Optimizing water allocation in an inter-basin water diversion project with equity-efficiency tradeoff: A bi-level multiobjective programming model under uncertainty. (15th October 2022)

• Record Type: Journal Article
• Authors: Wu, Jingyan; Luo, Jungang; Du, Xiaozhou; Zhang, Han; Qin, Shuang
• Is Part Of: Journal of cleaner production. Volume 371(2022)
• Publication Date: 2022-10-15
• Subjects: Water allocation equity -- Inter-basin water diversion -- Bi-level multiobjective programming -- Interval parameter programming -- Fuzzy credibility-constrained programming; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2022.133606
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Achieving optimal water allocation in an inter-basin water diversion project is a challenge that involves multilevel stakeholders, and the uncertainty and disequilibrium of water allocation further intensify competition among different stakeholders. This study proposes a bi-level multiobjective programming model for water allocation in inter-basin water diversions that considers equilibrium sustainability. The model integrates interval parameter programming, fuzzy credibility-constrained programming, bi-level multiobjective programming, and the Gini coefficient into a general framework. The model not only balances the stakeholders at different levels to ensure water allocation equity but also comprehensively considers the fuzzy uncertainty of parameters and constraints to obtain the interrelationship among water diversion, water allocation satisfaction, and efficiency objectives. The developed model was applied to allocate water for the Hanjiang-to-Weihe Water Diversion Project in Shaanxi Province, China. The results showed that 1) the model derived a feasible tradeoff between upper basin manager and lower regional managers under different water diversion scenarios; 2) water allocations and objectives at each level are sensitive to changes in the credibility of water diversion; 3) the new model improves the equity of water allocation and ensures the efficient allocation to various stakeholders at each level based on a comparison of the proposed model with a model that does not consider equilibrium. The proposed model can help decision makers choose the optimal scheme based on their acceptable risk level to achieve a more efficient and sustainable water allocation for inter-basin water diversions. Highlights: A novel approach for water allocation in an inter-basin water diversion was constructed. Achieved the equity-efficiency tradeoff between stakeholders at different levels. The framework provides insights for water allocation under complex uncertainties. The model is applied to a case study to verify the efficiency and feasibility.