水资源丰沛区农业用水效率空间格局及影响因素OA北大核心CSTPCD

In order to provide reference for solving the problems of agricultural water shortage and water environment pollution in Zhejiang,an agricultural water use efficiency index was constructed,and an ultra-efficiency SBM model was used to measure the agricultural water use efficiency in Zhejiang Province from 2010 to 2020.The kernel density estimation method was used to analyze the spatio-temporal evolution law of agricultural water use efficiency.Finally,the main influencing factors of agricultural water use efficiency were analyzed using a geographical detector.The agricultural water use efficiency in Zhejiang Province increased from 1.153 in 2010 to 1.661 in 2020,with an average annual growth of 3.71%and an average of 1.535 in recent years,which is always in a state of effective utilization.Over the years,the overall trend of fluctuation rose,stability was strong,and the influence of pure technical efficiency was great.Although the agricultural water use efficiency in northern Zhejiang is higher than that in southern Zhejiang,the regional differences are decreasing.Economic development level,the government's emphasis on agricultural water use,agricultural planting structure,and water resource abundance were the main factors influencing the spatial differentiation of agricultural water use efficiency in Zhejiang Province.At the same time,the spatial variation of agricultural water use efficiency is not the result of a single factor,but of the nonlinear enhancement under joint action of many factors.Therefore,Zhejiang Province needs to further promote the efficiency of agricultural water use by improving farmers'income level,increasing agricultural financial investment,promoting water-saving irrigation technology,and improving farmers'consciousness of water-saving.