海南俄贤岭石灰岩山地海南凤仙花所在群落植物区系及生态特征  

Floristic and Ecological Characteristics of the Community with Impatiens hainanensis in Exianling Limestone Moutain,Hainan

作　　者：秦新生[1] 何科稣[1] 刘立武[2] 孙君梅[3] 齐旭明[4] 施浩[4] 

机构地区：[1]华南农业大学林学院,广东广州510642 [2]中南林业科技大学林学院,湖南长沙410004 [3]琼台师范高等专科学校数理系,海南海口571127 [4]海南省霸王岭国家级自然保护区管理局,海南昌江572722

出　　处：《华南农业大学学报》2012年第3期361-367,共7页Journal of South China Agricultural University

基　　金：海南省自然科学基金(311058);海南大学热带作物种质资源保护与开发利用教育部重点实验室开放课题(2010hckled-11);国家科技基础性工作专项(2008FY110400;2006FY110500-1)

摘　　要：通过样方调查对海南俄贤岭石灰岩山地海南凤仙花Impatiens hainanensis所在群落的植物区系及生态特征进行了分析.结果表明,在总面积为800 m2的样地中,共记录了维管植物46科76属83种(含种下单位),以兰科(16种)、水龙骨科(5种)和大戟科(4种)等为优势.属的区系成分以泛热带分布(18属)和热带亚洲(印度-马来西亚)分布(15属)为主.群落以灌木层(29种)和草本层(45种)为主,灌木层以海南大戟Euphorbia hainanensis为优势,草本层以玫瑰毛兰Eria rosea占优势;藤本层植物9种,以眼树莲Dischidia chinensis为优势.生活型以矮高位芽(57种)为主.频度等级分布规律为A>B>D>C>E,属于A级的种类最多,有41种,其中草本层20种.与相同生境的海南大戟灌丛群落进行了比较,并对其有效保护提出了初步建议.Floristic and ecological characteristics of led based on community investigation in Exianling were 83 vascular species, subspecies, and varieties the community with Impatiens hainanensis were studlimestone moutain, Hainan. The result showed there belonging to 76 genera and 46 families in 8 plots with a total area of 800 m2. The dominant families were Orchidaceae （including 16 species）, Polypodiaceae （5 species）, and Euphorbiaceae （4 species）. The distribution types of the genera in the community were mainly Pantropic（ including 18 species） and Tropic Asia （India-Malasia） （15 species）. The shrub layer （including 29 species） and herb layer （45 species） were the main component of the community. There were 9 species in the liana layer. The dominant species of shrub layer, herb layer, and liana layer were Euphorbia hainanensis, Eria rosea, and Dischidia chinensis, respectively. The life form in the community was dominated by nanophanerophytes （including 57 species）. The order of the frequency distribution class was A 〉 B 〉 D 〉 C 〉 E. The A-level frequency was dominant（ including 41 species）. The community characteristics between I. hainanensis and Eu. hainanensis were compared. Some preliminary suggestions were also put forward on how to effectively protect L hainanensis.

关 键 词：海南 石灰岩 群落 海南凤仙花 

分 类 号：Q948[生物学—植物学]