Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming

doi:10.1002/ecs2.2233

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 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
	Hopping, Kelly A.4; Klein, Julia A.5; Yang, Yan 5,6; Peng, Ahui 6; Chen, Ji 1,2,3; Wang, Genxu 6
刊名	ECOSPHERE
	2018-05-01
卷号	9 期号:5 页码:1-13
关键词	Aboveground Net Primary Production (Anpp) Alpine Grasslands Climate Change Desertification Diversity Mountains Permafrost Plant Height Production Synthesis Tibetan Plateau Water Availability
DOI	10.1002/ecs2.2233
文献子类	Article
英文摘要	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.
WOS关键词	NET PRIMARY PRODUCTION ; SOIL ORGANIC-CARBON ; CLIMATE-CHANGE ; PRIMARY PRODUCTIVITY ; GLOBAL ASSESSMENT ; ALPINE MEADOW ; SPECIES COMPOSITION ; RESPONSES ; PRECIPITATION ; TUNDRA
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000435640100026
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5098]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
作者单位	1.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China 2.Northwestern Polytech Univ, Ctr Ecol & Environm Sci, Xian 710072, Shaanxi, Peoples R China 3.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China 4.Stanford Univ, Dept Earth Syst Sci, 473 Via Ortega, Stanford, CA 94305 USA 5.Colorado State Univ, Dept Ecosyst Sci & Sustainabil, Campus Delivery 1476, Ft Collins, CO 80523 USA 6.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Hopping, Kelly A.,Klein, Julia A.,Yang, Yan,et al. Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming[J]. ECOSPHERE,2018,9(5):1-13.
APA	Hopping, Kelly A.,Klein, Julia A.,Yang, Yan,Peng, Ahui,Chen, Ji,&Wang, Genxu.(2018).Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming.ECOSPHERE,9(5),1-13.
MLA	Hopping, Kelly A.,et al."Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming".ECOSPHERE 9.5(2018):1-13.