基于EBM模型的长江经济带工业用水效率时空差异及影响因素分析

Analysis on the Spatial and Temporal Differences and Influencing Factors of Industrial Water Efficiency in the Yangtze River Economic Belt Based on EBM Model

中文关键词:  长江经济带  工业用水效率  EBM模型  泰尔指数  Tobit模型

英文关键词:Yangtze River Economic Belt  industrial water efficiency  the EBM model  the Theil index  the Tobit model

中文摘要:

      工业化进程的加快使得工业水资源需求不断增加，工业废水排放量也越来越大，如何提高工业用水效率从而缓解水资源压力成为日益严峻的问题。本文选取工业用水量、工业就业人数、工业固定资本和工业废水治理费用作为投入指标，以工业增加值与工业废水排放量作为期望与非期望产出指标。首先利用EBM模型计算长江经济带2008—2017年工业用水效率，其次利用泰尔指数来分析工业用水效率的区域差距，最后利用面板Tobit模型来分析影响不同地区工业用水效率的驱动因素。结果显示，近年来长江经济带的工业用水效率呈波动下降趋势，不同地区效率差异明显；经济发展水平、工业化程度、技术水平、水资源禀赋和政府环境管制力度对长江经济带的工业用水效率都有一定影响，但存在地区差异。

英文摘要:

      With the acceleration of industrialization, the demand for industrial water resources continues to increase, and the discharge of industrial wastewater is also increasing. How to improve industrial water use efficiency (WUE) so as to relieve the pressure of water resources has become an increasingly serious problem. In this paper, industrial water consumption, industrial employment, industrial fixed capital and industrial wastewater treatment costs are selected as input indicators, and industrial added value and industrial wastewater discharge were selected as expected and unexpected output indicators. Firstly, EBM model was used to calculate the industrial WUE of the Yangtze River Economic Belt from 2008 to 2017; secondly, Theil index was used to analyze the regional gap of industrial WUE; finally, panel Tobit model was used to analyze the driving factors affecting industrial WUE in different regions. The results showed that the industrial WUE of the Yangtze River Economic Belt fluctuated and declined in recent years, and the efficiency difference was obvious in different regions. The level of economic development, degree of industrialization, level of technology, water resource endowment and the intensity of government environmental control all had certain influences on the industrial water use efficiency of the Yangtze River Economic Belt, but there were regional differences.