| 引用本文: | 蔡奕,徐佳,朱勍,等.濮阳市浅层地下水位时空演变特征及驱动机制[J].灌溉排水学报,0,():-. |
| Cai Yi,Xu Jia,Zhu Qing,et al.濮阳市浅层地下水位时空演变特征及驱动机制[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】为了保障农业用水安全，促进地下水可持续利用，【方法】本文采用GIS技术和滑动窗口相关分析法研究了濮阳市浅层地下水位时空演变规律，分析了降水量、黄河水位及农业灌溉量对地下水位的影响，在此基础上探讨了保护地下水和保障灌区生产安全的供水思路与对策。【结果】2006—2018年间，北部地区（属海河流域）地下水位年际变化总体呈波动性特征，南部地区（属黄河流域）总体呈下降趋势。北部地下水位年内高水位出现2月份，南部出现在4月份和10月份，但年内低水位均出现在6月份。全市浅层地下水位从南部向北部递减，黄河滩区地下水位从上游向下游递减。另外，北部地下水位与降水量具有较好的相关性，响应滞后约为6个月，而南部地下水则与黄河水位具有较好的相关性，响应滞后约1个月。针对濮阳市地下水位持续下降和用水需求不断增长的状况，提出了“构建坑塘（湿地）-沟渠-河流水系连通网络体系，提升引黄和雨洪调蓄能力，同时加强高效节水灌溉和中水回用”的农业灌溉供水思路与对策。【结论】研究区浅层地下水位在时间和空间上的变化具有明显的流域差异性，北部的地下水位变化主要由降水和农业灌溉驱动，而南部主要由黄河水位驱动。 |
| 关键词: 沿黄城市; 浅层地下水; 时空变化; 驱动机制; 农田灌溉 |
| DOI： |
| 分类号:TV93;S27 |
| 基金项目:中央级公益性科研院所基本中央级公益性科研院所基本科研业务费专项(HKY-JBYW-2019-19，HKY-JBYW-2020-33), 濮阳市四水同治规划体系编制项目（WZ0190020200086） |
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| Characteristics and Driving Mechanism of Tempo-spatial Variation of Shallow Groundwater Table in Puyang |
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Cai Yi1, Xu Jia1, Zhu Qing2, Rao Yuangen3, Cao Yongtao4
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1.Department of Hydraulic Engineering,School of Civil Engineering, Tongji University;2.School of Continuing Education, Tongji University;3.Puyang Hydrology and Water Resources Survey Bureau, Henan Province;4.Yellow River Institute of Hydraulic Research
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| Abstract: |
| 【Background】Puyang straddles across the Yellow river basin and the Haihe river basin. Its special geographical location has created a unique pattern of agriculture irrigation, that is depending upon the Yellow river water in the south and groundwater in the north. The long-term exploitation has formed a groundwater funnel area, which seriously threatens the food production in the north and restricts the coordinated development inside the city. 【Objective】In order to ensure the safety of agricultural water resources and promote the sustainable utilization of groundwater,【Method】GIS technology and sliding window correlation analysis were employed to investigate tempo-spatial variation of shallow groundwater table in Puyang, and the effects of precipitation, water level of the Yellow river and agricultural irrigation on groundwater table were analyzed in the paper. On the basis, the water supple ideas and countermeasures to protect groundwater and ensure production safety in irrigation regions were discussed.【Result】During the period from 2006 to 2018, the inter-annual variation of groundwater table is of volatility in the north (a part of the Haihe river basin), while that generally experiences a decrease in the south (a part of the Yellow river basin). The highest groundwater table in the north appears in February, whereas that in the south does in April and October. The lowest groundwater table in both the north and the south appears in June. The shallow groundwater table decreases from the south to the north, and the groundwater table in the beach area of the Yellow river declines from the upstream to the downstream in Puyang. Furthermore, the groundwater table in the north has a good correlation with the precipitation and the response lag is about six months, while that in the south has a good correlation with the Yellow river water level and the response lag approximates to one month. In view of the continuous decline in the groundwater table and the growing demand for water in Puyang, it is proposed to build a water network connecting ponds (or wetlands), ditches and rivers for improving the regulation and storage capacity of the Yellow river water diverted and rainwater, and meanwhile to strengthen the efficient water-saving irrigation and reclaimed water reuse.【Conclusion】There are marked cross-basin differences in tempo-spatial variation of shallow groundwater table in the study area. The groundwater table in the north is mainly affected by precipitation and irrigation water consumption, while that in the south is governed by the water level of the Yellow river. |
| Key words: cities along the Yellow River; shallow groundwater; tempo-spatial variation; driving mechanism; agricultural irrigation |
