| Cite this article: | 李茉,刘武元,付强,等.基于供水不确定性的灌区农业水资源多层多目标协同调控[J].灌溉排水学报,0,():-. |
| 李茉,liuwuyuan,fuqiang,et al.基于供水不确定性的灌区农业水资源多层多目标协同调控[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Multi-layer and Multi-objective Coordinated Regulation of Agricultural Water Resources in Irrigation Districts Based on the Uncertainty of Water Supply |
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李茉1,2, liuwuyuan1,2, fuqiang1,2, lihaiyan1,2, zhaoli1,2
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1.Northeast Agricultural University, School of Water Conservancy &2.Civil Engineering
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| Abstract: |
| 【Objective】Rational allocation of agricultural water resources in irrigation areas is of great significance to improve the efficiency of agricultural water resources utilization. The multi-level, multi-objective, multi-variable and interconnectedness in the allocation of agricultural water resources in irrigation areas increases the complexity of water resources allocation. The randomness of water supply leads to the uncertainty of water resources allocation.【Method】Taking the Jinxi Irrigation District in Heilongjiang Province as the research area, this paper establishes a multi-objective cooperative regulation two-layer large system optimization model of agricultural water resources based on quantitative characterization of the interval uncertainty of water supply fluctuations. The aim of the model is to achieve the synergistic enhancement of farmers' interests and economic and social benefits by optimizing the surface and groundwater volumes of different crops in the backbone channels of the irrigation district at different water distribution times. The two-layer model has coordinated mutual feedbacks between water supply and water use, and is solved by the integration of optimal-disadvantage method, fuzzy mathematical planning, and large system decomposition-coordination method.【Result】The economic benefits of the irrigation district fluctuate between [20.52, 25.03] × 108 yuan, and the water allocation fluctuates between [475.34, 512.75] × 106 m3. Compared with the actual situation, the groundwater utilization is reduced by 7%, which alleviates the current situation of groundwater over-exploitation in the irrigation area. The economic benefit per unit of water is increased by 14.5%, which effectively improves the water utilization rate. The Gini coefficient of water allocation in the irrigation district is [0.36, 0.55], indicating relatively fair water allocation among different crops in different sub-districts.【Conclusion】The model proposed in this paper contributes to the coordinated regulation of multiple water sources among different interests and objectives in irrigation districts, promotes sustainable development of irrigation districts, and enhances the ability of water allocation in irrigation districts to cope with changing environments. |
| Key words: Agricultural water resources; Multi-layer and multi-objective optimization model; Synergistic regulatory; Uncertainty; Jinxi Irrigation District |
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