Effect of snow-cover duration on plant species diversity of alpine meadows on the eastern Qinghai-Tibetan Plateau

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2008 > Vol5 No.4

	Effect of snow-cover duration on plant species diversity of alpine meadows on the eastern Qinghai-Tibetan Plateau
	Chen Wennian ; Wu Yan ; Wu Ning ; Luo Peng
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2008-12
卷号	5 期号:4 页码:327–339
关键词	Disturbance Freeze-thaw alteration Plant species diversity Snow depth Eastern Qinghai-Tibetan Plateau
ISSN号	1672-6316
通讯作者	Wu, N
英文摘要	Although snow cover plays an important role in structuring plant diversity in the alpine zone, there are few studies on the relationship between snow cover and species diversity of alpine meadows on the eastern Qinghai-Tibetan Plateau. To assess the effect of snow cover on plant species diversity of alpine meadows, we used ten parallel transects of 60 m x 1 m for this study and described the changes in species diversity and composition associated with snow depth. With the division of snow depth into six classes, the highest species richness (S) and species diversity (H') occurred with an intermediate snow depth, i.e., class III and class IV, showing a unimodal curve with the increase in snow depth. The relationship between snow depth and plant diversity (both richness and Shannon index) could be depicted by quadratic equations. There was no evident relationship between diversity (both S and H') and soil water content, which implied that other more important factors influenced species diversity. The patterns of diversity found in our study were largely attributed to freeze-thaw alteration, length of growing season and disturbances of livestock grazing. Furthermore, snow depth affected species composition, as evaluated by the Sorensen's index of similarity. In addition, almost all species limited to one snow depth class were found only in class III and class IV, indicating that intermediate snow depth was suitable for the survival and growth of many alpine species.
语种	英语
公开日期	2013-08-14
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/6063]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2008_Vol5 No.4
推荐引用方式 GB/T 7714	Chen Wennian,Wu Yan,Wu Ning,et al. Effect of snow-cover duration on plant species diversity of alpine meadows on the eastern Qinghai-Tibetan Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2008,5(4):327–339.
APA	Chen Wennian,Wu Yan,Wu Ning,&Luo Peng.(2008).Effect of snow-cover duration on plant species diversity of alpine meadows on the eastern Qinghai-Tibetan Plateau.JOURNAL OF MOUNTAIN SCIENCE,5(4),327–339.
MLA	Chen Wennian,et al."Effect of snow-cover duration on plant species diversity of alpine meadows on the eastern Qinghai-Tibetan Plateau".JOURNAL OF MOUNTAIN SCIENCE 5.4(2008):327–339.