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Hydro-Geochemical and Sr Isotope Characteristics of the Yalong River Basin, Eastern Tibetan Plateau: Implications for Chemical Weathering and Controlling Factors

文献类型：期刊论文

作者Zhang, Xuan1,2,3; Xu, Zhifang1,2,3; Liu, Wenjing1,2,3; Moon, Seulgi4; Zhao, Tong1,2,3; Zhou, Xiaode1,2,3; Zhang, Jiangyi1,2,3; Wu, Yao5; Jiang, Hao1,2,3; Zhou, Li6
刊名GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
出版日期2019-03-01
卷号20期号:3页码:1221-1239
ISSN号1525-2027
关键词Yalong River basin Tibetan plateau chemical weathering strontium isotope climatic factors topographic factors
DOI10.1029/2018GC007769
英文摘要Major ions and Sr isotope compositions of waters in the Yalong River basin in the eastern Tibetan plateau were investigated to explore the sources of dissolved loads and the controls on chemical weathering rates. Measured radiogenic Sr-87/Sr-86 ratios of water samples are most likely derived from the weathering of metamorphic carbonates or the Precambrian silicate rocks. Quantitative analysis of water geochemistry shows that carbonate weathering dominates the chemical characteristics of the river water. The chemical weathering rate of the whole Yalong River basin is calculated to be 7.6ton.km(-2).year(-1) by silicate weathering and 44.7ton.km(-2).year(-1) by carbonate weathering, which consumes 158.5x10(3) and 885.0x10(3)mol.km(-2).year(-1) of atmospheric CO2, respectively. The highest carbonate weathering rate (116.3ton.km(-2).year(-1)) in the Yalong River basins is observed from the basin with the steepest catchment average slope. This highest magnitude of carbonate weathering is comparable to the rates from catchments in the southern Himalayas. Positive relationships are observed between silicate weathering rates and both climatic (precipitation and temperature) and topographic (relief and slope) controls. The combined climatic and tectonic effects increase silicate weathering and counterbalance the dilution effect. However, the relationship between silicate weathering rate and climatic and topographic controls varies with hydrologic conditions. The rate for low-discharge catchments is more closely related to climatic parameters, while the rate for high-discharge catchments is more closely related to local topography.
WOS关键词MAJOR-ION CHEMISTRY ; CO2 CONSUMPTION ; BRAHMAPUTRA RIVER ; HIMALAYAN RIVERS ; CARBONATE DISSOLUTION ; FLUVIAL GEOCHEMISTRY ; SULFIDE OXIDATION ; ELEMENT CHEMISTRY ; CLIMATIC CONTROLS ; ATMOSPHERIC CO2
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB15010405] ; Natural Science Foundation of China[91747202] ; Natural Science Foundation of China[41730857] ; Natural Science Foundation of China[41772380] ; University of Chinese Academy of Sciences (UCAS)
WOS研究方向Geochemistry & Geophysics
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000464647100001
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; University of Chinese Academy of Sciences (UCAS) ; University of Chinese Academy of Sciences (UCAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; University of Chinese Academy of Sciences (UCAS) ; University of Chinese Academy of Sciences (UCAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; University of Chinese Academy of Sciences (UCAS) ; University of Chinese Academy of Sciences (UCAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; University of Chinese Academy of Sciences (UCAS) ; University of Chinese Academy of Sciences (UCAS)
源URL[http://ir.iggcas.ac.cn/handle/132A11/91287]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Xu, Zhifang; Liu, Wenjing
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA
5.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun, Jilin, Peoples R China
6.China Univ Geosci Wuhan, Sch Environm Studies, Wuhan, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xuan,Xu, Zhifang,Liu, Wenjing,et al. Hydro-Geochemical and Sr Isotope Characteristics of the Yalong River Basin, Eastern Tibetan Plateau: Implications for Chemical Weathering and Controlling Factors[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2019,20(3):1221-1239.
APA Zhang, Xuan.,Xu, Zhifang.,Liu, Wenjing.,Moon, Seulgi.,Zhao, Tong.,...&Zhou, Li.(2019).Hydro-Geochemical and Sr Isotope Characteristics of the Yalong River Basin, Eastern Tibetan Plateau: Implications for Chemical Weathering and Controlling Factors.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,20(3),1221-1239.
MLA Zhang, Xuan,et al."Hydro-Geochemical and Sr Isotope Characteristics of the Yalong River Basin, Eastern Tibetan Plateau: Implications for Chemical Weathering and Controlling Factors".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 20.3(2019):1221-1239.

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来源：地质与地球物理研究所

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