空间分布型的形成过程研究

STUDY ON THE SPATIAL DISTRIBUTION PATTERN FORMATION

从理论上研究了广义空间分布型和复合空间分布型的形成问题，解释了空间分布型的形成机理，并给出了１１种广义空间分布型和９种复合空间分布型；同时提出了空间分布型的３种判定方法：扩散系数法、空间相关法和参数变动法，它们可以用于区分常见的空间分布型，也可以用于判定分布型的形成过程；为研究空间分布型的形成机理和变化规律提供了有力的手段。对马尾松毛虫的空间分布型的研究结果表明，马尾松毛虫幼虫的空间分布型是复合负二项分布，个体群内是随机分布的，个体群内的个体是相互吸引的，个体群内个体的密度是Ｇａｍｍａ分布。

Three types of spatial pattern formation processes,distribution transformation,generalized distribution and compounded distribution,are studied.The result of 11 kinds of generalized distribution and 9 kinds of compounded distribution is listed.Three types of spatial pattern determination methods,index of dispersion method,spatial autocorrelation method,and parameter changing method,are proposed,these methods are also used to determine how the spatial distribution was formed.The spatial pattern formation of pine caterpillar is used as a simulation example,the result indicates that the spatial distribution of pine caterpillar is compounded negative binomial distribution the individual group distributed randomly,individuals aggregate in individual group,and the distribution of individuals in group is Gramma distribution.