紫杉所在群落梯度与环境梯度的综合研究

• 作 者: 吴榜华 李德志 张启昌 臧润国
• 机 构: 吉林林学院科研生产处,吉林林学院科研生产处,吉林林学院科研生产处,吉林林学院科研生产处,
• 出 处: 吉林林学院学报
• 发表日期: 1993年01期
• 关键词: 环境梯度 群落结构 重要值 群落梯度 相似系数 群落相似性 种群分布 综合研究 环境因子 三维立体模型

本文运用群落梯度与环境梯度综合分析的方法研究了紫杉种群所在的群落结构特性,进行环境梯度分析时所选取的因子是群落内的光照度、林下土壤的pH、容重、速效氯、速效磷、速效钾以及土壤有机质,分析了群落内各主要树木种群的重要值沿环境梯度的分布状况及其成因,运用群落相似性指数(SI)计算了紫杉所在群落中各样带间的相似程度,然后运用极点排序法(PO)进行了三维排序,最后分析了三维立体模型的生态学机理。

In this paper, the community structure characteristics of taxa population were studied by comprehensive analysis of community gradient and environmental gradients. The factors selected for environmental gradient analysis were the illumination within the community, the pH value of soil under forest, the bulk density, available chlorine, available phosphorus , Available potassium (K) and soil organic matter (OM), the distribution and its causes of the important values ​​of major tree species in the community along the environmental gradients were analyzed. The similarity index of various bands in the community was calculated using the community similarity index (SI) , And then use the pole sorting (PO) for three-dimensional sorting, and finally analyzed the ecological mechanism of three-dimensional model.