Distinct patterns of chemical weathering in the drainage basins of the Huanghe and Xijiang River, China: Evidence from chemical and Sr-isotopic compositions

	Distinct patterns of chemical weathering in the drainage basins of the Huanghe and Xijiang River, China: Evidence from chemical and Sr-isotopic compositions
	Bing Wang; Xin-Qing Lee; Hong-Lin Yuan; Hui Zhou; Hong-Guang Cheng; Jian-Zhong Cheng; Zhi-Hong Zhou; Ying Xing; Bin Fang; Li-Ke Zhang; Fang Yang
Corresponding Author	Xin-Qing Lee
	2012
Source Publication	Journal of Asian Earth Sciences
Volume	59 Issue:SI Pages:219-230
Abstract	Aquatic geochemistry on watershed background helps elucidate the influence of natural processes and anthropogenic activities to the environment. The Sr-87/Sr-86 ratios and dissolved loads were measured in 35 water samples from the Huanghe and Xijiang River drainage basins. The dissolved loads and Sr-87/Sr-86 ratios differed considerably between the two drainage basins. The Sr-87/Sr-86 ratios of the Xijiang River are between 0.70856 and 0.70936, with an average of 0.70894, reflecting weathering of carbonate minerals as the dominant source and anthropogenic pollution as the secondary one, especially in the upper reach tributaries, while the Sr isotopic ratios in the Huanghe River range from 0.70986 to 0.71139 averaging 0.71118 that results primarily from evaporite dissolution. Precipitation contributes to 2.8% and 5.7% to the chemistry of the Xijiang and Huanghe River, respectively. Evaporite dissolution and silicate weathering account for 79.4% and 11.3%, respectively, in the Huanghe River while carbonate dissolution and silicate weathering account for 75.4% and 14.6%, respectively, in the Xijiang River. The chemical weathering rate is 107.6 t/km(2)/yr in the Xijiang River drainage basin, and 34.2 t/km(2)/yr in the Huanghe River drainage basin. The CO2 consumption budget is 305.2 x 10(9) mol/yr in the Xijiang River drainage basin, and 147.9 x 10(9) mol/yr in the Huanghe River drainage basin.
Subject Area	环境地球化学
Indexed By	SCI
Language	英语
Document Type	期刊论文
Identifier	http://ir.gyig.ac.cn/handle/352002/4920
Collection	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
Corresponding Author	Xin-Qing Lee
Recommended Citation GB/T 7714	Bing Wang,Xin-Qing Lee,Hong-Lin Yuan,et al. Distinct patterns of chemical weathering in the drainage basins of the Huanghe and Xijiang River, China: Evidence from chemical and Sr-isotopic compositions[J]. Journal of Asian Earth Sciences,2012,59(SI):219-230.
APA	Bing Wang.,Xin-Qing Lee.,Hong-Lin Yuan.,Hui Zhou.,Hong-Guang Cheng.,...&Fang Yang.(2012).Distinct patterns of chemical weathering in the drainage basins of the Huanghe and Xijiang River, China: Evidence from chemical and Sr-isotopic compositions.Journal of Asian Earth Sciences,59(SI),219-230.
MLA	Bing Wang,et al."Distinct patterns of chemical weathering in the drainage basins of the Huanghe and Xijiang River, China: Evidence from chemical and Sr-isotopic compositions".Journal of Asian Earth Sciences 59.SI(2012):219-230.

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