作　　者： ; ; ; ; ;

机构地区： 南京大学生命科学学院

出　　处： 《南京林业大学学报（自然科学版）》 2003年第6期35-39,共5页

摘　　要： 采用F 检验和t 检验,对宝华山5种典型群落乔、灌、草、藤4种生活型植物的物种丰富度、物种多样性指数、均匀度指数的波动幅度及其均值的差异性进行了研究,分析比较了群落间不同生活型物种对群落的差异性反应。通过对比研究发现,不同生活型物种均匀度指数之间的差异性比相应的物种多样性指数要大。另外,在计算群落的物种多样性和均匀度指数时,使用重要值作为测度指标比使用个体数更能提高差异的检出水平。 The means and variance range of species richness,species diversity and evenness indices of four life forms(trees,shrubs,herbages,vines) in five typical communities in Baohua Mountain Natural Reserve were analyzed with Ftest and ttest analysis.The result shows that the variance range of species richness of herb is significantly greater than that of vine and greater than that of trees,the variance range of species richness of shrubs is significantly greater than that of vine,but the variance range of species richness of shrubs and trees is not significant.Though the environment is quite different in the 5 communities,the variance range and average of species diversity indices of trees,shrubs and herbs do not vary obviously.Though the means of evenness indices for each life form do not show obvious difference,the variance range of evenness indices of trees and shrubs is much greater than that of herbs and vines,which shows that the indices of species evenness of trees and shrubs are more effective than vines and herbs in representing the difference of community type and disturbance regime.Besides,the research shows that the indices based on importance value are more significant than those on individuals.

关 键 词： 宝华山 群落 物种多样性 差异性分析 均匀度 波动幅度 物种 生活型

领　　域： [农业科学]