Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China
Lakes in the permafrost zone have been proposed to serve as key outlets for methane and carbon dioxide emissions. However, there has been no geological record of the hydrological and biogeochemical responses of lakes throughout the thawing of surrounding permafrost. We use multiple biomarker and iso...
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Language: | English |
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GEOLOGICAL SOC AMER, INC
2021
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Online Access: | http://ir.ieecas.cn/handle/361006/16999 https://doi.org/10.1130/G48891.1 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/16999 2023-06-11T04:15:51+02:00 Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China Yao, Yuan Huang, Yongsong Zhao, Jiaju Wang, Li Ran, Youhua Liu, Weiguo Cheng, Hai 2021-09-01 http://ir.ieecas.cn/handle/361006/16999 https://doi.org/10.1130/G48891.1 英语 eng GEOLOGICAL SOC AMER, INC GEOLOGY http://ir.ieecas.cn/handle/361006/16999 doi:10.1130/G48891.1 THERMOKARST LAKE METHANE SEDIMENTS WATER DISTRIBUTIONS EMISSIONS Geology 期刊论文 2021 ftchinacascieeca https://doi.org/10.1130/G48891.1 2023-05-08T13:25:26Z Lakes in the permafrost zone have been proposed to serve as key outlets for methane and carbon dioxide emissions. However, there has been no geological record of the hydrological and biogeochemical responses of lakes throughout the thawing of surrounding permafrost. We use multiple biomarker and isotopic proxies to reconstruct hydrological and biogeochemical changes in Lake Wudalianchi in northeastern China during regional thawing of the permafrost. We show permafrost thawing, as indicated by lignin degradation, initiated rapid lake water freshening as a result of the opening of groundwater conduits, and negative organic delta 13C excursion due to increased inorganic and organic carbon fluxes. These hydrological changes were followed, with an similar to 5-7 yr delay, by abrupt and persistent increases in microbial lake methanotrophy and methanogenesis, indicating enhanced anaerobic organic decomposition and methane emissions from lakes as permafrost thaws. Our data provide a detailed assessment of the processes involved during permafrost thaw, and highlight the importance of lakes in ventilating greenhouse gases to the atmosphere. Report permafrost Thermokarst Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Rapid Lake ENVELOPE(177.619,177.619,52.064,52.064) Geology 49 9 1117 1121 |
institution |
Open Polar |
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Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
THERMOKARST LAKE METHANE SEDIMENTS WATER DISTRIBUTIONS EMISSIONS Geology |
spellingShingle |
THERMOKARST LAKE METHANE SEDIMENTS WATER DISTRIBUTIONS EMISSIONS Geology Yao, Yuan Huang, Yongsong Zhao, Jiaju Wang, Li Ran, Youhua Liu, Weiguo Cheng, Hai Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China |
topic_facet |
THERMOKARST LAKE METHANE SEDIMENTS WATER DISTRIBUTIONS EMISSIONS Geology |
description |
Lakes in the permafrost zone have been proposed to serve as key outlets for methane and carbon dioxide emissions. However, there has been no geological record of the hydrological and biogeochemical responses of lakes throughout the thawing of surrounding permafrost. We use multiple biomarker and isotopic proxies to reconstruct hydrological and biogeochemical changes in Lake Wudalianchi in northeastern China during regional thawing of the permafrost. We show permafrost thawing, as indicated by lignin degradation, initiated rapid lake water freshening as a result of the opening of groundwater conduits, and negative organic delta 13C excursion due to increased inorganic and organic carbon fluxes. These hydrological changes were followed, with an similar to 5-7 yr delay, by abrupt and persistent increases in microbial lake methanotrophy and methanogenesis, indicating enhanced anaerobic organic decomposition and methane emissions from lakes as permafrost thaws. Our data provide a detailed assessment of the processes involved during permafrost thaw, and highlight the importance of lakes in ventilating greenhouse gases to the atmosphere. |
format |
Report |
author |
Yao, Yuan Huang, Yongsong Zhao, Jiaju Wang, Li Ran, Youhua Liu, Weiguo Cheng, Hai |
author_facet |
Yao, Yuan Huang, Yongsong Zhao, Jiaju Wang, Li Ran, Youhua Liu, Weiguo Cheng, Hai |
author_sort |
Yao, Yuan |
title |
Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China |
title_short |
Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China |
title_full |
Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China |
title_fullStr |
Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China |
title_full_unstemmed |
Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China |
title_sort |
permafrost thaw induced abrupt changes in hydrology and carbon cycling in lake wudalianchi, northeastern china |
publisher |
GEOLOGICAL SOC AMER, INC |
publishDate |
2021 |
url |
http://ir.ieecas.cn/handle/361006/16999 https://doi.org/10.1130/G48891.1 |
long_lat |
ENVELOPE(177.619,177.619,52.064,52.064) |
geographic |
Rapid Lake |
geographic_facet |
Rapid Lake |
genre |
permafrost Thermokarst |
genre_facet |
permafrost Thermokarst |
op_relation |
GEOLOGY http://ir.ieecas.cn/handle/361006/16999 doi:10.1130/G48891.1 |
op_doi |
https://doi.org/10.1130/G48891.1 |
container_title |
Geology |
container_volume |
49 |
container_issue |
9 |
container_start_page |
1117 |
op_container_end_page |
1121 |
_version_ |
1768373014070558720 |