干旱区生态环境知识资源中心(Arid): Changes in plant species composition and diversity of alpine Kobresia (Kobresia pygmaea) steppe meadow at different stages of desertification in the North Tibetan plateau

Arid

	Changes in plant species composition and diversity of alpine Kobresia (Kobresia pygmaea) steppe meadow at different stages of desertification in the North Tibetan plateau
	Wei, XingHu; Yang, Ping; Li, Sen; Dong, YuXiang; Zhang, ChunLai
通讯作者	Wei, XH
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2009
卷号	1 期号:1 页码:71-79
英文摘要	The impacts of desertification on the vegetation composition, structure, and species diversity of alpine Kobresia steppe meadow were evaluated in an area of severe desertification in Anduo County, Tibet Autonomous Region, northern China. We investigated and analyzed the floristic features of communities at four different stages of desertification (slight desertification [SLD], moderate desertification [MD], severe desertification [SD], and very severe desertification [VSD]). The composition and structure of the alpine Kobresia steppe meadow at the SLD site differed significantly from that at the MD, SD, and VSD sites. Species that were more drought resistant and inedible by livestock were the dominant species at the SD site. No plants were found in the shifting dunes of the VSD site. Species diversity also decreased with increasing desertification. The SLD site had the largest mean number of species and individuals and the largest richness index; the MD grassland had the largest Shannon-Wiener index and evenness index, but the smallest Simpson's index. The vegetation cover declined from 91.8% to 34.8% as desertification increased from SLD to SD, and reached 0% in VSD areas with shifting dunes.
英文关键词	desertification alpine Kobresia steppe meadow diversity Tibet China
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000422247300008
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329309
作者单位	[Wei, XingHu; Li, Sen] Foshan Univ, Dept Resources & Environm, 18 Jiangwanyi Rd, Foshan 528000, Guangdong, Peoples R China; [Yang, Ping] Chinese Acad Sci, Resources & Environm Bur, Lanzhou 730000, Gansu, Peoples R China; [Dong, YuXiang] Zhongshan Univ, Dept Geog, Guangzhou 510275, Guangdong, Peoples R China; [Zhang, ChunLai] Beijing Normal Univ, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Wei, XingHu,Yang, Ping,Li, Sen,et al. Changes in plant species composition and diversity of alpine Kobresia (Kobresia pygmaea) steppe meadow at different stages of desertification in the North Tibetan plateau[J]. 北京师范大学,2009,1(1):71-79.
APA	Wei, XingHu,Yang, Ping,Li, Sen,Dong, YuXiang,&Zhang, ChunLai.(2009).Changes in plant species composition and diversity of alpine Kobresia (Kobresia pygmaea) steppe meadow at different stages of desertification in the North Tibetan plateau.SCIENCES IN COLD AND ARID REGIONS,1(1),71-79.
MLA	Wei, XingHu,et al."Changes in plant species composition and diversity of alpine Kobresia (Kobresia pygmaea) steppe meadow at different stages of desertification in the North Tibetan plateau".SCIENCES IN COLD AND ARID REGIONS 1.1(2009):71-79.