福建闽江源国家级自然保护区长柄石杉群落结构与物种多样性分析

Studies on the Structure and Species Diversity of Huperzia serrata Community in Minjiang Origin National Nature Reserve in Fujian Province

对福建闽江源国家级自然保护区长柄石杉群落的植物组成、生活型谱、垂直结构和物种多样性进行了调查分析,结果表明:群落有维管植物83科154属198种,生活型谱显示群落包括藤本在内的高位芽植物占总种数的66.67%,其中以小高位芽和矮高位芽植物占优势;地下芽也占一定比例,达14.14%,且以蕨类植物为主。群落垂直结构分化明显,分为乔木层、灌木层、草本层。物种丰富度指数、Simpson指数、Shannon-Wiener指数和Pielou均匀度指数分析表明:群落草本层与灌木层的物种丰富度、物种多样性指数明显大于乔木层与层外层,而群落各层次的均匀度无显著差异。

The species composition, the life form spectrum, spatial structure and species diversity of Huperzia serrata community in Minjiang Origin National Nature Reserve in Fujian Province were analyzed. The results showed that the community was composed of 198 vascular species belonging to 83 families and 154 genera. The life form spectrum showed that the phanerophytes including the vines accounted for 66.67 % of the total in which microphanerophyta and nanophanerophyta were dominant in the community.Geophytes accounted for 14.14%, which were mainly composed of pteridophyta.The vertical structure of community could be clearly divided into tree layer, shrub layer and herb layer.The species richness index, Simpson index, Shannon-Wiener index and Pielou evenness index were analysed. The results indicated that： The species richness and species diversity index of herb layer and shrub layer were obviously bigger than those of tree layer and vines. There was almost not difference of evenness index between the community layers.