山西翅果油树群落的多样性研究

用丰富度指数、多样性指数和均匀度指数对山西翅果油树群落的多样性进行了研究 ,并用相关分析研究了海拔与多样性指数及多样性指数间的关系 ,结果表明 :1 )在干扰强烈的生境中 ,翅果油树群落具有较低的丰富度指数、多样性指数的均匀性 ,而接近顶极群落阶段 ,多样性指数和丰富度指数也较低 ,但具有较高的均匀性 ;干扰强度较小的生境中 ,群落具有较高的丰富度指数、多样性指数和均匀性。2 )灌木层和草本层的丰富度、多样性指数和均匀度指数呈现多元化的趋势。 3)海拔对山西翅果油树群落多样性的影响不显著。

STUDY ON THE SPECIES DIVERSITY OF ELAEAGNUS MOLLIS COMMUNITY IN SHANXI

The species diversity of Elaeagnus mollis communities was studied using species richness,evenness and species diversity indices.In addition,relationship between elevation and species richness,relationship between evenness and species diversity,and relationship among species richness,evenness and species diversity indices were studied by means of correlation analysis.The results are as follows: There were lower species richness,species diversity and evenness in E.mollis communities under intensive disturbance habitats.However,there were lower species richness and species diversity and higher evenness indices when E.mollis community approached to the climax stage.Moreover,there were higher species richness,evenness and species diversity under disturbance situation to a small extent.The species richness,evenness and species diversity indices of shrub layer and herb layer had various forms in E.mollis communities in Shanxi.Elevation had no significant effect on the diversities of E.mollis communities in Shanxi.