| 引用本文: | 付传星,吴雨箫,陈皓锐,等.基于分布式水文模型的内蒙古达拉特旗黄河南岸灌区排水来源模拟[J].灌溉排水学报,2026,45(4):108-118. |
| FU Chuanxing,WU Yuxiao,CHEN Haorui,et al.基于分布式水文模型的内蒙古达拉特旗黄河南岸灌区排水来源模拟[J].灌溉排水学报,2026,45(4):108-118. |
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| 摘要: |
| 【目的】基于分布式水文模型开展灌区排水来源模拟，明晰灌区排水组成以及灌溉、降水对排水量的贡献。【方法】基于灌区实地调研资料和实测数据，构建了灌区分布式水文模型（Irrigation Districts Model，IDM），用于模拟灌区排水过程，利用2023—2024年连续观测数据完成模型率定与验证；在此基础上，设计多情景模拟方案，解析灌区排水量对不同灌溉、降水情景的响应规律，进而通过建立灌区总排水量与灌溉、降水的多元线性回归方程，对灌区排水进行定量溯源分析。【结果】①经过率定和验证的IDM模型模拟结果与实测值能够较好地吻合，该模型能够有效地模拟灌区的水文过程。②灌区排水量及排水来源受到灌溉和降水的共同影响，灌溉量和降水量对灌区地表排水量的影响更加强烈；不同水文年型下的排水成分均以地下排水为主，枯水年地下排水量占比最高，为78%，其次为平水年，地下排水量占比为70%，丰水年地下排水量占比最低，为65%。③灌区现状年约有47.01%的总排水量源于灌溉，52.99%的总排水量源于降水。【结论】IDM模型能够准确模拟灌区排水过程，定量解析灌溉和降水对排水的贡献。 |
| 关键词: 模型；灌区；排水；灌溉 |
| DOI：10.13522/j.cnki.ggps.2025316 |
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| A distributed irrigation district model for differentiating drainage water sources in irrigation districts |
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FU Chuanxing, WU Yuxiao, CHEN Haorui, ZHANG Baozhong, MI Boyu, MIAO Ping, ZHENG Hexiang
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1. State Key Laboratory of Water Cycle and Water Security, China Institute of Water Resources and Hydropower Research,
Beijing 100038, China; 2. National Center for Efficient Irrigation Engineering and Technology Research-Beijing,
Beijing 100048, China; 3. Hubei Water Resources and Hydropower Research Institute, Wuhan 430064, China;
4. Ordos River and Lake Protection Center, Ordos 017200, China;
5. Institute of Pastoral Water Conservancy, Ministry of Water Resources, Hohhot 010013, China
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| Abstract: |
| 【Objective】Accurate identification of drainage sources in irrigation districts is essential for optimizing water resource management and improving drainage efficiency. However, the complex interactions between irrigation and precipitation make it difficult to quantify their respective contributions. This paper presents a method for identifying drainage sources in irrigation districts and quantifying the respective contributions of irrigation and precipitation to drainage water.【Method】The method is based on a distributed hydrological model, termed the Irrigation District Model (IDM), to simulate the drainage process using field survey data and measured observations. The model was first calibrated and validated against field data collected from 2023 to 2024. The validated model was then used to analyze changes in drainage water and its composition under different irrigation and precipitation scenarios. A multiple linear regression model relating total drainage volume to irrigation and precipitation was established to quantitatively differentiate drainage sources.【Result】①The IDM-simulated results showed good agreement with observed data, demonstrating its effectiveness in simulating hydrological processes in irrigation districts. ②Both drainage volume and its composition were influenced by irrigation and precipitation, with surface drainage showing greater sensitivity to these inputs. Across different hydrological years, subsurface drainage was dominant. Its contribution was highest in dry years (78%) and least in wet years (65%), with normal years (70%) in between. ③Overall, approximately 47.01% of the total drainage originated from irrigation, with the remaining 52.99% attributed to precipitation.【Conclusion】The proposed IDM can accurately simulate drainage processes in irrigation districts and quantify the respective contributions of irrigation and precipitation to drainage. The model can be used to support improving water resource management and drainage regulation in irrigation districts. |
| Key words: model; irrigation district; drainage; irrigation |
