南昆山观光木所在群落优势树种的种间联结性 Interspecific associations of dominant trees in the communities with Tsoongiodendron odorum on Nankunshan

Document Type

Journal Article

Publication Date

2008

Keywords

南昆山, 观光木, 物种间联结性, 生态种组, Nankunshan, Tsoongiodendron odorum, Interspecific association, Ecological species groups

Abstract

以广东省南昆山自然保护区观光木所在的群落为研究对象，应用聚类分析和种间联结性分析法研究了4 800m2总样方面积中的32个群落优势种群的生态种组及种群间联结性特点。聚类分析结果显示，32个种可划分为4个生态种组：1) 轮叶木姜Litsea verticillata和唐竹Sinobambusa tootsik；2) 狗牙锥Castanopsis lamontii；3) 罗浮锥Castanopsis fabri、鸭公树Neolitsea chuii、腺叶桂樱Laurocerasus phaeosticta、石笔木Tutcheria championi和毛桂Cinnamo-mum appelianum；4) 罗浮柿Diospyros morrisiana、越南山矾Symplocos cochinchinensis、狗骨柴Tricalysia dubia和观光木Tsoongiodendron odorum等24个种。方差比率法表明32个物种间具有总体上的正联结性。根据X2检验、联结系数(AC)、种对共同出现百分率(PC)和点相关系数(Ф)检测结果，在496个种对中，绝大多数种对表现为弱联结性或无联结性，表明该群落优势种群间的空间分布具有明显的独立性。

The thirty-two dominant populations in the communities with Tsoongiodendron odorum, with a total area of 4 800 m2,on Nankunshan of Guangdong Province were studied by clustering analysis and interspecific associations analysis. Four ecological groups were divided by clustering analysis: 1) Litsea verticillata and Sinobambusa tootsik; 2) Castanopsis lamontii; 3) Castanopsis fabri, Neolitsea chuii, Laurocerasus phaeosticta,Tutcheria championi and Cinnamomum appelianum; 4) Other twenty-four species including Diospyros morrisiana, Symplocos cochinchinensis, Tricalysia dubia and Tsoongiodendron odorum. The results of the variance ratio analysis for the thirty-two populations showed that they were generally positive associated. Based on the results of X2 test, the percentage of co-occurrence(PC), the association coefficients(AC), and the point correlation coefficients(Ф), most of the 496 species pairs were weak interspecific associated or non-associated. It was indicated that the spatial distributions of these dominant species in the communities studied were relatively independent.

Source Publication

华南农业大学学报Journal of South China Agricultural University

Volume Number

29

Issue Number

1

ISSN

1001-411X

First Page

57

Last Page

62

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