Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming
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 Platea...
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Online Access: | http://ir.ieecas.cn/handle/361006/7733 https://doi.org/10.1002/ecs2.2233 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/7733 2023-06-11T04:15:51+02:00 Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming Yang, Yan Hopping, Kelly A. Wang, Genxu Chen, Ji Peng, Ahui Klein, Julia A. 2018-05-01 http://ir.ieecas.cn/handle/361006/7733 https://doi.org/10.1002/ecs2.2233 英语 eng WILEY ECOSPHERE http://ir.ieecas.cn/handle/361006/7733 doi:10.1002/ecs2.2233 aboveground net primary production (ANPP) alpine grasslands climate change desertification diversity mountains permafrost plant height production synthesis Tibetan Plateau water availability NET PRIMARY PRODUCTION SOIL ORGANIC-CARBON CLIMATE-CHANGE PRIMARY PRODUCTIVITY GLOBAL ASSESSMENT ALPINE MEADOW SPECIES COMPOSITION RESPONSES PRECIPITATION TUNDRA Environmental Sciences & Ecology Ecology 期刊论文 2018 ftchinacascieeca https://doi.org/10.1002/ecs2.2233 2023-05-08T13:23:03Z 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. Report permafrost Tundra Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Ecosphere 9 5 e02233 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
aboveground net primary production (ANPP) alpine grasslands climate change desertification diversity mountains permafrost plant height production synthesis Tibetan Plateau water availability NET PRIMARY PRODUCTION SOIL ORGANIC-CARBON CLIMATE-CHANGE PRIMARY PRODUCTIVITY GLOBAL ASSESSMENT ALPINE MEADOW SPECIES COMPOSITION RESPONSES PRECIPITATION TUNDRA Environmental Sciences & Ecology Ecology |
spellingShingle |
aboveground net primary production (ANPP) alpine grasslands climate change desertification diversity mountains permafrost plant height production synthesis Tibetan Plateau water availability NET PRIMARY PRODUCTION SOIL ORGANIC-CARBON CLIMATE-CHANGE PRIMARY PRODUCTIVITY GLOBAL ASSESSMENT ALPINE MEADOW SPECIES COMPOSITION RESPONSES PRECIPITATION TUNDRA Environmental Sciences & Ecology Ecology Yang, Yan Hopping, Kelly A. Wang, Genxu Chen, Ji Peng, Ahui Klein, Julia A. Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming |
topic_facet |
aboveground net primary production (ANPP) alpine grasslands climate change desertification diversity mountains permafrost plant height production synthesis Tibetan Plateau water availability NET PRIMARY PRODUCTION SOIL ORGANIC-CARBON CLIMATE-CHANGE PRIMARY PRODUCTIVITY GLOBAL ASSESSMENT ALPINE MEADOW SPECIES COMPOSITION RESPONSES PRECIPITATION TUNDRA Environmental Sciences & Ecology Ecology |
description |
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. |
format |
Report |
author |
Yang, Yan Hopping, Kelly A. Wang, Genxu Chen, Ji Peng, Ahui Klein, Julia A. |
author_facet |
Yang, Yan Hopping, Kelly A. Wang, Genxu Chen, Ji Peng, Ahui Klein, Julia A. |
author_sort |
Yang, Yan |
title |
Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming |
title_short |
Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming |
title_full |
Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming |
title_fullStr |
Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming |
title_full_unstemmed |
Permafrost and drought regulate vulnerability of Tibetan Plateau grasslands to warming |
title_sort |
permafrost and drought regulate vulnerability of tibetan plateau grasslands to warming |
publisher |
WILEY |
publishDate |
2018 |
url |
http://ir.ieecas.cn/handle/361006/7733 https://doi.org/10.1002/ecs2.2233 |
genre |
permafrost Tundra |
genre_facet |
permafrost Tundra |
op_relation |
ECOSPHERE http://ir.ieecas.cn/handle/361006/7733 doi:10.1002/ecs2.2233 |
op_doi |
https://doi.org/10.1002/ecs2.2233 |
container_title |
Ecosphere |
container_volume |
9 |
container_issue |
5 |
container_start_page |
e02233 |
_version_ |
1768373015377084416 |