Enhanced response of soil respiration to experimental warming upon thermokarst formation
International audience Abstract As global temperatures continue to rise, a key uncertainty of terrestrial carbon (C)–climate feedback is the rate of C loss upon abrupt permafrost thaw. This type of thawing—termed thermokarst—may in turn accelerate or dampen the response of microbial degradation of s...
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Online Access: | https://hal.science/hal-04572958 https://hal.science/hal-04572958/document https://hal.science/hal-04572958/file/s41561-024-01440-2.pdf https://doi.org/10.1038/s41561-024-01440-2 |
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ftinsu:oai:HAL:hal-04572958v1 2024-09-30T14:41:13+00:00 Enhanced response of soil respiration to experimental warming upon thermokarst formation Wang, Guanqin Peng, Yunfeng Chen, Leiyi Abbott, Benjamin, W Ciais, Philippe Kang, Luyao Liu, Yang Li, Qinlu Peñuelas, Josep Qin, Shuqi Smith, Pete Song, Yutong Strauss, Jens Wang, Jun Wei, Bin Yu, Jianchun Zhang, Dianye Yang, Yuanhe Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 2024-04-30 https://hal.science/hal-04572958 https://hal.science/hal-04572958/document https://hal.science/hal-04572958/file/s41561-024-01440-2.pdf https://doi.org/10.1038/s41561-024-01440-2 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41561-024-01440-2 hal-04572958 https://hal.science/hal-04572958 https://hal.science/hal-04572958/document https://hal.science/hal-04572958/file/s41561-024-01440-2.pdf doi:10.1038/s41561-024-01440-2 info:eu-repo/semantics/OpenAccess ISSN: 1752-0894 Nature Geoscience https://hal.science/hal-04572958 Nature Geoscience, 2024, ⟨10.1038/s41561-024-01440-2⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2024 ftinsu https://doi.org/10.1038/s41561-024-01440-2 2024-09-05T01:02:18Z International audience Abstract As global temperatures continue to rise, a key uncertainty of terrestrial carbon (C)–climate feedback is the rate of C loss upon abrupt permafrost thaw. This type of thawing—termed thermokarst—may in turn accelerate or dampen the response of microbial degradation of soil organic matter and carbon dioxide (CO 2 ) release to climate warming. However, such impacts have not yet been explored in experimental studies. Here, by experimentally warming three thermo-erosion gullies in an upland thermokarst site combined with incubating soils from five additional thermokarst-impacted sites on the Tibetan Plateau, we investigate how warming responses of soil CO 2 release would change upon upland thermokarst formation. Our results show that warming-induced increase in soil CO 2 release is ~5.5 times higher in thermokarst features than the adjacent non-thermokarst landforms. This larger warming response is associated with the lower substrate quality and higher abundance of microbial functional genes for recalcitrant C degradation in thermokarst-affected soils. Taken together, our study provides experimental evidence that warming-associated soil CO 2 loss becomes stronger upon abrupt permafrost thaw, which could exacerbate the positive soil C–climate feedback in permafrost-affected regions. Article in Journal/Newspaper permafrost Thermokarst Institut national des sciences de l'Univers: HAL-INSU Nature Geoscience 17 6 532 538 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Wang, Guanqin Peng, Yunfeng Chen, Leiyi Abbott, Benjamin, W Ciais, Philippe Kang, Luyao Liu, Yang Li, Qinlu Peñuelas, Josep Qin, Shuqi Smith, Pete Song, Yutong Strauss, Jens Wang, Jun Wei, Bin Yu, Jianchun Zhang, Dianye Yang, Yuanhe Enhanced response of soil respiration to experimental warming upon thermokarst formation |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Abstract As global temperatures continue to rise, a key uncertainty of terrestrial carbon (C)–climate feedback is the rate of C loss upon abrupt permafrost thaw. This type of thawing—termed thermokarst—may in turn accelerate or dampen the response of microbial degradation of soil organic matter and carbon dioxide (CO 2 ) release to climate warming. However, such impacts have not yet been explored in experimental studies. Here, by experimentally warming three thermo-erosion gullies in an upland thermokarst site combined with incubating soils from five additional thermokarst-impacted sites on the Tibetan Plateau, we investigate how warming responses of soil CO 2 release would change upon upland thermokarst formation. Our results show that warming-induced increase in soil CO 2 release is ~5.5 times higher in thermokarst features than the adjacent non-thermokarst landforms. This larger warming response is associated with the lower substrate quality and higher abundance of microbial functional genes for recalcitrant C degradation in thermokarst-affected soils. Taken together, our study provides experimental evidence that warming-associated soil CO 2 loss becomes stronger upon abrupt permafrost thaw, which could exacerbate the positive soil C–climate feedback in permafrost-affected regions. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
format |
Article in Journal/Newspaper |
author |
Wang, Guanqin Peng, Yunfeng Chen, Leiyi Abbott, Benjamin, W Ciais, Philippe Kang, Luyao Liu, Yang Li, Qinlu Peñuelas, Josep Qin, Shuqi Smith, Pete Song, Yutong Strauss, Jens Wang, Jun Wei, Bin Yu, Jianchun Zhang, Dianye Yang, Yuanhe |
author_facet |
Wang, Guanqin Peng, Yunfeng Chen, Leiyi Abbott, Benjamin, W Ciais, Philippe Kang, Luyao Liu, Yang Li, Qinlu Peñuelas, Josep Qin, Shuqi Smith, Pete Song, Yutong Strauss, Jens Wang, Jun Wei, Bin Yu, Jianchun Zhang, Dianye Yang, Yuanhe |
author_sort |
Wang, Guanqin |
title |
Enhanced response of soil respiration to experimental warming upon thermokarst formation |
title_short |
Enhanced response of soil respiration to experimental warming upon thermokarst formation |
title_full |
Enhanced response of soil respiration to experimental warming upon thermokarst formation |
title_fullStr |
Enhanced response of soil respiration to experimental warming upon thermokarst formation |
title_full_unstemmed |
Enhanced response of soil respiration to experimental warming upon thermokarst formation |
title_sort |
enhanced response of soil respiration to experimental warming upon thermokarst formation |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://hal.science/hal-04572958 https://hal.science/hal-04572958/document https://hal.science/hal-04572958/file/s41561-024-01440-2.pdf https://doi.org/10.1038/s41561-024-01440-2 |
genre |
permafrost Thermokarst |
genre_facet |
permafrost Thermokarst |
op_source |
ISSN: 1752-0894 Nature Geoscience https://hal.science/hal-04572958 Nature Geoscience, 2024, ⟨10.1038/s41561-024-01440-2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41561-024-01440-2 hal-04572958 https://hal.science/hal-04572958 https://hal.science/hal-04572958/document https://hal.science/hal-04572958/file/s41561-024-01440-2.pdf doi:10.1038/s41561-024-01440-2 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41561-024-01440-2 |
container_title |
Nature Geoscience |
container_volume |
17 |
container_issue |
6 |
container_start_page |
532 |
op_container_end_page |
538 |
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1811643639783227392 |