶措施。与每个研究树和其1991年的高度增量，1991年的横向增量，卡尺在1991年的领导者的基础上，和特定的叶面积的冠层以上的光（在光合有效波长）的百分比之间的关系进行了检查，为个别网站，网站进行分组，根据土壤水分。有强烈的，一致的，和相似的关系之间的辐照度，生长性能，和比叶面积为两个物种。随着光照强度的降低，生长性能下降，比叶面积增加。尽管生态…
Pacific silver fir and subalpine fir, both typically inhabiting high-elevation forests in northwestern North America, were considered shade-tolerant species, the former more tolerant than the latter. To determine their relative shade tolerance, established advance regeneration was sampled along a light gradient ranging from open areas to inside a forest stand, and analysis of irradiance, growth, and leaf measures was obtained. Relationships between the percentage of above-canopy light (in the photosynthetically active wavelengths) associated with each study tree and its 1991 height increment, 1991 lateral increment, caliper at the base of the 1991 leader, and specific leaf area were examined for individual sites, and sites were grouped according to soil moisture. There were strong, consistent, and similar relationships between irradiance, growth performance, and specific leaf area for both species. As irradiance decreased, growth performance decreased and specific leaf area increased. In spite of ecologic...
理论物理进展第 79 卷（1988）
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