【摘要】 运用各多样性指数 (丰富度指数 :S、dMa、dMe;多样性指数 :λ、H′、NO、N1、N2 ;均匀度指数 :J、ES、Eh、E2 ,1、Ea)对样地群落物种多样性进行研究 ,结果表明 :牛姆林天然林群落普遍具较高的物种多样性 ,且群落空间各部分的物种多样性程度大多表现为灌木层 >乔木层 >草本层或层间植物 ;并显示了多优势种群落的整体多样性水平高于单优势种群落的整体多样性水平 ,且在一定程度上反映出牛姆林不同类型天然林的物种多样性程度为 :针阔叶混交林 >常绿阔叶林 >杜鹃矮林 ;对物种多样性指数的比较分析 ,还揭示了均匀度指数在物种多样性研究中的重要地位 .更多还原

【Abstract】 Several species diversity indexes ( S?d Ma ?d Me ;λ?H′?N O?N 1?N 2;J?E S?E h?E 2,1 ?E a ) were used to measure the species diversity of the natural forest in Niumulin Nature Reserve. The results indicated that the species diversity in different layer of communities was in the following order: shrub layer>tree layer>herb layer or interstratum plant; Viewed the community as a whole, the species diversity of community which had a few dominant species was higher than that had single dominant species, and the species diversity of the different kind of natural forests was in the following order: deciduous and evergreen broad-leaved forest>needle and broad-leaved mixed evergreen forest>evergreen broad-leaved forest>Rhododendron brushwood; It is also revealed that the evenness plays an important role in the research of species diversity. Above all it comes to a conclusion that the level of species diversity of natural forests in Niumulin Nature Reserve was higher.更多还原