浙江天台山落叶阔叶林物种多样性研究

应用物种丰富度、物种多样性指数和群落均匀度等指标对分布在浙江省天台山的落叶阔叶林物种多样性进行了研究.结果表明:木本植物的物种丰富度、物种多样性指数显著大于草本植物,群落均匀度两者无明显差异.植物生活型与物种多样性表现为乔木层的物种丰富度显著小于灌木层,它们之间的物种多样性指数差异不显著,而乔木层的群落均匀度显著大于灌木层.乔木层、灌木层的物种丰富度、物种多样性指数均明显大于草本层,乔木层、灌木层与草本层之间的群落均匀度差异不显著.从群落种-多度分布来看,木本植物、草本植物都符合对数级数分布,说明该群落富集种少,稀疏种多,群落的均匀度相对较小.

Study on species diversity of deciduous broad-leaved forest at Tiantai Mountain of Zhejiang Province.

The species diversity of the deciduous broad leaved forest at the Tiantai Mountain of Zhejiang Province is studied by using such indexes as species richness, species diversity and community evenness, and comes to the following conclusion. The species richness and diversity of the woody plants are obviously bigger than those of herbs, and both of their community evennesses have no great difference. The relationship between plant biotype and species diversity shows that the species richness of tree layer is obviously smaller than that of shrub layer and that there is no big difference between their species diversity indexes,and that the community evenness of tree layer is much bigger than that of shrub layer. The species richness and diversity indexes of tree layer and shrub layer are much bigger than those of herb layer. There is no remarkable difference among the community evennesses of tree,shrub and herb layers. In terms of the community species abundance distribution, both woody plants and herbs conform to the logarithmic series distribution, which indicates that the community has less dense species and more sparse species, and that the community evenness is relatively smaller.