鹰咀界天然林保护区甜槠林群落多样性研究

Studies on community diversity of Castanopsis eyrei forest in Yingzuijie Natural Forest Reserve

甜槠林是我国中亚热带地区地带性植被常绿阔叶林的主要类型之一,也是鹰咀界天然林保护区内代表性植被。我们在群落调查的基础上,通过统计计算分析将区内的甜槠林分成3大类别8种群落类型。并分别用物种丰富度指数(Dg1)、Simpson指数(D)、Shannon-Wiener指数(H′)、Pielou均匀度指数(J)、Alatalo均匀度指数(E)对各群落类型进行了物种多样性研究,结论为:群落多样性乔木层、灌木层(不包括乔木幼树、幼苗)>草本层,但乔木层多样性不一定大于灌木层,灌木层、草本层的分布均匀度较乔木层高,变异系数小。

Castanopsis eyrei forest is one of the main zonal vegetation types of evergreen broadleaved forests in the middle subtropical china, which is also a main vegetation type in Yingzuijie natural forest reserve According to the investigation, there are 8 kinds of community types of Castanopsis eyrei forest in the reserve, The species diversity of each community type has been studied by analyzing methods of species richness index （ Dg1）, Simpson index （D） , Shannn-Wiener index （ H＇ ） Pielou evenness （ J）, Alatalo evenness （E）. The results show that community diversity of tree layer and shrub layer （ excluding tree seedlings and saplings） are higher than that of herb layer, but the diversity of tree layer are not certainly greater than shrub layer. The eveness of shrub layer and herb layer distribution are higher than that of tree layer. And its variation coefficient is small.