Hydrochemistry of the middle and upper reaches of the Yarlung Tsangpo River system: weathering processes and CO2 consumption
文献类型：SCI/SSCI论文
| 作者 | Jiang L. G.; Yao, Z. J.; Wang, R.; Liu, Z. F.; Wang, L.; Wu, S. S. |
| 发表日期 | 2015 |
| 关键词 | Yarlung Tsangpo Hydrochemistry Major ions Weathering processes CO2 consumption major ion chemistry qinghai-tibet plateau chemical erosion yangtze-river min-jiang basin himalaya geochemistry brahmaputra carbon |
| 英文摘要 | The study focuses on the chemical compositions of the river waters in the middle and upper reaches of the Yarlung Tsangpo river system. Samples were collected in two periods along the river system to analyze the spatio-temporal variation characteristics and to determine the weathering processes and CO2 consumption. The results show that the chemical facies of river waters are dominated by Ca-HCO3 type and the TDS values cover a wide range of 98.2-619.8 mg/l with an average value of 268.6 mg/l, which is higher than that of the global river waters. There are three major reservoirs (carbonates, evaporites, and silicates) contributing to the major ions, and the pre-dominances of the reservoirs of different rivers show spatial heterogeneity. The chemical weathering rates of silicates and carbonates are 3.43 and 4.49 t/km(2)/year, respectively. Overall, the middle and upper reaches of Yarlung Tsangpo are responsible for 0.3 and 0.16 % of global atmospheric CO2 consumption by silicates (1.7 x 10(5) mol/km(2)/year) and carbonates (1.27 x 10(5) mol/km(2)/year), respectively. In addition, the chemical weathering fluxes of the catchments consume atmospheric CO2 of 0.5456 Tg C/year, accounting for 0.14 % of the total organic carbon flux to the oceans by rivers globally. |
| 出处 | Environmental Earth Sciences |
| 卷 | 74 |
| 期 | 3 |
| 页 | 2369-2379 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1866-6280 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38669]  |
| 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.,Wang, R.,et al. Hydrochemistry of the middle and upper reaches of the Yarlung Tsangpo River system: weathering processes and CO2 consumption. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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