Scale-dependent patterns and mechanisms of grazing-induced biodiversity loss: evidence from a field manipulation experiment in semiarid steppe

doi:10.1007/s10980-014-0146-4

	Scale-dependent patterns and mechanisms of grazing-induced biodiversity loss: evidence from a field manipulation experiment in semiarid steppe
	Li, Wenhuai 1; Zhan, Shuxia 1; Lan, Zhichun 1; Wu, X. Ben ; Bai, Yongfei
	2015
发表期刊	LANDSCAPE ECOLOGY
ISSN	0921-2973
卷号	30 期号:9 页码:1751-1765
摘要	Although many studies have demonstrated that grazing may increase or decrease plant diversity of grasslands at small scales, few studies have examined the patterns and mechanisms of grazing effects on biodiversity across multiple scales. Our study tested the scale dependence of grazing effects on plant diversity based a 7-year grazing manipulation experiment with seven levels of grazing intensity (0-9 sheep ha(-1)) in a typical steppe of the Inner Mongolia grassland. Species area relationships (SARs) were used to analyze the scale dependence of species loss. SAR decomposition approaches were followed to examine the contribution of four potential mechanisms to changes in the slope of SARs, including species aggregation, overall species richness, total number of individuals, and species abundance distribution. The proportional species loss increased with sampling area (4-1024 m(2)), which was evidenced by decreasing intercepts and slopes of SARs with grazing. Reduction in the slope of SARs was mainly caused by changes in overall species richness and species abundance distribution, with the relative minor effect of changes in number of individuals. The negative effect of grazing on overall species richness was mainly attributed to the loss of grazing-sensitive rare species from species pool. Compared with flat systems, plant diversity in slope systems was more sensitive to grazing at low intensities. However, the responses of plant diversity to grazing tended to converge between the flat and slope systems at high levels of grazing intensity. Our study has important implications for adaptive ecosystem management and biodiversity conservation in arid and semiarid grasslands.
关键词	Spatial scale Scaling effect Species richness Species-area relationship (SAR) SAR decomposition Rare species Species abundance distribution
学科领域	Ecology ; Geography, Physical ; Geosciences, Multidisciplinary
DOI	10.1007/s10980-014-0146-4
收录类别	SCI
语种	英语
WOS关键词	SPECIES-AREA RELATIONSHIP ; INNER-MONGOLIA ; SPATIAL HETEROGENEITY ; PLANT-COMMUNITIES ; STOCKING RATE ; GRASSLAND ; DIVERSITY ; ECOSYSTEM ; RICHNESS ; PRODUCTIVITY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000361903500014
出版者	SPRINGER
文献子类	Article
出版地	DORDRECHT
EISSN	1572-9761
资助机构	Chinese Academy of Sciences [KSCX2-EW-Z-5, XDA05050400] ; National Key Technology RD Program [2012BAD16B0304] ; Natural Science Foundation of China [31030013, 31320103916]
作者邮箱	yfbai@ibcas.ac.cn
引用统计	被引频次：25[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25660
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Xiangshan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Texas A&M Univ, Dept Ecosyst Sci & Management, College Stn, TX 77843 USA
推荐引用方式 GB/T 7714	Li, Wenhuai,Zhan, Shuxia,Lan, Zhichun,et al. Scale-dependent patterns and mechanisms of grazing-induced biodiversity loss: evidence from a field manipulation experiment in semiarid steppe[J]. LANDSCAPE ECOLOGY,2015,30(9):1751-1765.
APA	Li, Wenhuai,Zhan, Shuxia,Lan, Zhichun,Wu, X. Ben,&Bai, Yongfei.(2015).Scale-dependent patterns and mechanisms of grazing-induced biodiversity loss: evidence from a field manipulation experiment in semiarid steppe.LANDSCAPE ECOLOGY,30(9),1751-1765.
MLA	Li, Wenhuai,et al."Scale-dependent patterns and mechanisms of grazing-induced biodiversity loss: evidence from a field manipulation experiment in semiarid steppe".LANDSCAPE ECOLOGY 30.9(2015):1751-1765.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Li-2015-Scale-depend（2334KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文