Evolutionary analysis of conflicts in initial water right allocation in river basin

Conflicts among regions emerge easily during initial water right allocation in river basin. Firstly, the paper proposed the root cause of these conflicts is because of some regions being allocated with excessive water right, and others with too little water right. Then, the formation mechanism and evolution of the conflicts are analyzed. By building evolutionary game model of two groups, which are “regions with excessive water right” group and “regions with too little water right” group, the replicator dynamics and evolutionary stable strategy of each group are analyzed, stability analysis of the evolutionary game system is also done. The study makes a conclusion that there is a unique ESS of the evolutionary game between the two groups; if each region´s initial water right is adjusted according to ESS, the conflicts would be eliminated and harmonious and orderly environment for using water resource would be set up.