| 引用本文: | 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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| 摘要: |
| 【目的】合理分配灌区农业水资源对提高农业水资源利用效率具有重要意义。灌区农业水资源配置中的多层次、多目标、多变量及相互联系增加了水资源配置的复杂性。供水随机性导致了水资源配置的不确定性。【方法】本文以黑龙江省锦西灌区为研究对象，在定量表征供水波动区间不确定性的基础上，建立灌区农业水资源多目标协同调控双层大系统优化模型，通过优化灌区骨干渠道不同作物在不同配水时段的地表和地下水量，来实现农民利益与灌区经济-社会效益的协同提升。双层模型的供用水存在协调互馈关系，采用最优-最劣法、模糊数学规划、大系统分解-协调相耦合的方法求解。【结果】灌区的经济效益在[20.52, 25.03]×108元之间波动，配水量在[475.34, 512.75]×106m3之间波动。与实际情况进行对比，地下水利用量减少7%，缓解了灌区地下水超采的现状，单方水经济效益增加了14.5%，有效地提高了水资源利用率。灌区配水基尼系数为[0.36, 0.55]，表明不同分区不同作物间配水相对公平。【结论】本文提出的方法有助于灌区不同利益主体及不同目标间的多水源协调调控，促进灌区可持续发展，并提升灌区水资源配置应对变化环境的能力。 |
| 关键词: 农业水资源；多层-多目标优化模型；协同调控；不确定性；锦西灌区 |
| DOI： |
| 分类号:S274 |
| 基金项目:国家自然科学基金项目（面上项目）(52079029) |
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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 |
