气候变化领域集成服务门户(CCPortal): Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China

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DOI	10.1130/G48891.1
	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
通讯作者	Yao, Y (通讯作者)，Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710054, Peoples R China. ; Yao, Y (通讯作者)，Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China. ; Yao, Y (通讯作者)，Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA.
发表日期	2021
ISSN	0091-7613
EISSN	1943-2682
起始页码	1117
结束页码	1121
卷号	49 期号:9
英文摘要	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.
关键词	THERMOKARST LAKE METHANE SEDIMENTS WATER DISTRIBUTIONS EMISSIONS
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000692563800021
来源期刊	GEOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254955
作者单位	[Yao, Yuan; Huang, Yongsong; Cheng, Hai] Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710054, Peoples R China; [Yao, Yuan; Huang, Yongsong; Zhao, Jiaju; Liu, Weiguo; Cheng, Hai] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China; [Yao, Yuan; Huang, Yongsong] Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA; [Wang, Li] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China; [Ran, Youhua] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Cheng, Hai] Chinese Acad Geol Sci, Inst Karst Geol, Key Lab Karst Dynam, Minist Land & Resources, Guilin 541004, Peoples R China
推荐引用方式 GB/T 7714	Yao, Yuan,Huang, Yongsong,Zhao, Jiaju,et al. Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China[J]. 中国科学院西北生态环境资源研究院,2021,49(9).
APA	Yao, Yuan.,Huang, Yongsong.,Zhao, Jiaju.,Wang, Li.,Ran, Youhua.,...&Cheng, Hai.(2021).Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China.GEOLOGY,49(9).
MLA	Yao, Yuan,et al."Permafrost thaw induced abrupt changes in hydrology and carbon cycling in Lake Wudalianchi, northeastern China".GEOLOGY 49.9(2021).