鄂尔多斯高原西部几种荒漠灌丛群落种间联结关系的研究

STUDY ON THE INTERCONNECTIONS AMONG SEVERAL COMMUNITIES OF DESERT SHRUBS IN WEST ORDOS PLATEAU

采用ＰＣ、ＰＣＣ、ＡＣ、Ｘ２和ｒ等公式对鄂尔多斯高原西部５种典型荒漠灌丛群落种间联结系数的求算，通过这些种间的相互关系，阐述了这些物种对生境要求的差异和分布特点，本文的研究结果对与建立在种群关系基础上的荒漠植被的研究具有重要的意义。

Percentage co occurrence (PC),point correlation coefficient (PCC),association coefficient (AC),X 2 and Pearson r formulaes are used to measure interconnection among 5 communities of desert shrubs in west erdos plateau.Based on the measured results of interspecific association,the distribution character of shrub species and their differences of requirement to habitat were elaborated.The results are significant for researching desert vegetation,which are based on the relationships of population.