Provenances and Controlling Factors of Solutes in Surface Runoff in the Tarim River Basin, Northwest China

IOP Conference Series

article

Jian Wang¹  Junli Xu¹  Yongshan Li¹  Wei Yan¹ 

[1] North Jiangsu Research Institute of Agricultural and Rural Modernization, Yancheng Teachers University;School of Geographic Sciences, Xinyang Normal University

DOI  :  10.1088/1755-1315/821/1/012016

学科分类：材料科学（综合）

来源: Institute Of Physics Publishing

【 摘 要 】

Research addressing the spatial differences and evolution of river hydrochemistry can clarify the interaction between surface water-soluble substances and the environment, as well as reveal correlations between surface water quality and human activities. Here, by sampling surface runoff and taking regional geology as the background, we analyze the provenances and control factors of soluble substances in the Tarim River Basin. We found that: More than 80% of the soluble ions in surface water originated from rock weathering in the mountains. The Gibbs free energy between the ions showed that when the runoff flowed out of the mountain, the Ca 2+ and HCO 3 - were almost saturated. The major ion concentration rose synchronously with the runoff migration. These findings indicate that the solute of surface water mainly originated from mountainous areas. Soluble substances had difficulty entering the river channel by erosion of the scarce surface runoff.

【 授权许可】

CC BY