Optimizing water allocation in an inter-basin water diversion project with equity-efficiency tradeoff: A bi-level multiobjective programming model under uncertainty

作     者：Wu, Jingyan Luo, Jungang Du, Xiaozhou Zhang, Han Qin, Shuang 

作者机构：Xian Univ Technol State Key Lab Ecohydraul Northwest Arid Reg Xian 710048 Shaanxi Peoples R China Hanjiang to Weihe River Water Divers Project Const Xian 710100 Shaanxi Peoples R China 

出 版 物：《JOURNAL OF CLEANER PRODUCTION》 (清洁化生产杂志)

年 卷 期：2022年第371卷

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：Natural Science Basic Research Program of Shaanxi [2019JLZ-15] Water Science and Technology Program of Shaanxi [2018slkj-4] Research Fund of the State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi?an University of Technology [2019KJCXTD-5] 

主　　题：Water allocation equity Inter -basin water diversion Bi-level multiobjective programming Interval parameter programming Fuzzy credibility -constrained programming 

摘      要：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.