天然筇竹林群落植物物种多样性研究

Species Diversity of Community Plants in Natural Qiongzhuea tumidinoda Forest

以云南省大关县天然筇竹林为研究对象,随机调查30个20m×10m的样方中植物物种多样性,结果表明,1)天然筇竹林植物物种丰富,共有维管植物94科180属257种; 2)筇竹林的分层结构中灌木层物种丰富度高于乔木层和草本层,但物种多样性指数和均匀度指数均低于乔木层和草本层; 3)筇竹林乔木—灌木和灌木—草本物种丰富度、Simpson指数和Pielou均匀度指数差异极显著,而乔木层和草本层各多样性指数差异性均不显著。

The plant species diversity in 30 samples of 20m x 10m from the natural Qiongzhuea tumidino- da forest in Daguan County was investigated randomly. The results showed that the plants species in the natural Qiongzhuea tumidinoda forest were rich with 257 species of vascular plants belonging to 180 gene- ra and 94 families, among which the species richness of shrub layer was higher than that of arbor layer and herb layer, but the species diversity index and evenness index were lower than that of arbor layer and herb layer, and that the species richness, the Simpson index and the Pielou evenness index of the trees - shrub and the shrub - herb were significantly different while there was no significant difference in the di- versity index of arbor layer and herb layer.