淮河源栎类天然次生林群落结构特征

Community Structure Characteristics of Natural Secondary Oka Forest in Source of Huaihe River

在淮河源生态功能区设置4个典型样地调查栎类天然次生林群落结构特征,分析该群落的丰富度、多样性、均匀度、种间相遇率。结果表明,群落内灌木层物种的丰富度最高,其次为草本层,最后是乔木层。4个典型样地的丰富度、多样性、均匀度指数差别不大,栎类天然次生林群落结构稳定,群落内种类组成较复杂,各种群在生态位上较协调。

In ecological function area of Huaihe River source,four typical samples were set up to investigate the structure characteristics of the natural secondary forest community,and the richness,diversity,evenness and interspecies meeting rate of the community were analyzed.The results showed that the species richness was the highest in the community,followed by the herb layer,and finally the tree layer.There was little difference among richness,diversity,evenness index of the four typical sample plots,community structure of oak natural secondary forest was stable,within the community species composition were more complicated,various groups were more harmonious on the ecological niche.