干旱区生态环境知识资源中心(Arid): 藏北高原高寒草地围栏禁牧和生长季降水对物种丰富度和多样性的影响

Arid

	藏北高原高寒草地围栏禁牧和生长季降水对物种丰富度和多样性的影响
其他题名	Species Richness and Diversity of Alpine Grasslands on the Northern Tibetan Plateau:Effects of Grazing Exclusion and Growing Season Precipitation
	武建双 ; 张宪洲 ; 沈振西 ; 石培礼 ; 余成群 ; 宋明华 ; 李晓佳
来源期刊	资源与生态学报
ISSN	1674-764X
出版年	2012
卷号	3 期号:3 页码:236-242
中文摘要	2009和2010年夏天沿藏北高原高寒草地样带调查了高寒草地生态系统(高寒草甸、高寒草原和荒漠草原)在围栏禁牧和自由放牧管理下的物种丰富度和多样性(Shannon-Wiener指数,Simpson优势度指数和Pielou均匀度指数)。研究结果显示:自2006年起藏北高原围栏禁牧在植被类型和区域尺度上没有显著改变物种丰富度和多样性。物种丰富度和多样性主要受生长季降水驱动,超过87%的变异可由生长季降水来解释。物种丰富度和多样性在自由放牧和围栏禁牧2类样地对生长季降水的响应方式一致。物种丰富度随降水呈指数型增长关系,多样性指数则呈现正线性关系。研究结果预示藏北高原地区生长季降水的变化对于物种丰富度和多样性管理至关重要,在未来高寒草地保护研究中应予以重视。
英文摘要	Species richness and diversity indices (Shannon-Wiener index, Simpson dominance index and Pielou evenness index) in alpine grassland ecosystems (alpine meadow, alpine steppe and desert steppe) under grazing-excluded and freely grazed sites were investigated along the Northern Tibetan Plateau Alpine Grassland Transect during summer 2009 and 2010. We found that species richness and diversity have not been significantly altered by short-term grazing exclusion since 2006 at vegetation and regional scales. Species richness and diversity were mainly driven by growing season precipitation (GSP), which accounted for over 87 % of the total variation observed. Species richness and diversity at grazing- excluded and freely grazed sites appear to respond to growing season precipitation in parallel. Species richness exponentially increased with GSP while diversity indices showed positively linear relationships with GSP. This indicates that GSP on the Northern Tibetan Plateau is crucial in regulating species richness and diversity and should be taken into account in future studies on alpine grassland conservation.
中文关键词	物种多样性 ; 物种丰富度 ; 放牧排除 ; 生长季降水 ; 高寒草地 ; 藏北高原
英文关键词	species diversity species richness grazing exclusion growing season precipitation alpine grasslands Northern Tibetan Plateau
语种	英语
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4665486
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229174
作者单位	1.Lhasa Plateau Ecosystem Research Station, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Ecosystem Network Observation and Modeling(CAS), Beijing 100101, China; 2.Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Ecosystem Network Observation and Modeling, CAS, Beijing 100101, China; 3.College of Geographical Science, Inner Mongolia Normal University, Hohhot, Inner Mongolia 010022, China
推荐引用方式 GB/T 7714	武建双,张宪洲,沈振西,等. 藏北高原高寒草地围栏禁牧和生长季降水对物种丰富度和多样性的影响[J],2012,3(3):236-242.
APA	武建双.,张宪洲.,沈振西.,石培礼.,余成群.,...&李晓佳.(2012).藏北高原高寒草地围栏禁牧和生长季降水对物种丰富度和多样性的影响.资源与生态学报,3(3),236-242.
MLA	武建双,et al."藏北高原高寒草地围栏禁牧和生长季降水对物种丰富度和多样性的影响".资源与生态学报 3.3(2012):236-242.