广西红树林优势种群生态学研究  

Study on the dominant mangrove population in Guangxi

作　　者：姚贻强[1] 梁士楚[1] 李桂荣[1] 毕秀莲[1] 田永航[2] 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004 [2]贵州大学农学院,贵州贵阳550025

出　　处：《生态环境》2008年第3期1082-1085,共4页Ecology and Environmnet

基　　金：国家自然科学基金项目(30660036);广西自然科学基金项目(桂科自0728096);广西教育厅科研项目(200607LX241)

摘　　要：木榄(Bruguieragymnorrhiza)和红海榄(Rhizophorastylosa)是红树林乔木层的优势种,起着重要的生态功能。文章采用常用的生态位宽度、生态位重叠计测公式和Hegyi竞争指数模型,研究木榄和红海榄种内以及种间的相互关系。结果表明,木榄和红海榄有极其相似的生态位宽度和极高的生态位重叠关系,Hegyi竞争指数模型计算的竞争强度也证明,木榄和红海榄之间存在有激烈的生存竞争,并预测到木榄和红海榄将长期共存,但木榄在竞争中有微弱的优势。Bruguiera gymnorrhiza and Rhizophora stylosa which are dominant species in arbor layer of mangrove undertake mostly ecological function. Analyzed the intraspecific and interspecific relationship ofBruguiera gymnorrhiza and Rhizophora stylosa with commonly used niche calculation formula and Hegyi single-tree competition index mode, the results showed that they had extreme similar niche breadth and high value of the niche overlap index. The Hegyi single-tree competition index also showed there was in- tense competition between Bruguiera gymnorrhiza and Rhizophora stylosa to survive. And it could be prognosticated that Bruguiera gymnorrhiza and Rhizophora stylosa will live together for a long time, while Bruguiera gymnorrhiza will have a little superiority during this competition.

关 键 词：木榄 红海榄 生态位宽度 生态位重叠 竞争指数 

分 类 号：Q948[生物学—植物学]