两色绿刺蛾幼虫空间分布型

The spatial distribution pattern of Latoria bicolor larvae

应用聚集度指标法、回归分析法、零频率方法对两色绿刺蛾幼虫在毛竹林间的分布型进行测定。结果表明,两色绿刺蛾幼虫在竹林中呈聚集分布,分布的基本成分为个体群。用零频率方法分析得,两色绿刺蛾幼虫种群类型为聚集度零频率制约型,并确定了林间调查的理论抽样数和简单序贯抽样分析表。

Based on the clump intensity index, regressive analysis method and zero frequency method, the spatial distribution pattern of Latori bicolor （Walker） larvae was studied. The results showed, （ 1 ） the spatial distri, bution pattern of L. bicolor larvae was in accordance with assemble type in the pine forest and its component was individual colony and （2） the population was zero frequency dependent. The optimal sampling number of forest survey was analyzed and calculated, and the sequential sampling analysis table was also presented.