Abstract: Emmenopterys henryi , an endemic species in China , being one of the grade Ⅱ national key conservation rare and endangered plants . Based on the data collected from sample plots, the community structure features in Dapanshan National Natural Reserve of Zhejiang Province were analysed. The results showed that the companion species of E . henryi were evergreen and from Lauraceae and Camelliaceae . The richness index , species diversity index and evenness index in the E. henryi community were low, but ecological dominance index was high . In the community , dominant life form, dominant leaf size , dominant leaf form, dominant leaf texture was phanerophytes, mesophyll , single leaves, herbaceous leaves respectively and whose percentage was 75.9%, 53.97%, 74.70%, 63.86% respectively. The second leaf sizewas microphyll, whose percentage was 36.51%. The spatial patterns of E. henryi population mostly conformed to clump distribution, and the tree layer could be easily divided into 3 sublayers in terms of height. The regeneration of population of E. henryi was poor and the population size was declining.

Key words: Emmenopterys henryi

摘要： 对浙江省大盘山国家级自然保护区香果树群落结构特征以及香果树种群结构进行了调查研究。研究表明, 香果树主要伴生种为具有热带性质的樟科和山茶科的一些物种; 该群落乔木层、灌木层、草本层的物种丰富度、多样性、均匀度都偏低, 优势度相对较高; 其生活型以包括藤本在内的高位芽植物占绝对优势, 达75.90% ; 叶级以中型叶为主, 占53.97% , 小型叶次之, 占36.51% ; 叶型以单叶占有较大的优势, 达74.70% ; 叶质以纸质叶为主, 占63.86%。香果树在群落水平结构上整体成聚集分布状态, 垂直结构上明显分成3 个亚层; 种群更新不良, 具有明显的衰退趋势。

关键词: 香果树, 群落特征, 种群结构, 大盘山自然保护区FONT