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| DOI：10.13522/j.cnki.ggps.2025017 |
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| A review of paleoclimate reconstruction based on soil physical and chemical properties |
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JIA Yifan, GE Yanyan, LI Sheng, JIE Feilong
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1. Xinjiang University, Urumqi 830052, China; 2. Xinjiang Key Laboratory for Geodynamic Processes and
Metallogenic Prognosis of the Central Asian Orogenic Belt, Xinjiang University, Urumqi 830052, China;
3. Henan Fourth Geological and Mineral Resources Survey Institute Co., Ltd, Zhengzhou 450000, China
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| Abstract: |
| 【Objective】Groundwater is a vital resource for agricultural irrigation in arid regions, but excessive exploitation has led to over-mineralization, making water unsuitable for direct use. In the central part of Yingjisha County, the presence of an anticline has exacerbated over-extraction of confined water, resulting in elevated groundwater salinity in the north and limiting its agricultural applicability. This study evaluates the potential utilization of groundwater with varying salinity levels and proposes strategies for its sustainable use. 【Method】A water flow and solute transport model in the unsaturated zone was developed to analyze the spatial distribution of groundwater. Available water was classified according to quality, and a multi-objective water allocation model was established based on mass balance, constrained by irrigation demand and water quality. The optimization was solved using an improved particle swarm optimization algorithm. 【Result】Optimal allocation reduced annual irrigation water from 368.58 million m3 to 322.99 million m3 and enabled the use of 11.64 million m3 of groundwater with salinity exceeding 3.0 g/L. This approach also decreased the overall groundwater exploitation rate from 123% to 74%.【Conclusion】Optimal water allocation significantly enhances the utilization of brackish groundwater, mitigates groundwater table decline, and prevents irrigation water shortages. The findings provide a theoretical basis for sustainable management and efficient use of brackish groundwater for agricultural production in arid regions. |
| Key words: water quality; brackish underground; optimized configuration; anticline structure; irrigation water quality constraint |
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