关于Iwao m^＊ -m回归模型在昆虫种群空间分布型的应用分析  

Analysis on the Application of Iwao＇s m^＊ -m Model on the Study of Distribution Pattern of Insect Population

作　　者：兰星平 

机构地区：[1]贵州省森林病虫检疫防治站,贵阳550001

出　　处：《贵州林业科技》2007年第1期1-8,共8页Guizhou Forestry Science and Technology

摘　　要：本文对:Iwao m*-m回归模型在检验昆虫种群空间分布型中的应用,以及存在的问题进行了系统研究,结果表明:(1)回归参数α和β是用来控制m*与m变化程度的参变量,不具备特定的生物学含义。(2)用多项式回归模型改进的Iwao m*-m模型只是在一定的程度上提高了模型的相关关系,使调查的资料可满足于检验昆虫种群空间分布型的需要,改进模型中的回归参数同样不具备特定的生物学含义。(3)Iwao模型和改进的Iwao模型检验昆虫种群空间分布型的依据是在m的取值范围内,m*与m的比值(m*/m)是否偏离1来决定的。Applications and problems of Iwao~ m ＊ - m model and its improved model for examining spatial patterns of insect population was discussed in the paper. It was concluded that： （1） The parameters αandβ in Iwao＇s m^＊ - m model are used for describing the relation between m^＊ and m, and they have no particular biological meaning; （2） The improved model of Iwao＇s m^ ＊ -m increase only the correlative relationship of m^＊ -m regression equation, and the two parameters have no particular biological meaning too ; （3） The laws of Iwao＇s model and its improving model for testing the spatial patterns of insect population are according to the ratio values of m^＊/m. When m^＊ / m 〉 1, it indicate an aggregation distribution, and m^＊/m 〈 1 uniform distribution, and m^＊/m = 1 random distribution.

关 键 词：Iwao m^＊ -m模型 昆虫种群 空间分布型 应用分析 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]