Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming
文献类型：期刊论文
| 作者 | Yang, Yan1,2 ; Hopping, Kelly A.3; Wang, Genxu1; Chen, Ji4,5,6; Peng, Ahui1; Klein, Julia A.2
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| 刊名 | ECOSPHERE
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 9期号:5页码: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 |
| ISSN号 | 2150-8925 |
| DOI | 10.1002/ecs2.2233 |
| 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000435640100026 |
| 出版者 | WILEY |
| 源URL | [http://ir.imde.ac.cn/handle/131551/23336]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Klein, Julia A. |
| 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):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),13. |
| MLA | Yang, Yan,et al."Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming".ECOSPHERE 9.5(2018):13. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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