浙江天台山七子花群落与其他森林群落物种多样性比较

Comparative studies on species diversity between Heptacodium miconioides community and other forest communities at Tiantai Mountain of Zhejiang Province

应用物种丰富度、物种多样性指数及群落均匀度等对分布在浙江天台山的七子花群落与马尾松群落、甜槠群落、苦枥木群落的物种多样性进行了比较。结果表明,对木本植物而言,七子花群落的物种丰富度比马尾松群落、甜槠群落大,比苦枥木群落小;七子花群落的物种多样性指数、群落均匀度均比马尾松群落、甜槠群落、苦枥木群落大;各群落的木本植物物种多样性均大于草本植物,一般地,七子花群落的乔木层、灌木层、草本层的物种多样性指数、群落均匀度比相应的马尾松群落、甜楮群落大,在七子花群落、马尾松群落、甜槠群落的垂直结构中,物种多样性指数由大到小的顺序为灌木层—乔木层—草本层。

Comparative studies were conducted on the species diversity between Heptacodium miconioides community and the communities of Pinus massoniana, Castanopsis eyrei and Fraxinus insu-laris distributed at Tiantai Mountain of Zhejiang Province according to species richness,species diver-sity index and community evenness. The results showed that in terms of woody plant,the species richness of Heptacodium miconioides community was bigger than those of Pinus massoniana and Castanopsis eyrei communities,but smaller than that of Fraxinus insularis community. Both the species di-versity index and the community evenness of Heptacodium miconioides community were greater than those of Pinus massoniana ,Castanopsis eyrei and Fraxinus insularis communities. The species diver-sity of the woody plant in all the communities was bigger than that of the herb plant. The species di-versity index and the community evenness of tree,shrub or herb layer in the ordinary plot of Heptacodium miconioides community were bigger than those in corresponding Pinus massoniana and Castanopsis eyrei communities. In the vertical structure of Heptacodium miconioides, Pinus massoniana and Castanopsiseyrei communities,the species diversity index were as follows in size order; the shrub lay-er>tree layer>herb layer.