安徽省水资源利用效率时空分异及其影响因素研究--基于DEA-Malmquist模型

Study on Temporal and Spatial Differentiation and Influencing Factors of Water Resources Utilization Efficiency in Anhui Province:Based on DEA-Malmquist Model

提升水资源利用效率对区域经济发展具有重要意义。基于安徽省2011—2020年面板数据,利用Malmquist指数与Tobit回归模型对安徽省水资源利用效率时空分异及其影响因素进行研究。结果表明:安徽省2011—2020年水资源利用效率整体呈现出波动下降的趋势,由2011年的0.939下降至2020年的0.869,合肥、淮北、亳州、宿州和黄山水资源利用效率较高而淮南、马鞍山、宣城和池州水资源利用效率较低;安徽省2011—2020年全要素生产率指数为0.989,合肥、淮北、马鞍山、芜湖、铜陵、安庆和黄山全要素生产率指数大于1,技术进步明显;人均GDP、第一产业比重和农业用水比重的提高对水资源利用效率起正向推动作用,而人均用水量提升会阻碍水资源利用效率的提高。此研究结果可为政府部门制定相关政策提供参考。

Improving water resources utilization efficiency is of great significance to regional economic development.Based on the panel data of Anhui Province from 2011 to 2020,this paper uses Malmquist index and Tobit regression model to study the temporal and spatial differentiation and influencing factors of water resources utilization efficiency in Anhui Province.The results show that:the overall water resources utilization efficiency of Anhui Province showed a fluctuating downward trend from 2011 to 2020,from 0.939 in 2011 to 0.869 in 2020.The water resources utilization efficiency of Hefei,Huaibei,Bozhou,Suzhou and Huangshan was higher,while that of Huainan,Maanshan,Xuancheng and Chizhou was lower;The total factor productivity index of Anhui Province from 2011 to 2020 is 0.989,and the total factor productivity index of Hefei,Huaibei,Maanshan,Wuhu,Tongling,Anqing and Huangshan is greater than 1,with obvious technological progress;The increase of per capita GDP,the proportion of primary industry,and the proportion of agricultural water use,play a positive role in promoting the efficiency of water resources utilization,while the increase of per capita water consumption will hinder the improvement of water resources utilization efficiency.The results of this study can provide reference for government departments to formulate relevant policies.