面向生态的梯级水库多目标协调决策机制研究OA

In view of the decision-making characteristics of multi-objective coordination and multi-stakeholders negotiation in the ecological operation of cascade reservoirs,this study takes the Xiluodu and Xiangjiaba cascade res-ervoirs in the lower reaches of the Jinsha River as a case study.The appropriate ecological ecological flow in the main stream section of the downstream protected area was quantified.The decision-making mechanism under the principles of prioritizing ecological requirements while considering comprehensive benefits of water utilization was analyzed to construct a multi-objective coordinated decision-making model for ecological and power generation purposes.A com-parative analysis was conducted for the leader-follower hierarchical equilibrium solutions,with the current reservoir operation strategies as the practical benchmark and the multi-objective non-inferior solutions as the theoretical bench-mark.The results show that the leader-follower hierarchical decision-making model can reflect the negotiation charac-teristics and ecological priority.The assurance rate of the appropriate e-flow in the main stream section of the pro-tected area reaches 77.95％,and the average annual power generation of the cascade reservoirs is 92.365 billion kWh.Compared with the current operation strategy,the assurance rate of the appropriate ecological flow increases by 25.95％and power generation increases by 1.571 billion kWh.Based on the negotiation decision-making framework,there remains an average potential for a 5.22％improvement in comprehensive benefits of water utilization through fur-ther cooperation and coordination.This potential for improvement increases with increased or decreased inflow in water abundance or drought conditions.This research offers a decision-making framework for multi-objective trade-offs and multi-stakeholders coordination in the ecological operation of cascade reservoirs.