Abstract:

 Nowadays water resource is relatively lacking in China，which becomes serious gradually Ineffective allocation of water resources in river basins also aggravates the problems of water resources And much uncertain information makes efficient decision more difficult for water resources allocation The water resource allocation method of group decisionmaking based on intervalvalued intuitionistic fuzzy set was used to analyze the particularity of water recourse system as a complex system and the advantage of intuitionistic fuzzy theory application in group decisionmaking The interval fuzzy numbers was used to express the reasonableness of the expert judgment information making The reasonableness of the basin water resources allocation program was improvedDecisions from the perspective of basin water resources sustainable use evaluation by multiple group of experts in the field of water resources were made The factors such as the social，economic，resource and environmental of the river basin were judged Experts opinion based on IIWAA operator was integrated Relative proximity between the index of river basin and the ideal point was used as evaluation criteria of Water Resources Allocation Plan Finally，Ganfu Plain Irrigation Area  was used to validate the development approach and to demonstrate its feasibility and practicality