江西官山自然保护区巴东木莲群落特征

Structure of Manglietia patungensis Community in Guanshan National Nature Reserve, Jiangxi Province

对江西省官山国家级自然保护区内巴东木莲(Manglietia patungensis)群落特征进行调查和分析,结果表明,保护区内巴东木莲群落物种组成丰富,区系成分复杂,热带分布属明显多于温带分布属。群落组成以高位芽植物为主,地上芽植物次之,植物叶的性质以中小型叶、单叶、革质、非全缘为主。群落地上成层现象明显,下木层物种多样性高于乔木层。巴东木莲种群结构稳定,呈集群分布。

The investigation of characters of Manglietia patungensis Community in Guanshan National Nature Reserve of Jiangxi Province showed that： there are abundant species components and complicated floristic elements in M. patungensis community. In terms of genus geographical composition, more of them are distributed in tropical zones. According to Raunkiaer＇s statistics of life-form, the phaenerophyte in the community composition take primary position and the hemicryptophyte are the second. Regarded to the leaf characteristics, the community is mainly composed ofmesophyll, microphyll, simple leaf, sclerophyll and unentire leaf. The vertical structure of community is relatively complicated, where the species diversity of undergrowth layer is apparently greater than tree layer. The structure of whole M. patungensis community is stable and contagious distribution.