杨树光肩星天牛成虫扩散格局的研究

应用标记－回收技术，系统收集了光肩星天牛成虫种群在时间序列过程中的扩散资料，按照动态分析方法，对天牛成虫在杨树农田林网中的扩散格局进行了研究，在求得扩散参数的基础上组建其扩散模型，并对影响天牛成虫扩散的因子进行了分析。

STUDY ON DISPERSAL PATTERN OF Anoplophora glabripennis ADULTS IN POPLARS

The dispersal pattern of Anoplophora glabripennis (Motsch.)adults was studied in Qintongxia,Ningxia autonomous region by mark recapture method.After the dispersal parameters have been worked out,the dispersal models were built.The results indicated that the adults population presented normal distribution from the estimation of deviation;the dispersal rate decreased with releasing time.The dispersal density reduced along with the increment of distance and duration;the population average dispersal distance was 106 3m.Analysis of dispersal reasons showed that the dispersion was brought about by environment elements,especially by density independence factors.The dispersal pattern was influenced by wind velocity and direction,and had much relation with temperature,but little with humidity.