Analysis on the Coupling Coordination of Water-energy-food System in Dujiangyan Irrigation District
Water resources,energy and food are three necessary resources for human society,and they are highly interrelat-ed.Researches on coordinated development of water-energy-food nexus(WEFN)are of great significance for water security,energy security and food security.Dujiangyan Irrigation District,as a main commodity grain base in Sichuan Province,plays an important role in guaranteeing the food supply of Sichuan Province.Thus,Dujiangyan Irrigation District is selected as a study area,a comprehensive evaluation index system of WEFN system is constructed,and TOPSIS method based on entropy weight is used to evaluate the comprehensive development degree of WEFN system.And the coupling coordination degrees of WEFN system from 2009 to 2021 are calculated based on the coupling coordination model,its temporal evolution characteristics is analyzed.Then the gray model GM(1,1)is constructed to forecast the development trend of coupling co-ordination degree of WEFN system from 2022 to 2030.The results show that the comprehensive development degree of WEFN system in Dujiangyan Irrigation District is at the medium development level with an upward trend;the mean value of the coupling degree of WEFN system is 0.961,WEFN system is at a high level of coupling,meanwhile,the mean value of the coupling coordination degree is 0.663,WEFN system is at the medium coordination stage in most of the years;the cou-pling coordination degree of WEFN system in the period from 2022 to 2030 will rise to 0.893,WEFN system will enter the high coordination stage.The results can provide theoretical guidance for sustainable agricultural development in Dujiangyan Irrigation District and method reference for similar regions.
water-energy-food systemcoupling coordination degreegrey prediction modelDujiangyan Irrigation District
国家科技期刊平台
NSTL
万方数据
