Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming

doi:10.1002/ecs2.2233

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（2010~）

	Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming
	Yang, Yan 1,2; Hopping, Kelly A.3; Wang, Genxu 1; Chen, Ji 4,5,6; Peng, Ahui 1; Klein, Julia A.2
	2018-05-01
发表期刊	ECOSPHERE
卷号	9 期号:5 页码:1-13
文章类型	Article
摘要	The Tibetan Plateau has the largest expanse of high-elevation permafrost in the world, and it is experiencing climate warming that may jeopardize the functioning of its alpine ecosystems. Many studies have focused on the effects of climate warming on vegetation production and diversity on the Plateau, but their disparate results have hindered a comprehensive, regional understanding. From a synthesis of twelve warming experiments across the Plateau, we found that warming increased aboveground net primary production (ANPP) and vegetation height at sites with permafrost, but ANPP decreased with warming at non-permafrost sites. Aboveground net primary production responded more negatively to warming under drier conditions, due to both annual drought conditions and warming-induced soil moisture loss. Decreases in species diversity with warming were also larger at sites with permafrost. These results support the emerging understanding that water plays a central role in the functioning of cold environments and suggest that as ecosystems cross a threshold from permafrost to non-permafrost systems, ANPP will decrease across a greater proportion of the Tibetan Plateau. This study also highlights the future convergence of challenges from permafrost degradation and grassland desertification, requiring new collaborations among these currently distinct research and stakeholder groups.
关键词	Aboveground Net Primary Production (Anpp) Alpine Grasslands Climate Change Desertification Diversity Mountains Permafrost Plant Height Production Synthesis Tibetan Plateau Water Availability
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.1002/ecs2.2233
关键词[WOS]	NET PRIMARY PRODUCTION ; SOIL ORGANIC-CARBON ; CLIMATE-CHANGE ; PRIMARY PRODUCTIVITY ; GLOBAL ASSESSMENT ; ALPINE MEADOW ; SPECIES COMPOSITION ; RESPONSES ; PRECIPITATION ; TUNDRA
收录类别	SCI
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000435640100026
引用统计	被引频次：51[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/5098
专题	黄土与第四纪地质国家重点实验室（2010~）
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 2.Colorado State Univ, Dept Ecosyst Sci & Sustainabil, Campus Delivery 1476, Ft Collins, CO 80523 USA 3.Stanford Univ, Dept Earth Syst Sci, 473 Via Ortega, Stanford, CA 94305 USA 4.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China 5.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China 6.Northwestern Polytech Univ, Ctr Ecol & Environm Sci, Xian 710072, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yan,Hopping, Kelly A.,Wang, Genxu,et al. Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming[J]. ECOSPHERE,2018,9(5):1-13.
APA	Yang, Yan,Hopping, Kelly A.,Wang, Genxu,Chen, Ji,Peng, Ahui,&Klein, Julia A..(2018).Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming.ECOSPHERE,9(5),1-13.
MLA	Yang, Yan,et al."Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming".ECOSPHERE 9.5(2018):1-13.

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