摘要
通过对榆林风沙草滩区的主要物种进行考察,根据植被、立地条件及土壤水分等因素,选取5个典型样地,应用物种丰富度指数(R1)、Shannon—Weiner多样性指数(H)、Simpson多样性指数(D)和Pielou均匀度指数(E1)综合分析了主要物种的丰富度、多样性和均匀度,并对其重要值和土壤水分与物种多样性的关系进行了研究。结果表明,榆林风沙草滩区主要物种的多样性排列顺序为:紫穗槐群落>柠条群落>踏郎群落>沙柳群落>沙蒿群落;均匀度排列顺序为:沙柳群落>紫穗槐群落>柠条群落>踏郎群落>沙蒿群落;土壤含水量排列顺序为:紫穗槐群落>沙蒿群落>沙柳群落>柠条群落>踏郎群落。
Through investigating the main species of different communities in the wind-sandy grass shoal area of Yulin Region, 5 representative areas were selected according to vegetation, site factor, and soil water content. Species richness, species diversity, and the evenness of community were comprehensively calculated by using richness index （R1）, Shannon--Weiner index （H）, Simpson index （D）, and evenness index （E1）. Meanwhile, the relations of the important value of the main species and soil water content to species diversity were studied. The communities in the wind sandy grass shoal area of Yulin Region, in terms of the species diversity, rank in the descendent order of Amorpha fraticosa community, Caragana intermedia community, Hedysarum scoparium community, Salix cheilophila community, and Artemisia arenaria community. However, they, in terms of the evenness of community, rank in the descendent order of Salix cheilophila community, Amorpha fraticosa community, Caragana intermedia community, Hedysarum scoparium community, and Artemisia arenaria community. They, in terms of soil water content, rank in the descendent order of Amorpha f raticosa community, Artemisia arenaria community, Caragana intermedia community, and Hedysarum scoparium community.
出处
《水土保持通报》
CSCD
北大核心
2008年第4期80-85,共6页
Bulletin of Soil and Water Conservation
基金
陕西省交通厅项目(05HX01)
陕西省教育厅项目(07JK443)
榆林学院高学历人才科研项目(06GK011)
榆林学院校内项目(06YK027)
关键词
榆林风沙草滩区
物种多样性
多样性指数
土壤含水量
Yulin wind-sand grass shoal area
species diversity
species diversity index
soil water content
