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Decadal shifts in Qingzang Plateau lake carbon dynamics (1970-2020): From predominant carbon sources to emerging sinks

文献类型：期刊论文

作者Shen, Di5,6; Li, Yu6; Wang, Yafeng5; Huo, Shouliang4; Liu, Yong3; Jia, Junjie1,2; Wang, Shuoyue1,2; Sun, Kun2; Gao, Yang1,2
刊名ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
出版日期2024-09-01
卷号21页码:11
ISSN号2666-4984
关键词Carbon source Carbon sink Carbon exchange flux Qingzang Plateau Global climate change
DOI10.1016/j.ese.2024.100389
通讯作者Gao, Yang(gaoyang@igsnrr.ac.cn)
英文摘要The evasion of carbon dioxide (CO2) from lakes significantly influences the global carbon equilibrium. Amidst global climatic transformations, the role of Qingzang Plateau (QZP) lakes as carbon (C) sources or sinks remains a subject of debate. Furthermore, accurately quantifying their contribution to the global carbon budget presents a formidable challenge. Here, spanning half a century (1970-2020), we utilize a synthesis of literature and empirical field data to assess the CO2 exchange flux of QZP lakes. We find markedly higher CO2 exchange flux in the southeast lakes than that in the northern and western regions from 1970 to 2000. During this time, both freshwater and saltwater lakes served primarily as carbon sources. The annual CO2 exchange flux was estimated at 2.04 +/- 0.37 Tg (Tg) C yr-1, mainly influenced by temperature fluctuations. The CO2 exchange flux patterns underwent a geographical inversion between 2000 and 2020, with increased levels in the west and decreased levels in the east. Notably, CO2 emissions from freshwater lakes diminished, and certain saltwater lakes in the QTP transitioned from carbon sources to sinks. From 2000 to 2020, the annual CO2 exchange flux from QZP lakes is estimated at 1.34 +/- 0.50 Tg C yr-1, with solar radiation playing a more pronounced role in carbon emissions. Cumulatively, over the past five decades, QZP lakes have generally functioned as carbon sources. Nevertheless, the total annual CO2 emissions have declined since the year 2000, indicating a potential shift trend from being a carbon source to a sink, mirroring broader patterns of global climate change. These findings not only augment our understanding of the carbon cycle in plateau aquatic systems but also provide crucial data for refining China's carbon budget. (c) 2024 The Authors. Published by Elsevier B.V. on behalf of Chinese Society for Environmental Sciences, Harbin Institute of Technology, Chinese Research Academy of Environmental Sciences. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
WOS关键词DIOXIDE EMISSIONS ; GREENHOUSE GASES ; TIBETAN PLATEAU ; SURFACE-WATER ; CO2 EVASION ; RIVER ; RESERVOIRS ; BOREAL ; PHYTOPLANKTON ; VARIABILITY
资助项目National Nature Science Foundation of China[31988102] ; National Nature Science Foundation of China[42225103] ; National Nature Science Foundation of China[42141015] ; CAS Project for Young Scientists in Basic Research[YSBR-037]
WOS研究方向Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:001164776600001
资助机构National Nature Science Foundation of China ; CAS Project for Young Scientists in Basic Research
源URL[http://ir.igsnrr.ac.cn/handle/311030/202874]  
专题中国科学院地理科学与资源研究所
通讯作者Gao, Yang
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Peking Univ, Coll Environm Sci & Engn, Beijing 1008714, Peoples R China
4.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
5.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Environm, Beijing 100101, Peoples R China
6.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Shen, Di,Li, Yu,Wang, Yafeng,et al. Decadal shifts in Qingzang Plateau lake carbon dynamics (1970-2020): From predominant carbon sources to emerging sinks[J]. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY,2024,21:11.
APA Shen, Di.,Li, Yu.,Wang, Yafeng.,Huo, Shouliang.,Liu, Yong.,...&Gao, Yang.(2024).Decadal shifts in Qingzang Plateau lake carbon dynamics (1970-2020): From predominant carbon sources to emerging sinks.ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY,21,11.
MLA Shen, Di,et al."Decadal shifts in Qingzang Plateau lake carbon dynamics (1970-2020): From predominant carbon sources to emerging sinks".ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 21(2024):11.

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来源：地理科学与资源研究所

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