宁夏香山地区植物群落α多样性初步分析  

Primary Analysis of a Diversity Index for Plant Community in Xiangshan Mountain Area of Ningxia

作　　者：尚占环[1] 姚爱兴[1] 郭旭生[1] 

机构地区：[1]宁夏大学农学院草业科学研究所,永宁750105

出　　处：《草地学报》2002年第4期244-250,共7页Acta Agrestia Sinica

基　　金：国家自然科学基金资助项目 (3 9960 0 5 2 );教育部骨干教师资助项目

摘　　要：在典型取样调查的基础上 ,采用 Pielon均匀度指数、Simpson多样性指数、Shannon- Wiener指数、Mclntosh指数以及 Simpson优势度指数对宁夏香山地区荒漠草原的植被多样性进行评价 ,利用重要值对多样性指数中的 Pi值进行无偏估计。结果表明 ,除 Shannon- Wiener模型外 ,其他多样性指数均能较好地反映各放牧点的利用情况。对应用的多样性指数进行相关分析结果表明 ,变化度指数受物种数和均匀度的影响。On the basis of typical sampling investigation. The vegetation diversity of desert steppe in Xiangshan mountain area of Ningxia was evaluated by application of Pielon uniformity index, Simpson diversity index, Shan Wiener index, Mclntosh index and Superiority indexs. The P i value of the diversity index was estimated by using the important value(IV). It is showed that most of the diversity index, except the Shannon Wiener model, can reflect the situation of each grazing sites. The correlation analysis of diversity index indicated that variance index is affected by the number and uniformity of plant species. It is suggested that the effective diversity index should be chosen for the diversity research of desert steppe.

关 键 词：宁夏 香山地区 植物群落 Α多样性 荒漠草原 植被 放牧 

分 类 号：S812[农业科学—草业科学]