摘要
运用考虑非期望产出的超效率SBM-Undesirable模型,在全要素用水效率测度框架下,对"十二五"期间化肥污染排放约束下的广西种植业用水效率进行测度。在此基础上运用探索性空间数据分析方法(ESDA)对种植业用水效率的时空格局演变规律与特征进行了初步探索。研究结果表明:2011-2015年,化肥污染排放约束下的广西种植业用水效率整体不高,只有南宁、防城港、崇左达到有效前沿面,形成"三足鼎立"态势。研究期内,污染排放约束下的广西种植业用水效率呈现显著正向的全局空间自相关性,但其空间溢出效应逐年减弱。不同地市种植业用水效率的空间关联类型变化较小,广西有一半以上地市稳定存在低低(LL)集聚区;高高(HH)集聚区呈现由南宁、防城港、崇左组成的三核心热点集聚模式。
Under the framework of total factor water use efficiency measurement,the super-efficiency SBM-Undesirable model considering undesired outputs is deployed to measure the water use efficiency of Guangxi＇s planting industry under chemical fertilizer pollution emission constraints. On this basis,preliminary explorations are made on the spatial-temporal pattern evolution laws and features of planting industry water use efficiency by using an exploratory spatial data analysis method（ ESDA）. Research results indicate that： from 2011 to 2015,the water use efficiency of Guangxi ＇ s planting industry under pollution emission constraints was not high on the whole,and only Nanning,Fangchenggang and Chongzuo reached an effective frontier and formed＂a situation of tripartite confrontation＂. During the study period,the water use efficiency of Guangxi ＇ s planting industry under pollution emission constraints showed a significant positive global space autocorrelation,but its spatial spillover effect weakened year by year. There is relatively few changes in the spatial correlation types of planting industry water use efficiency in different cities,and more than half of the cities in Guangxi stably have low-low agglomeration areas;and the high-high agglomeration areas presents a three-core hotspot agglomeration model consisting of Nanning,Fangchenggang and Chongzuo.
作者
陆泉志
陆桂军
范稚莲
罗明智
莫良玉
LU Quan-zhi;LU Gui-jun;FAN Zhi-lian;LUO Ming-zhi;MO Liang-yu(College of Agriculture,Guangxi University,Nanning 530004,China;The Guangxi Zhuang Autonomous Region Technology Information Institute,Nanning 530022,China;Guangxi Academy of Sericultural Science,Nanning 530007,China)
出处
《中国农村水利水电》
北大核心
2018年第9期7-11,24,共6页
China Rural Water and Hydropower
基金
广西自然科学基金项目(2014GXNSFAA118072)
作者简介
陆泉志（1994-），男，硕士研究生，主要从事农业经济及科技政策研究。E-mail：624245382@qq．com。;通讯作者：莫良玉（1968-），男，博士，副教授，主要从事植物营养学及土壤重金属污染修复机理研究工作。E-mail：moly@gxu．edu．cn。
