关键词: 工业用水效率;节水潜力;随机前沿分析;江苏省;

Abstract: To explore the potential for industrial water saving and sustainable water resources utilization and industrial development, the trans-logarithmic stochastic frontier analysis(SFA) function model was used to calculate the water-using efficiency and water-saving potential of 32 industries in Jiangsu Province from 2016 to 2020.The water-use efficiency and water-saving potential types of 32 industries were analyzed by systematic cluster analysis.The results show that the water use efficiency of all industries in Jiangsu Province doesn't reach 1,and the total industrial water-saving potential is 2.982 billion m3.There remains scope for further water saving among all industries.The 32 industries in the province are divided into four categories according to water-using efficiency.Specific targeted analysis is carried out for each type of industry.The 32 industries in the province are divided into three categories according to their water-saving potential.The industrial water-saving potential of Jiangsu Province shows a pyramid feature.The industries with high and medium water-saving potential involve only five industries, but the sum of their water-saving potential accounts for 97% of the total water-saving potential of the province.This study can act as a reference for industrial water-saving management and optimization of industrial water resource allocation in Jiangsu Province.

Key words: industrial water using efficiency; water saving potential; stochastic frontier analysis; Jiangsu Province;