川西平原农田啮齿动物群落变量的模拟研究  

Dynamics of The Farmland Rodent Communtty in the Western Sichuan Plain: Simulation of Commutity Variables

作　　者：曾涛[1] 曾宗永[1] 郭海燕[1] 吴鹏飞[1] 蔡红霞[1] 梁俊书[1] 

机构地区：[1]四川大学生命科学学院,成都610064

出　　处：《四川大学学报（自然科学版）》2004年第1期164-168,共5页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(3880589;39270121)

摘　　要：利用MonteCarlo方法,模拟了川西平原农田啮齿动物群落变量的总和、年间和月间变动情况及统计学特征,其变量是:物种数、生物量、物种多样性和均匀性.真实群落4个变量的所有值均在模拟群落变量的95%置信区间内.物种数和物种多样性显示出了相似的变动规律.真实群落4个变量与模拟群落4个变量也显示出了相似的变动规律.当零假设为这些变量服从正态分布时,用单样本Kolmogorov Smirnov方法检验,得到的结果与偏度和峭度显示的结果并不完全一致.结果说明,要估计一个变量的置信区间,需要有足够大的样本含量.By the Monte Carlo method computer simulation is condocted to delineate the overall,annual and monthly fluctuations,and the statistical characteristics of 4 variables of the farmland rodent community in the Western Sichuan Plain,including the number of species,biomass,species diversity and evenness.The result show that all of the values of the real community variables are between the 95% confidence intervalsof 4 simulated variables.The numbers of species and species diversity of the simulated community show the similar fluctuation patterns.The 4 variables of both the simulated community and the real community also show the similar fluctuation patterns.The results of one-sample Kolmogorov-Smirnov test are not always consistent with those skewness and kurtosis of the simulated community variables show.The results suggest that in order to estimate the confidence interval of the number of species and biomass,a larger sample size (e.g. n≥50) is needed.

关 键 词：计算机模拟 MONTE Carlo法 群落变量 群落动态 概率分布 

分 类 号：Q958[生物学—动物学]