秦岭中段典型群落多样性分析

Analysis of Typical Community Diversity in the Middle of Qinling Mountains

应用Shannon-wiener多样性指数、Pielou均匀度指数、Margalef丰富度指数对林区的典型林分(锐齿栎林、油松林、华山松林)群落结构和多样性进行了分析,结果表明:乔木层、灌木层、草本层多样性均表现为:华山松林>油松林>锐齿栎林;从不同群落类型方面来看,由茜草+凤毛菊-苦糖果+悬钩子-油松+梾木组成的油松林群落丰富度最大,处于演替的进展阶段,由蕨类+禾本科-菝葜+忍冬-锐齿栎组成的锐齿栎林群落丰富度最小,群落的演替有逆行进展的趋势。

Community structures and diversities of the typical stands （ such as Quercus aliena var. acuteserrata, Pinus tabulaeformis, P. armandii ） of Huoditang forest farm, Qinling Mountains were an- alyzed by indices of Shannon-Wiener diversity, Pielou evenness, and Margalef richness. The results showed that diversities of the trees, shrubs, herbers in different forest stands were in the order of P. ar- rnandii〉P, tabulaeformis〉Q, aliena var. acuteserrata. From the perspectives of different community types, the highest community richness appeared in the P. tabulaeformis community composed of Rubia cordi f olia ＋ Prunus mume - Malus baccata ＋ Rubus corchori f olius --P. tabulae f ormis＋ Cornus florida, which was in the developing succession stage, while the lowest community richness appeared in the Q. ali- ena var. acuteserrata community, composed of Pteridoph yta＋ Poaceae-- Smilax china ＋Lonicera semper- virens--Q, aliena var. acuteserrata, which was in the reverse succession stage.