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《Journal of Beijing Normal University(Natural Science)》 2006-01
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QUANTITATIVE ANALYSIS OF PLANT COMMUNITIES IN BAIHUA MOUNTAINS, WESTERN BEIJING

Xu Bin Zhang Jintun Yang Hongxiao Jiang Haifeng(College of Life Sciences,Beijing Normal University,100875,Beijing,China)  
Based on the field survey of plant quadrats,a quantitative analysis of the communities on Baihua Mountains,western Beijing is performed with TWINSPAN(two-way indicator species analysis) and DCA(detrended correspondence analysis) methods.50 quadrats collected from Baihua Mountains are classified into 10 types,representing 10 formations by TWINSPAN.The gathered groups of plant quadrates in the space of DCA ordination are consistent with the result of TWINSPAN,and this revealed a relationship between plant formations and environmental gradients.The axis 1 of the two-dimensional ordination diagram of DCA obviously reflects the gradient changes of elevation,humidity and temperature,and the trend of aspect.The axis 2 expresses the gradient changes of elevation.It is considered that the major factor that restrict the formation distribution of the mountain is elevation.
【Fund】: 国家自然科学基金资助项目(30070140)
【CateGory Index】: Q948.15
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