檫角丽细蛾空间分布型及其应用的研究

A Study on the Spatial Distribution Patterns of Caloptilia ( Rhadinoptilia ) sassafrasicola and thire Application

本文采用7种聚集度指标法测定了檫角丽细蛾卵和幼虫的空间分布型。结果表明卵和幼虫在檫树人工林内都呈聚集分布。幼虫分布的基本成份是个体群,个体间相互排斥。卵分布基本成份是疏松的个体群。应用Iwao’s方法,分析并计算林间调查的最适抽样数,进行了幼虫序贯抽样的计算。

Spatial distribution patterns for eggs and larvae of Caloptilia(Rhad-inoptilia ) sassaf rasicola Liu et Yuan were measured by means of seven indexes of aggregation. The results show that the spatial distribution pattern of eggs and larvae obey aggregation distribution. The basic component of spatial distribution pattern is loose colony. By Iwao's methods the optimal sampling number of forest survey is analysed and calculated the sequential analysis is also applied.