南方农业学报2012，Vol.43Issue(12)：2035-2039,5.DOI:10.3969/j:issn.2095-1191.2012.12.2035
呼伦贝尔草原不同程度退化下羊草群落特征
Characteristics analysis of Leymus chinensis communities in various degradation degrees on Hulunbeir prarie
摘要
Abstract
[Objective]This study investigated and analyzed the Leymus chinensis communities characteristics of Hu-lunbeier prairies under various degrees of degradation in order to lay out relevant developmental foundations on protecting and promoting the sustainable utilization of Hulunbeier prairie resources. [ Method ] Based on the residential location from farthest to nearest, 3 different degrees of degradation samples, including mild, moderate, and severe, were sequentially provided to investigate and analyze the plot plant community characteristics. [ Result ]From the results, the plant community species' important values in every sample increased. Important values of the Leymus chinensis community increased as the degree of degradation increased, but the important values of relative Stipa baicalensis species decreased as the degree of degradation increased. Compared to those from the mild and moderate areas, Stipa baicalensis community plant species from the severe regions decreased obviously; their quantitative characteristics also declined. As the degree of degradation increased, the ct-diversity index also decreased. [Conclusion]The prairie degradation succession not only changed the community species composition significantly, but also led to changes in the species diversity.关键词
呼伦贝尔草原/退化/羊草群落特征/α多样性指数/重要值Key words
Hulunbeier prairies/ various degrees of degradation/ Aneurolepidium chinensis community characteristics/ a diversity index/ important value分类
农业科技引用本文复制引用
桂花,乌仁其其格..呼伦贝尔草原不同程度退化下羊草群落特征[J].南方农业学报,2012,43(12):2035-2039,5.基金项目
内蒙古教育厅自然科学基金项目(NJ10251) （NJ10251）
