角菱背网蝽空间格局及抽样技术研究

A Study of the Spatial Distribution Pattern of Eteoneus Angulatus Drake et Maa and of lts Sampling Method

本文运用比较频次法和聚集度指标法，研究了角菱背网蝽若、成虫的空间格局，研究表明其分布属于负二项分布，分布的基本成份是个体群．林间抽样方法比较结果，平行线、对角线取样法精度较高，适用于林间虫情调查．

Spatial distribution patterns for the nymphs and adults of Eteoneus angulatus Darke et Maa Were measured by Chisquare test of frequency distribution and by th indices of aggregation. The results show that the spatial distribution pattern of Eteoneua angulatus obeys the common negative binomial distribution,with the basic component of spatial distribution being colony;and the results of five sampling methods show that the methods of parallel and diagonal lines are the best.