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Chemical weathering in the upper and middle reaches of Yarlung Tsangpo River

文献类型：期刊论文

作者Cheng, Yu1,2; Wang, Rui2; Liu, Zhaofei2; Yao, Zhijun2
刊名FRONTIERS IN ENVIRONMENTAL SCIENCE
出版日期2024-04-19
卷号12页码:1379665
关键词Yarlung Tsangpo River chemical weathering hydrochemistry Tibetan Plateau carbon dioxide absorption
DOI10.3389/fenvs.2024.1379665
产权排序1
文献子类Article
英文摘要This study focused on the chemical composition of the rivers in the middle and upper reaches of the Yarlung Tsangpo River system. Samples were collected in April 2015 to analyze spatiotemporal variation characteristics and determine weathering processes and CO2 consumption using principal component analysis (PCA) and a modified forwardmodel. The TDS on the southern bank of the upper and middle reaches of the Yarlung Tsangpo basin was found to be higher than that on the northern bank because of the difference in stratigraphic structure. The results showthat the chemical facies of the rivers all belonged to Ca-HCO3, and the rate of sulfuric acid-dominated chemical weathering was extremely high in the sub-watershed by TZ(+square)/HCO3-square Four major reservoirs (precipitation, silicates, carbonates, and evaporites) produce ions. The results of the chemical budget show that their contribution rateswere 7.80% vs. 5.09% (PCA vs. modifiedforwardmodel, the samebelow): 21.8% vs. 24.7%, 42.80% vs. 50.22%, and 10.30% vs. 21.59%, respectively. The ionic components from carbonate weathering in the study area were dominant, which is the main reason why the calculated results of the carbonate weathering rate (CWR) were higher than the silicate weathering rate (SWR). The CWR reached its maximum value during the monsoon period, whereas the SWR showed the opposite trend. Moreover, CO2 sequestration by chemical weathering of riversmight be themain carbon sink in Tibet, which contributes to the realization of carbon neutrality in Tibet.
WOS关键词CO2 CONSUMPTION ; TIBETAN PLATEAU ; CHEMISTRY ; RATES ; CYCLE ; HYDROCHEMISTRY ; CONSTRAINTS ; EROSION ; BASIN ; AGE
WOS研究方向Environmental Sciences & Ecology
WOS记录号WOS:001220839700001
源URL[http://ir.igsnrr.ac.cn/handle/311030/205188]  
专题资源利用与环境修复重点实验室_外文论文
通讯作者Wang, Rui
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Resources Use & Environm Remediat, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Cheng, Yu,Wang, Rui,Liu, Zhaofei,et al. Chemical weathering in the upper and middle reaches of Yarlung Tsangpo River[J]. FRONTIERS IN ENVIRONMENTAL SCIENCE,2024,12:1379665.
APA Cheng, Yu,Wang, Rui,Liu, Zhaofei,&Yao, Zhijun.(2024).Chemical weathering in the upper and middle reaches of Yarlung Tsangpo River.FRONTIERS IN ENVIRONMENTAL SCIENCE,12,1379665.
MLA Cheng, Yu,et al."Chemical weathering in the upper and middle reaches of Yarlung Tsangpo River".FRONTIERS IN ENVIRONMENTAL SCIENCE 12(2024):1379665.

入库方式： OAI收割

来源：地理科学与资源研究所

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