石榴园节肢动物群落多样性与其它指标间关系的通径分析

Path Analysis of Diversity Indexes and Other Ecological Indexes of Arthropod Communities in Pomegranate Field

对怀远县石榴园节肢动物群落以通径分析方法分析总群落及各亚群落中多样性与其它生态学指标之间的关系。结果表明,总群落中均匀度J与多样性H′关系密切,除直接作用外,丰富度指数R、物种数S、优势集中性C、优势度d均通过其对多样性产生影响;天敌亚群落中优势集中性C对多样性作用较大;非天敌亚群落优势集中性C、丰富度R、优势度d均是影响该亚群落多样性的重要因素。

The relations between diversity indexes and other ecological indexes in several communities were analyzed by path analysis.Diversity indexes in total community and nonnatural enemy sub-community were decided by evenness,richness,dominant concentration prominently and that of natural enemy sub-community was decided by dominant concentration prominently.