中文摘要：

本研究以荒漠草原优势种无芒隐子草为研究对象,采用地统计学分析方法在GS＋软件平台对围封区（CK）、划区轮牧区（RG）和自由放牧区（CG）无芒隐子草空间异质性进行了研究,结果如下：无芒隐子草密度均值表现为RGRG〉CG。在CG区,无芒隐子草空间异质性主要受结构性因素控制;在划区轮牧条件下,无芒隐子草空间异质性受随机因素导致的空间变异比较明显,结构比为0.679。在对照区和划区轮牧区内,无芒隐子草空间分布的特征表现为较大的片状分布,自由放牧导致无芒隐子草若干密度较小的斑块与密度较大的斑块镶嵌分布,其空间分布状态呈现网状。

英文摘要：

The paper studied on spatial heterogeneity distribution of Cleistogenes songorica in enclosed area（ CK）,rotational grazing area（ RG） and continuing grazing area（ CG） using GS ＋ software and methods of geostatistical analysis,which took the dominant specie Cleistogenes songorica as research object. The results showed that,density of Cleistogenes songorica showed RG〈 CK 〈CG,variation coefficient of spatial distribution density was RG〈 CG〈 CK,the maximum spatial distribution variability was CK〉RG〉CG. The spatial variation of Cleistogenes songorica was mainly caused by structure factors under continuing grazing condition while in rotational grazing condition,it was the obvious factor of random factors,and the structure ratio was 0. 679. The spatial distribution characteristics of Cleistogenes songorica showed a large patchy distribution,continuing grazing caused Cleistogenes songorica a mosaic distribution of lower and higher density plaque,which had a mesh spatial distribution state.