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, Yan1,2; Hopping, Kelly A.3; Wang, Genxu1; Chen, Ji4,5,6; Peng, Ahui1; Klein, Julia A.2
2018-05-01
Source PublicationECOSPHERE
Volume9Issue:5Pages:1-13
SubtypeArticle
AbstractThe 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.
KeywordAboveground Net Primary Production (Anpp) Alpine Grasslands Climate Change Desertification Diversity Mountains Permafrost Plant Height Production Synthesis Tibetan Plateau Water Availability
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1002/ecs2.2233
WOS KeywordNET PRIMARY PRODUCTION ; SOIL ORGANIC-CARBON ; CLIMATE-CHANGE ; PRIMARY PRODUCTIVITY ; GLOBAL ASSESSMENT ; ALPINE MEADOW ; SPECIES COMPOSITION ; RESPONSES ; PRECIPITATION ; TUNDRA
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
WOS IDWOS:000435640100026
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5098
Collection黄土与第四纪地质国家重点实验室(2010~)
Affiliation1.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
Recommended Citation
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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