桂林石山次生灌丛植物种群分布格局及种间相关性研究

THE PATTERN OF SECONDARY SHRUBBERY AND INTER-RELATIONSHIP BETWEEN POPULATIONS IN THE STONY MOUNTAIN IN GUILIN, SOUTH CHINA

本文应用Greig-Smith邻接格子样方法取样和区组分析 ,对广西桂林石山次生灌丛的主要种群进行种间分布格局和种间相关性分析 ,结果表明 :1、广西桂林石山次生灌丛四种主植物种群九龙藤 (BauhiniaChampioniBenth)、薄叶鼠李 (RhamnusLeptophyllaSchneid)、小果蔷薇 (RosaCymosaTratt)和竹叶椒 (ZanthoxylumplanispinumS.etZ)种群在次生灌丛群落中呈集群分布趋势 ,并且各种群的集群分布格局的聚块强度大小与取样面积大小有关。2、广西桂林石山次生灌丛的主要种群间性状类似的种群比较容易表现为负相关关系 ,反之 ,往往表现为正相关 。

From the point of statistical ecology, the author detected and studied the pattern of secondary shrubbery and inter-relationship between Populations in the stony hill in Guilin by the methods of Greig-Smith contiguous grid of guadrats and block sizes analysis of rariance. The results were as fdlows:1.Among the populations of the secondary shrubbery in the place, four main populations , Bauhinia champion , Benth, Rhamnus Leptophylla Set I are tending towards Clunpy distribution , and the collection's intensity of clumpy distribution of various Populations is cencerned with the size of block. 2. Among such secondary shrubbery , the populations with similar character easily take on a negative inter-relation , otherwise , they take on a positive inter-realtion or their inter-relation becomes complex.