Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw
Permafrost thawing may release nitrous oxide (N2O) due to large N storage in cold environments. However, N2O emissions from permafrost regions have received little attention to date, particularly with respect to the underlying microbial mechanisms. We examined the magnitude of N2O fluxes following u...
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AMER CHEMICAL SOC
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Online Access: | http://ir.ibcas.ac.cn/handle/2S10CLM1/20417 https://doi.org/10.1021/acs.est.8b02271 |
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ftchiacadscibcas:oai:ir.ibcas.ac.cn:2S10CLM1/20417 2023-05-15T17:56:16+02:00 Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw Yang, Guibiao Peng, Yunfeng Marushchak, Maija E. Chen, Yongliang Wang, Guanqin Li, Fei Zhang, Dianye Wang, Jun Yu, Jianchun Liu, Li Qin, Shuqi Kou, Dan Yang, Yuanhe 2018 http://ir.ibcas.ac.cn/handle/2S10CLM1/20417 https://doi.org/10.1021/acs.est.8b02271 英语 eng AMER CHEMICAL SOC ENVIRONMENTAL SCIENCE & TECHNOLOGY http://ir.ibcas.ac.cn/handle/2S10CLM1/20417 doi:10.1021/acs.est.8b02271 cn.org.cspace.api.content.CopyrightPolicy@1a459cfb Engineering Environmental Environmental Sciences CLIMATE-CHANGE N2O EMISSIONS CARBON STOCKS NITRIC-OXIDE SOIL FEEDBACKS RELEASE METHANE COLLAPSE EXCHANGE Article 期刊论文 2018 ftchiacadscibcas https://doi.org/10.1021/acs.est.8b02271 2022-06-12T18:14:01Z Permafrost thawing may release nitrous oxide (N2O) due to large N storage in cold environments. However, N2O emissions from permafrost regions have received little attention to date, particularly with respect to the underlying microbial mechanisms. We examined the magnitude of N2O fluxes following upland thermokarst formation along a 20-year thaw sequence within a thermo-erosion gully in a Tibetan swamp meadow. We also determined the importance of environmental factors and the related microbial functional gene abundance. Our results showed that permafrost thawing led to a mass release of N2O in recently collapsed sites (3 years ago), particularly in exposed soil patches, which presented post-thaw emission rates equivalent to those from agricultural and tropical soils. In addition to abiotic factors, soil microorganisms exerted significant effects on the variability in the N2O emissions along the thaw sequence and between vegetated and exposed patches. Overall, our results demonstrate that upland thermokarst formation can lead to enhanced N2O emissions, and that the global warming potential (GWP) of N2O at the thermokarst sites can reach 60% of the GWP of CH4 (vs similar to 6% in control sites), highlighting the potentially strong noncarbon (C) feedback to climate warming in permafrost regions. Article in Journal/Newspaper permafrost Thermokarst Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences) Environmental Science & Technology 52 16 9162 9169 |
institution |
Open Polar |
collection |
Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences) |
op_collection_id |
ftchiacadscibcas |
language |
English |
topic |
Engineering Environmental Environmental Sciences CLIMATE-CHANGE N2O EMISSIONS CARBON STOCKS NITRIC-OXIDE SOIL FEEDBACKS RELEASE METHANE COLLAPSE EXCHANGE |
spellingShingle |
Engineering Environmental Environmental Sciences CLIMATE-CHANGE N2O EMISSIONS CARBON STOCKS NITRIC-OXIDE SOIL FEEDBACKS RELEASE METHANE COLLAPSE EXCHANGE Yang, Guibiao Peng, Yunfeng Marushchak, Maija E. Chen, Yongliang Wang, Guanqin Li, Fei Zhang, Dianye Wang, Jun Yu, Jianchun Liu, Li Qin, Shuqi Kou, Dan Yang, Yuanhe Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw |
topic_facet |
Engineering Environmental Environmental Sciences CLIMATE-CHANGE N2O EMISSIONS CARBON STOCKS NITRIC-OXIDE SOIL FEEDBACKS RELEASE METHANE COLLAPSE EXCHANGE |
description |
Permafrost thawing may release nitrous oxide (N2O) due to large N storage in cold environments. However, N2O emissions from permafrost regions have received little attention to date, particularly with respect to the underlying microbial mechanisms. We examined the magnitude of N2O fluxes following upland thermokarst formation along a 20-year thaw sequence within a thermo-erosion gully in a Tibetan swamp meadow. We also determined the importance of environmental factors and the related microbial functional gene abundance. Our results showed that permafrost thawing led to a mass release of N2O in recently collapsed sites (3 years ago), particularly in exposed soil patches, which presented post-thaw emission rates equivalent to those from agricultural and tropical soils. In addition to abiotic factors, soil microorganisms exerted significant effects on the variability in the N2O emissions along the thaw sequence and between vegetated and exposed patches. Overall, our results demonstrate that upland thermokarst formation can lead to enhanced N2O emissions, and that the global warming potential (GWP) of N2O at the thermokarst sites can reach 60% of the GWP of CH4 (vs similar to 6% in control sites), highlighting the potentially strong noncarbon (C) feedback to climate warming in permafrost regions. |
format |
Article in Journal/Newspaper |
author |
Yang, Guibiao Peng, Yunfeng Marushchak, Maija E. Chen, Yongliang Wang, Guanqin Li, Fei Zhang, Dianye Wang, Jun Yu, Jianchun Liu, Li Qin, Shuqi Kou, Dan Yang, Yuanhe |
author_facet |
Yang, Guibiao Peng, Yunfeng Marushchak, Maija E. Chen, Yongliang Wang, Guanqin Li, Fei Zhang, Dianye Wang, Jun Yu, Jianchun Liu, Li Qin, Shuqi Kou, Dan Yang, Yuanhe |
author_sort |
Yang, Guibiao |
title |
Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw |
title_short |
Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw |
title_full |
Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw |
title_fullStr |
Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw |
title_full_unstemmed |
Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw |
title_sort |
magnitude and pathways of increased nitrous oxide emissions from uplands following permafrost thaw |
publisher |
AMER CHEMICAL SOC |
publishDate |
2018 |
url |
http://ir.ibcas.ac.cn/handle/2S10CLM1/20417 https://doi.org/10.1021/acs.est.8b02271 |
genre |
permafrost Thermokarst |
genre_facet |
permafrost Thermokarst |
op_relation |
ENVIRONMENTAL SCIENCE & TECHNOLOGY http://ir.ibcas.ac.cn/handle/2S10CLM1/20417 doi:10.1021/acs.est.8b02271 |
op_rights |
cn.org.cspace.api.content.CopyrightPolicy@1a459cfb |
op_doi |
https://doi.org/10.1021/acs.est.8b02271 |
container_title |
Environmental Science & Technology |
container_volume |
52 |
container_issue |
16 |
container_start_page |
9162 |
op_container_end_page |
9169 |
_version_ |
1766164386813050880 |