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| Hydro-chemical characteristics and ion source analysis of surface water in the Xiaohe irrigation area |
| Received:March 13, 2023 |
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| KeyWord:Xiaohe irrigation area;surface water;hydro-chemical characteristics;factorial analysis;source apportionment |
| Author Name | Affiliation | E-mail | | LIU Ting | College of Biological Science and Technology, Taiyuan Normal University, Jinzhong 030619, China | | | MENG Zhilong | College of Biological Science and Technology, Taiyuan Normal University, Jinzhong 030619, China | mzhl0828@163.com | | TANG Xiuli | College of Biological Science and Technology, Taiyuan Normal University, Jinzhong 030619, China | | | WANG Jie | College of Biological Science and Technology, Taiyuan Normal University, Jinzhong 030619, China | | | GAO Yufeng | Institute of Soil and Water Conservation, Shanxi Agricultural University, Taiyuan 030013, China | |
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| Abstract: |
| To study the chemical characteristics and control factors of surface water in the Xiaohe irrigation area, this study sampled and analyzed the surface water from October 2021 to August 2022, and combined correlation analysis, mathematical statistics, ion ratio, and other methods to analyze the hydro-chemical types and characteristics of ion sources in the study area. The results showed that HCO3-Na· Mg·Ca was the main hydro-chemical type, and the dominant ions were Mg2+ and HCO3-, accounting for 35.41% and 68.49% of cations and anions, respectively. The surface water was significantly affected by rock weathering, and the spatio-temporal variation of ion content was significant. Total dissolved solids content reached its highest value in February and June. Ca2+, Mg2+, and K+ were derived from silicate weathering, HCO3- was derived from the carbonatite weathering, and the sources of Cl-, SO42-, and NO3- were mainly affected by human activities. Thus, this study can provide a theoretical reference for water resource management and ecological restoration in agriculturally irrigated areas. |
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