群落二维格局分析的两种方法

群落二维空间格局研究能够更好地揭示群落的特征，但在分析方法上有较大的困难。用垂直相交的两条样带在两个方向上同时取样的二维取样法，获得数据，用DCA排序与格局分析相结合的方法，得到群落不同格局规模斑块的长、宽及面积，实现二维格局研究。在亚高山草甸群落格局研究中应用表明，两个方法均是有效的。

Two methods for two-dimensional pattern analysis of community

Two-dimensional pattern analysis of community is important in understanding community structure,yet the analysis methods are limited.The two-dimensional sampling using two transects meet at right angles was applied to get quadrat data in this study.The detrended correspondence analysis ordination technique combining pattern analysis method is used for community pattern analysis here.The length,width and area of patches at different scale of pattern for communities were resulted from the analysis.The application of these two methods to the pattern analysis of subalpine meadow community shows that they are effective techniques in community pattern study.