【摘要】 森林群落的演替是以群落结构的变化为表现特征的。本项研究系统地研究鼎湖山森林群落的不同演替阶段的代表性群落在群落演替过程中的群落结构动态。本文以永久样地１２年的前后调查为基础，并比较１９５５年的调查结果，研究了鼎湖山地带性植被季风常绿阔叶林厚壳桂群落在演替过程中的结构动态。结果表明该群落在演替过程中，其种类结构没有大的变化，但优势种群的个体数量有一定的变化。阳生性的类群更趋于衰亡，中生性类群更趋壮大。在群落的组成结构上，其物种多样性指数较为稳定，而生态优势度指数略微下降和群落均匀度指标略微增加，反映了该群落作为接近地带性气候顶极类型的相对稳定的特征。更多还原

【Abstract】 Succession of forest community is characterized by the changes in community organization.In this paper,with twice field surveys on the same longterm site in 1980 and 1992,the organization dynamics of Cryptocarya community,Dinghushan zonal climax of monsoon evergreen broadleaved forest,was studied.The results are as follows:In the community,there was no obvious change in species component though the individual quantities and distributions of many dominant species changed a lot.Heliophytes were declining and mesophytes were developing further.As for the community composition structure,the index of species diversity was stable with the index of ecological dominance dropping a little,and with the community evenness increasing slightly.All these results suggest that the community had the feature of relative stability,as a vegetation type close to the zonal climax has.更多还原