不同类型茶园昆虫、蜘蛛群落结构分析

应用多样性指数，排序和聚类分析方法研究了不同生态环境和防治处理的茶园昆虫，蜘蛛群落结构，结果表明：在生态控制的茶园，由于完全不使用化学农药，昆虫和蜘蛛的丰富度，多样性指数，均匀度均较大。综合防治的茶园次之一。而主要依靠化学防治的茶錾，丰富度减少，多样性指数和均匀度降低，经常出现害虫暴发成灾的现象。

COMMUNITY STRUCTURE OF INSECTS AND SPIDERS IN DIFFERENT TYPES OF TEA PLANTATION

The community structures of insects and spiders in different kinds of ecological environment and control level of tea plantation were investigated using principal component analysis(PCA),system cluster analysis and Fuzzy cluster analysis.The results show that the number of species,community diversity index and community evenness index reduced from tea plantation of chemical control,via tea plantation of integrated control and tea plantation of ecological management,tea plantation of simple environment,tea plantation of complicated environment;young growth tea plantation,to old growth tea plantation.Therefore,the low stability of community was principally caused by chemical control and oversimplification of ecological environment.