基于SFA-ESDA的长江三角洲地区全要素水资源利用效率研究

为评估长江三角洲地区水资源可持续利用的可行性,首先利用Shephard水距离函数构造全要素水资源利用效率指标,采用随机前沿分析(SFA)技术计算该指标,并利用ARCGIS软件对长江三角洲地区26个城市的全要素水资源利用效率进行可视化评价。然后采用探索性空间数据分析法对全要素水资源利用效率在2006—2015年间的空间变化特征与规律进行初步探索。研究结果表明,长江三角洲地区的全要素水资源利用效率在研究期间呈上升趋势;全要素水资源利用效率的空间分布呈现出相似的特征,存在空间集聚。

Total factor water efficiency in Yangtze River Delta based on SFA-ESDA

In order to evaluate the feasibility of sustainable utilization of water resources in Yangtze River Delta, the total factor water efficiency(TFWE)index is established by using the Shephard water distance function and calculated by using the stochastic frontier analysis(SFA)technology. The TFWE of 26 cities in the Yangtze River Delta is visually evaluated by using the ARCGIS software. Then, the spatial change characteristics and rules of the TFWE in the decade from 2006 to 2015 are preliminarily explored using the exploratory spatial data analysis(ESDA). The results show that the TFWE in the Yangtze River Delta has an increase tendency during the period from 2006 to 2015. In addition, the spatial distribution of the TFWE exhibits similar characteristics, indicating the existence of spatial agglomeration.