摘 要 ：本文在以6种分布型指数测定油松毛虫(Dendrolimus tabulaeformis Tsai et Liu)幼虫种群静态空间格局的基础上,通过聚类分析,可将油松毛虫幼虫种群在上树过程中的水平格局和垂直格局聚为两类:即前期型和中后期型;其6种分布型指数可分为三类:即(1)m*/m,CA,Iδ;(2)λ;(3)C,L。
Abstract:The paper is on the basis of measuring statically spatial pattern using six indices of distribution pattern. By cluster analysis, horizontal and vertical pattern in the course where Dendrolimus tabulaeformis larvae go up pine trees may be classified into two types of early and middlelate phases. The six indices were classified into three kinds: (1) m*m, CA, Iδ; (2) λ; (3) C, L. The cluster analysis can take out more information than using probability distributions to fit the statical pattern or only using single index for that purpose. Obviously there is practical significance in sampling decision.