苏州光福自然保护区木荷林群落学特征

Phytocoenological features of the Schima superba community in Guangfu Nature Reserve,Suzhou

在对苏州光福自然保护区木荷林典型群落调查的基础上,分析了该群落植物组成、结构、性质,以及各主要种群的相对密度、相对频度、相对显著度及重要值。结果表明:该木荷群落种类组成有32科42属46种,以乔木占数量优势,其中常绿植物占绝对优势,山茶科(Theaceae)、松科(Pinaceae)为优势科,木荷(Schima superba)、马尾松(Pinus massoniana)、杨梅(Myrica rubra)、短柄枹(Quercus glanduliferavar.brevipetiolata)为优势树种;层间植物较少,且均为木质藤本植物;生活型组成则以高位芽植物占显著优势(71.74%)。该群落的外貌由小型叶(69.57%)、单叶(80.43%)、草质叶(60.43%)为主的常绿高位芽植物所决定,具有明显的亚热带常绿阔叶林特点。该群落物种多样性指数偏低。群落乔木树种以中小径级占绝对优势,群落处于旺盛生长期。

The field investigation from the typical sample plots of Schima superba community in Guangfu Nature Reserve, Suzhou, was made the composition, structure, character, relative density, relative frequency, relative dominance and important values were analyzed. The results showed that there were 46 species, 42 genera and 32 families in the community flora. Theaceae and Pinaceae were the predominant families, and Schima superba, Pinus massoniana, Myrica rubra and Quercus glandulifera var. brevipetiolata were the predominant species in these families. Evergreen plants hold a biggest position, e.g. , evergreen microphanerophytes and nanophanerophytes, simple, miniature, the grassorthe leather-texture leaves, which demonstrated characteristies of the evergreen broad leaf forest in the subtropical region of China. The index of species diversity of the community was lower. Seedlings and young saplings accounted for the majority of the community. It showed that the community is in the vigorous growing stage.