摘要
基于全局DEA方法测算了1997～2015年长江经济带11省市的农业用水全局技术效率,并运用Moran’s I指数和空间计量模型分析了农业用水效率的空间关联度和空间效应。研究表明:(1)长江经济带农业用水全局技术效率表现出整体稳定上升但地区间不平衡的特征,且地区之间存在显著的正空间自相关;(2)空间计量模型的估计结果表明地区之间农业用水全局技术效率存在显著的空间溢出效应,本地农业用水效率不仅受到邻接地区的影响,还会受到非邻接地区的影响;除了地理因素之外,经济发展和生产力水平相近也有利于地区间农业用水主体相互学习高效率的用水模式,从而引发农业用水效率的空间溢出效应,促进整体农业用水效率的提升;(3)总用水量中农业用水量所占的比例高,会使得农业用水效率显著降低;水利设施建设以及农业机械化程度都会对农业用水效率产生显著的正向促进效应。
Based on the DEA method,this paper estimates the agricultural water use efficiency of 11 provinces in the Yangtze River Economic Belt,then Moran ’s I index and spatial econometric model are introduced to analyze the spatial correlation and spatial effect within panel data from 1997 to 2015. The results show that:(1)During the study period,China’s agricultural water use efficiency of the Yangtze River Economic Belt shows overall stable rise but imbalance characteristics among different areas,and there is a significant positive spatial autocorrelation between regions.(2)Regression results of spatial econometric model show that there is a significant spatial spillover effect of agricultural water use efficiency among different areas,indicating local agricultural water use efficiency is affected by both adjacent and non-adjacent areas;in addition to the influence of geographical factors,the similar level of economic development and productivity is conducive to the mutual learning of highefficiency water use patterns,thereby triggering the spatial spillover effect of agricultural water use efficiency,promoting increase of the overall agricultural water use efficiency.(3) The high proportion of agricultural water used in the total water consumption will significantly reduce agricultural water use efficiency;the construction of water conservancy facilities and the degree of agricultural mechanization will have a significant positive effect on agricultural water use efficiency.
作者
马剑锋
佟金萍
王慧敏
王圣
MA Jian-feng;TONG Jin-ping;WANG Hu-min;WANG Sheng(School of Business,Hohai University,Nanjing 211100,China;School of Business,Changzhou University,Changzhou 213164,China;State Power Environmental Protection Research Institute,Nanjing 210031,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2018年第12期2757-2765,共9页
Resources and Environment in the Yangtze Basin
基金
国家重点研发计划项目"‘水-能源-粮食’协同安全保障关键技术"(2017YFC0404600)
国家社会科学基金"基于降雨量指数保险的农业干旱风险控制及对策研究"(15BGL128)
国家社会科学基金"用水效率异质特征下跨区域多部门水权配置及政策模拟研究"(14BGL097)
关键词
农业用水
全局技术效率
空间效应
空间计量
agricultural water
global technology efficiency
spatial effect
spatial econometrics
作者简介
马剑锋(1978-),男,博士研究生,主要研究方向为水资源管理与政策.E-mail:mjf@cczu.edu.cn;通讯作者:王圣,E-mail:wangsheng9999@126.com.
