|
| Characteristics of Hydrogeochemistry and Isotope Geochemistry in Xinjiang River Basin |
|
Received:August 01, 2022
Revised:August 05, 2022
Accepted:August 15, 2022
Published Online:December 19, 2022
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2023.01.019 |
| KeyWord:Xinjiang river basin; hydrochemical composition; hydrochemical characteristics; cause analysis; hydrogen and oxygen isotope |
| Author | Institution |
| FANG Zheng |
东华理工大学水资源与环境工程学院 |
| GAO Bai |
东华理工大学核资源与环境国家重点试验室 |
| LIN Cong-ye |
东华理工大学水资源与环境工程学院 |
| SHI Tian-cheng |
东华理工大学水资源与环境工程学院 |
| LIU Sheng-feng |
东华理工大学水资源与环境工程学院 |
| DING Yan |
东华理工大学水资源与环境工程学院 |
|
| Hits: 1569 |
| Download times: 1624 |
| Abstract: |
| In order to explore the hydrochemical characteristics of Xinjiang river basin, reveal the main ion sources and their influencing factors in the basin, total of 82 surface water and groundwater samples were collected. Mathematical statistical methods were used to analyze the characteristics of water chemical components. Piper three-line diagram and Shukarev classification method were used to divide water chemical types. Gibbs diagram method and rock weathering end meta-model were used to analyze ion sources and influencing factors. Hydrogen and oxygen isotope characteristics were used to identify water supply sources and influencing factors. The results show that the predominant cations in surface water and groundwater in Xinjiang river basin are Ca2+, the predominant anions are HCO3- and SO42-, and the pH value is neutral (7.32) and weakly alkaline (8.88). The hydrochemical types are mainly HCO3?SO4-Ca and HCO3-Ca types, and the hydrochemical types of groundwater are more abundant. The analysis results of hydrochemical origin show that the main controlling factor of surface water and groundwater is rock weathering, and a small number of sampling points are affected by human activities. The rock weathering End-members diagram further determines that carbonate weathering is the dominant type of rock weathering in the study area. The hydrogen and oxygen isotope characteristics show that both surface water and groundwater in Xinjiang river basin are recharged by atmospheric precipitation, surface water is most affected by evaporation, and hydrogen and oxygen isotopes are most affected by evaporation. The isotope fractionation effect is obvious. The surface water line and the groundwater line are obviously offset, indicating that the hydraulic connection between the two is poor. The oceanic air mass is the main precipitation-controlling air mass in Xinjiang river basin. |
| Close |