中亚热带石栎-青冈群落优势种种间关联研究  

Interspecifi c associations of dominant species in a Lithocarpus glaber-Cyclobalanopsis glauca forest community in subtropical China

作　　者：赵丽娟[1] 项文化[1] 

机构地区：[1]中南林业科技大学生命科学与技术学院,湖南长沙410004

出　　处：《中南林业科技大学学报》2014年第6期88-93,共6页Journal of Central South University of Forestry & Technology

基　　金：国家林业公益性行业专项项目(201304317);国家自然科学基金项目(31170426)

摘　　要：应用方差比率法、χ2检验、Pearson相关系数和Spearman秩相关系数检验等数量分析方法对大山冲石栎-青冈群落的10个优势种组成的45个种对间的关联性进行定量研究。多物种总体关联性检验结果显示10个优势种总体种间呈较显著的正关联,该群落结构较为稳定;χ2检验结合V值(种对间联结指数)显示26个种对正关联,19个种对负关联,正负关联比为1.372;Spearman秩相关系数检验灵敏度较Pearson相关系数高,其中29个种对正相关,16个种对负相关,正负关联比为1.813。45个种对中有63%的种对联结关系未达到显著水平,说明种对间存在较强的独立性,群落种间联结相对松散,这可能与该群落处于稳定的亚顶级阶段有关。根据基于秩相关系数绘制的星座图和χ2检验将10个种群被分为3个生态种组。We selected 10 dominant species（45 species-pairs） according to important v alues and quantitatively researched interspecifi c associations and correlations by using variance ratio analysis,χ2 test,Pearson correlation coeffi cient and Spearman rank correlation coeffi cient test. Signifi cantly positive correlations existed among the 10 dominant species,which suggested that the community structure was stable. The interspecifi c correlations showed that 26 species-pairs were positive associations,while 19 species-pairs had negative associations,and the ratio of positive and negative correlations were 1.372 based on χ2-test and V values（species-pairs correlation index）. The Spearman correlation coeffi cient test was more sensitive than Pearson correlation coeffi cient test,and Spearman correlation coeffi cient test refl ected there were 29 pairs were positive correlations,16 pairs had negative correlations with the positive /negative correlation coeffi cient ratio 1.813. It was not signifi cant association for 63% of species pairs and showed that they were relatively loose and independent,which may be related to the community was close to climax community. Ac cording to χ2-test and constellation diagram of Spearman rank correlation coeffi cient network,the 10 species were divided into three ecological species groups.

关 键 词：常绿阔叶林 种间联结 方差比率法 相关系数检验 星座图 生态种组 

分 类 号：S718.54[农业科学—林学]