大荫山米槠林的群落物种多样性研究

Species Diversity of Castanopsis carlesii Communities in Dayinshan Mountains

在浙江省衢州市大荫山的米槠林中分设了10个调查样地。对各样地乔木、灌木、草本不同层次的物种丰富度、物种多样性指数和群落均匀度所进行的分析,结果表明:大荫山米槠林木本植物的物种丰富度(99种)和物种多样性指数明显大于草本植物(18种)。在该米槠林的分层结构上,其灌木层的物种丰富度指数、物种多样性指数和群落均匀度指数均大于乔木层,此两层的物种丰富度和物种多样性差异显著。其林分灌木层的物种丰富度指数和物种多样性指数均大于草本层,此两层的物种丰富度和Shannon-W iener指数差异极显著,S imp-son指数差异显著;其米槠林乔木层和草本层的物种多样性差异不明显。该林分各层次间的群落均匀度差异不显著。

The species diversity of Castanopsis carlesii communities in Dayinshan Mountains of Quzhou city in Zhejiang province was .studied by surveying in 10 sample plots. The species richness index, species diversity index and evenness of tree layer, shrub and grass were analyzed. The results showed that the species richness index and diversity index of woody plants were significantly higher than grass layer. The species richness index, species diversity index and evenness of shrub layer were significantly higher than the tree layer. The species richness index and species diversity of shrub layer were higher than grass layer. The differences between shrub layer and grass layer on species richness, Shannon-Wiener index and Simpson index were all significant. The difference between tree layer and grass layer was not significant in diversity. The differences in evenness of different layers were not significant.