Chemical weathering processes in the Yalong River draining the eastern Tibetan Plateau, China

	Chemical weathering processes in the Yalong River draining the eastern Tibetan Plateau, China
	Si-Liang Li; Benjamin Chetelat; Fujun Yue; Zhiqi Zhao; Cong-Qiang Liu
	2014
发表期刊	Journal of Asian Earth Sciences
卷号	88 期号:1 页码:74-84
摘要	To better understand chemical weathering and controlling processes in the Yalong River of the eastern Tibetan Plateau, this study presents major ion concentrations and stable isotopes of the dissolved loads. The isotopic compositions (delta C-13-DIC, delta S-34 and delta O-18-SO4) of the dissolved loads are very useful to quantify solute sources and define the carbon budget related with chemical weathering in riverine systems. The isotopic composition of sulphate demonstrates that most of the sulphate is derived from sulphide oxidation, particularly in the upper reach of the Yalong River. The correlations between delta C-13-DIC, water chemistry and isotopes of sulphate, suggest that the carbon dynamics are mainly affected by carbonate weathering by sulphuric acid and equilibration processes. Approximately 13% of the dissolved inorganic carbon in the Yalong River originates from carbonate weathering by strong acid. The CO2 consumption rates are estimated to be 2.8 x 10(5) mol/km(2)/yr and 0.9 x 10(5) mol/km2/yr via carbonate and silicate weathering in the Yalong River, respectively. In this study, the influence of sulphide oxidation and metamorphic CO2 on the carbon budget is estimated for the Yalong River draining the eastern Tibetan Plateau.
关键词	Dual Isotopes Of Sulphate Δ13c-dic Hot Spring Weathering Processes Eastern Himalaya
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5224
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Si-Liang Li,Benjamin Chetelat,Fujun Yue,et al. Chemical weathering processes in the Yalong River draining the eastern Tibetan Plateau, China[J]. Journal of Asian Earth Sciences,2014,88(1):74-84.
APA	Si-Liang Li,Benjamin Chetelat,Fujun Yue,Zhiqi Zhao,&Cong-Qiang Liu.(2014).Chemical weathering processes in the Yalong River draining the eastern Tibetan Plateau, China.Journal of Asian Earth Sciences,88(1),74-84.
MLA	Si-Liang Li,et al."Chemical weathering processes in the Yalong River draining the eastern Tibetan Plateau, China".Journal of Asian Earth Sciences 88.1(2014):74-84.

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