Abstract: A water conflict coordination method based on stakeholder preference is presented to address the contradiction between supply and demand of water resources and the deterioration of water environment. The conflict between the objectives of stakeholders is analyzed to obtain the non-inferior solution set. On this basis, the concepts of equal preference, non-cooperative preference and cooperative preference of stakeholders are introduced to establish the model of water conflict coordination. The coordination solution is obtained, and finally the impact of stakeholder preferences on different water users is analyzed. The model is applied to the Ganjiang-Fuhe River Plain Irrigation Area, and the results show that the model solution based on the non-inferior solution set improves the environmental utility at the cost of economic utility. The coordination solution obtained by the equal preference model and the non-cooperative preference model is similar to that of the cooperative preference model. This suggests that when it is difficult for stakeholders to cooperate, the solution of the equal preference model and the solution of the non-cooperative preference model based on the non-inferior solution set can replace the solution of the cooperative preference model. Compared with traditional decision-making method with the maximum total utility, the presented three preference models pay more attention to environmental utility. The water shortage in Ganjiang-Fuhe River Plain Irrigation Area is mainly shared by agricultural sector because the water consumption of agricultural sector accounts for about 40%, and the sewage discharge accounts for about 30%. To reduce the total sewage discharge, it is necessary to reduce the water consumption of sectors with large sewage discharge, which also indicates the required water-saving amount. The research provides a practical analysis method for water-saving priority and environmental protection.

Key words: water, conflict coordination method, equality preference, non-cooperative preference, cooperative preference, Ganjiang-Fuhe River Plain Irrigation Area