东莞市银瓶嘴自然保护区苏铁蕨群落特征  

The Characteristic of Community with Brainea insignis in Yinpingzui Natrue Reserve,Dongguan

作　　者：谭观朱[1] 冯志坚[2] 何仲坚[3] 郑洲翔[2] 赵俊菁[2] 

机构地区：[1]广州土人景观顾问有限公司,广东广州511431 [2]华南农业大学林学院,广东广州510642 [3]广州市园林科学研究所,广东广州510450

出　　处：《华南农业大学学报》2006年第1期121-123,共3页Journal of South China Agricultural University

基　　金：东莞市林业局珍稀濒危植物调查与保护研究项目

摘　　要：苏铁蕨Brainea insignis属于国家Ⅱ级重点保护植物.在银瓶嘴自然保护区1 600 m2样方中有维管植物60科88属99种.种子植物区系以热带分布区类型为主,占83.95%.群落可分为乔木层、灌木层、草本层和层间层.乔木层鼠刺Itea chinensis的重要值最大,为35.05%;灌木层中苏铁蕨的重要值最大,为38.61%.说明苏铁蕨在群落中占有重要地位.Brainea insignis is one of the fern species belonging to the second class national key protected plants. According to the investigations in 16 sample plots of Dongguan City, the communities consist of 99 species totaling 1 600 m^2 in Yinpingzui Nature Reserve , 88 genera, 60 families of vascular plants. Analysis of floristic geographical elements showed that the percentage of tropical elements is high, accounting for 83.95% of the total numbers of genera. The community can be structurally divided into arborous layer, shrub layer and herbaceous layer. In the arborous layer ltea chinensis, with an importance value of 35.05%, is the biggest, and in the shrub layer the biggest one is Brainea insignis with an Ⅳ of 38.61%. It was suggested that Brainea insignis played an importanst role in the community.

关 键 词：苏铁蕨 群落特征 银瓶嘴自然保护区 

分 类 号：Q948.5[生物学—植物学]