Hydrochemistry and its controlling factors of rivers in the source region of the Yangtze River on the Tibetan Plateau
文献类型：SCI/SSCI论文
| 作者 | Jiang L. G.; Yao, Z. J.; Liu, Z. F.; Wang, R.; Wu, S. S. |
| 发表日期 | 2015 |
| 关键词 | Source region of the Yangtze River Hydrochemistry Major ions Water quality Controlling factor major ion chemistry co2 consumption weathering processes tuotuohe region water-quality geochemistry basin system amazon china |
| 英文摘要 | This study focuses on the chemical composition, and the factors controlling it, of the high mountain-rivers in the source region of the Yangtze River on the Tibetan Plateau. By comprehensive and systematic analysis, the chemical signatures, spatial variations of water quality, as well as the factors controlling them are studied. The value of the average total dissolved solids (TDS) is 778 mg/l, ranging from 117 to 5496 mg/l. In order of decreasing concentration, the main cations are Na+, Ca2+, mg(2+), and K+, while the main anions are Cl-, HCO3-, SO42-, and NO3- center dot Na+ and Cl- are the dominant ions, accounting for 74.2% and 63.7% of the total cations and anions, respectively, followed by Ca2+ and HCO3-, which account for 14.3% and 25%, respectively. The Piper diagram shows the main water type to be a Cl- center dot HCO3--Na+ center dot Ca2+ type. From the Gibbs boomerang model, we conclude that the chemistry of the river water is controlled by lithogenic weathering processes. The Na-normalized ratio end-member diagram indicates that the weathering of silicates and carbonates is relatively significant, on the whole. There exists pronounced regional heterogeneity in the water chemistry and the factors affecting it. The northern rivers, including Chumaer He, Beilu He, and Ranchiqu, are mainly affected by evaporation and crystallization processes, while the southern rivers (Tuotuo He, Gaerqu, and Buqu) show effects from the weathering of carbonates and silicates. (C) 2015 Elsevier B.V. All rights reserved. |
| 出处 | Journal of Geochemical Exploration |
| 卷 | 155 |
| 页 | 76-83 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0375-6742 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38668]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Jiang L. G.,Yao, Z. J.,Liu, Z. F.,et al. Hydrochemistry and its controlling factors of rivers in the source region of the Yangtze River on the Tibetan Plateau. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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