文献类型：期刊文献

中文题名：外来种无瓣海桑种内、种间竞争关系研究

英文题名：Study on Intraspecific and Interspecific Competition in Exotic Species Sonneratia apetala

作者：廖宝文[1] 李玫[1] 郑松发[1] 陈玉军[1] 郑馨仁[2]

第一作者：廖宝文

机构：[1]中国林业科学研究院热带林业研究所;[2]海南省东寨港国家级自然保护区

年份：2003

卷号：16

期号：4

起止页码：418-422

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(30070144)的内容之一

语种：中文

中文关键词：无瓣海桑;种内竞争;种间竞争;Hegyi单木竞争指数模型;生态入侵;红树植物;外来种;生物多样性

外文关键词：mangrove; Sonneratia apetala; intraspecific competition; interspecific competition

分类号：Q949.761.4;Q16

摘要：根据海南岛东寨港红树林区调查数据,采用Hegyi单木竞争指数模型研究外来种无瓣海桑(1985年引进)林内的种内、种间竞争关系。结果表明,无瓣海桑种内竞争强度随径阶的增大而增强,但胸径大于20cm后增强速度明显减缓。种间竞争强度排列顺序为:无瓣海桑>海桑>白骨壤>秋茄>红海榄>桐花树。乔木上层种间竞争强度与单株胸径的大小严格服从幂函数关系CI=ADB。同时对无瓣海桑是否造成生态入侵问题进行了讨论,认为目前不会造成生态入侵,但它对今后的生态影响仍需加强监测。
According to field investigation data in Dongzhai Harbour of Hainan Island, the intraspecific and interspecific competitions of exotic species Sonneratia apetala (introduced in 1985) mixed forest were studied by using Hegyi's competition index model for individual tree. The results show that the intraspecific competition intensity of S. apetala is positivelv correlated with the diameter scale of the trees, but beyond 20 cm in diameter the increment reduces obviously. The order of competition is: S. apetala>S. caseolaris>Avicenia marina>Kandelia candel>Rhizophora stylosa>Aegiceras corniculatum. The relationship between competition intensity and individual size of tree in the upper strata of trees followes closely the equation CI=ADB.The ecological effects of S. apetala are discussed. The authors consider that S. apetala can not make any ecological invasion in Dongzhai Harbour at present, but its effects in the future still need to be monitored.