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Geochemistry of the dissolved loads of the Liao River basin in northeast China under anthropogenic pressure: Chemical weathering and controlling factors
Hu Ding;  Cong-Qiang Liu;  Zhi-Qi Zhao;  Si-Liang Li;  Yun-Chao Lang;  Xiao-Dong Li;  Jian Hu;  Bao-Jian Liu
2017
发表期刊Journal of Asian Earth Sciences
卷号138页码:657-671
摘要

This study focuses on the chemical and Sr isotopic compositions of the dissolved load of the rivers in the Liao River basin, which is one of the principal river systems in northeast China. Water samples were collected from both the tributaries and the main channel of the Liao River, Daling River and Hun-Tai River. Chemical and isotopic analyses indicated that four major reservoirs (carbonates (+gypsum), silicates, evaporites and anthropogenic inputs) contribute to the total dissolved solutes. Other than carbonate (+gypsum) weathering, anthropogenic inputs provide the majority of the solutes in the river water. The estimated chemical weathering rates (as TDS) of silicate, carbonate (+gypsum) and evaporites are 0.28, 3.12 and 0.75 t/km2/yr for the main stream of the Liao River and 7.01, 25.0 and 2.80 t/km2/yr for the Daliao River, respectively. The associated CO2 consumption rates by silicate weathering and carbonate (+gypsum) weathering are 10.1 and 9.94 × 103 mol/km2/yr in the main stream of the Liao River and 69.0 and 80.4 × 103 mol/km2/yr in the Hun-Tai River, respectively. The Daling River basin has the highest silicate weathering rate (TDSsil, 3.84 t/km2/yr), and the Hun-Tai River has the highest carbonate weathering rate (TDScarb, 25.0 t/km2/yr). The Raoyang River, with an anthropogenic cation input fraction of up to 49%, has the lowest chemical weathering rates, which indicates that human impact is not a negligible parameter when studying the chemical weathering of these rivers. Both short-term and long-term study of riverine dissolved loads are needed to a better understanding of the chemical weathering and controlling factors.

关键词River Water Chemistry Chemical Weathering Co2 Consumption Liao River
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/42920512-1/8341
专题环境地球化学国家重点实验室
作者单位State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
推荐引用方式
GB/T 7714
Hu Ding;Cong-Qiang Liu;Zhi-Qi Zhao;Si-Liang Li;Yun-Chao Lang;Xiao-Dong Li;Jian Hu;Bao-Jian Liu. Geochemistry of the dissolved loads of the Liao River basin in northeast China under anthropogenic pressure: Chemical weathering and controlling factors[J]. Journal of Asian Earth Sciences,2017,138:657-671.
APA Hu Ding;Cong-Qiang Liu;Zhi-Qi Zhao;Si-Liang Li;Yun-Chao Lang;Xiao-Dong Li;Jian Hu;Bao-Jian Liu.(2017).Geochemistry of the dissolved loads of the Liao River basin in northeast China under anthropogenic pressure: Chemical weathering and controlling factors.Journal of Asian Earth Sciences,138,657-671.
MLA Hu Ding;Cong-Qiang Liu;Zhi-Qi Zhao;Si-Liang Li;Yun-Chao Lang;Xiao-Dong Li;Jian Hu;Bao-Jian Liu."Geochemistry of the dissolved loads of the Liao River basin in northeast China under anthropogenic pressure: Chemical weathering and controlling factors".Journal of Asian Earth Sciences 138(2017):657-671.
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