宛田红锥林主要种群生态位研究  

The Niche of Dominant Species Population in Castanopsis hystrix Forest in Wantian,Guilin

作　　者：谢彦军[1] 何兰军[1] 刘明超[1] 陈志林[1] 梁树朝[1] 谢强[1] 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004

出　　处：《林业资源管理》2012年第1期54-60,86,共8页Forest Resources Management

基　　金：广西师范大学生命科学学院珍稀濒危动植物生态与环境保护省部共建教育部重点实验室研究基金项目

摘　　要：采用样方法、利用生态位宽度(Levins指数、Hurlbert指数、Feinsinger指数)、生态位相似性比例、生态位重叠对宛田红锥林不同资源位中20个主要种群的生态位进行了测定。结果表明,采用Levins,Hurlbert和Feinsinger三个生态位宽度计测公式结果基本一致;红锥,九节,倒挂铁角蕨的生态位宽度最大,对群落环境的适应和资源利用能力最强;宛田红锥林各主要种群间对生态因子的需求较相似,生态位相似性比例比较高,Cih值大于0.4的有109对,占57.4%;生态位宽度较大的种群间,生态位相似性比例一般较大,如红锥与球序鹅掌柴,九节与罗伞树的Cih值分别为0.709 7,0.741 6;宛田红锥林各主要种群间生态位重叠程度低,表明红锥林利用相同资源位而产生的种间竞争不激烈,群落处于稳定状态。A field plot sampling method was employed to investigate community niche of Castanopsis hystrix forest in Wantian,and parameters of niche breadth（Levins index,Hurbert index,Feinsinger index）,niche similarity,niche overlap were calculated to show community characteristics of 20 dominant species when the ecological suggestions of result were analyzed.The result showed that with the Levins index,Hurbert index and Feinsinger index,the result of niche breadths of the dominant species were almost the same;Castanopsis hystrix,Psychotria rubra and Asplenium normale niche breadth value being biggest proves that adaptive capacity to community＇s environment and the ability to use resources is the stongest;The niche similarities between dominant species population in Castanopsis hystrix forest in Wantian were much greater,and 109 sets for Castanopsis hystrix forest had the niche similarities（Cih） greater than 0.4,accounting for 57.4%,which shows that dominant species population in Castanopsis hystrix forest used similarly resource space and similarly ecological factors they occupy.The niche similarities between dominant species population increased with niche breadth.Between Castanopsis hystrix and Schefflera pauciflora,Psychotria rubra and Ardisia quinquegona,similarity values（Chi） were 0.7097 and 0.7416,respectively.The niche overlaps between dominant species population in Castanopsis hystrix forest in Wantian were much lower,which suggests less fierce interspecies competition in the forest,representing a stable community of the Castanopsis hystrix forest in Wantian.

关 键 词：红锥林 生态位宽度 生态位相似性比例 生态位重叠 

分 类 号：S718.5[农业科学—林学]