甘南玛曲植物群落的多元分析与环境解释
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MULTIVARIATE ANALYSIS AND ENVIRONMENTAL INTERPRETATION OF PLANT COMMUNITIES IN MAQU, SOUTH GANSU
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    摘要:

    应用无偏对应分析(DCA)及二岐指示种分析(TWINSPAN)对玛曲178个植物群落样方资料进行了多元分析排序和数量分类,并应用植物群落的排序值与环境参数的多元回归分析给出各群落类型的定量环境解释,探讨了该区植物群落的基本类型、生态梯度及其与环境因子的定量关系。结果表明,玛曲的植物群落类型及其分布主要取决于热量和湿度,并可通过环境参数的数字表达式定量地确定。

    Abstract:

    In this paper,1 78 plant community ~mphs collected from Maqu,South Gansu were mukivarlately nalysed by the detranded correspondence alaalysis(DCA)and the twoway indicator species analysis(TW INSPAN ),The quantitative environmental interpretation of various plant community types is given by the multivariate regression an alys is which connects the ordination scores with environmental parameters,The primary plant community types,~ological gradients,and thek quantitative relations with the environmental factors were studied.It is shown by the analysis that the vegetation types and their distribution are maily determined by the therm al and moisture gradients.They are quantitatively determined by the mathematical formu[as Which co ntains environmentaI pa rameters.

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王孝安.甘南玛曲植物群落的多元分析与环境解释.生态学报,1997,17(1):61~65

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