中国绿色水资源利用效率的时空分布差异

基于SBM模型与ML指数,将我国30个省市自治区分为东中西三部分,分析绿色水资源效率值静态与动态变化,且利用泰尔指数分析省际间绿色水资源利用效率的空间分布差异。结果表明:我国省际间绿色水资源利用效率值存在不同程度的波动,且呈缓慢上升的趋势,区域间绿色水资源利用效率呈东部大于中部大于西部的格局;技术进步指数是影响绿色水资源利用效率的主要因素;绿色水资源利用效率地区间差异远高于地区内部差异,且东部对绿色水资源利用效率贡献率最大。

Spatial and temporal distribution differences of green efficiency in utilization of water resources in China

The remaining 30 provinces of China except Tibet are divided into three parts, east, middle and west based on the SBM model and the ML index. The static and dynamic changes of green efficiency of water resources are analyzed, and the Theil index is used to analyze the spatial distribution differences of green efficiency of utilization of water resources among various provinces. The results show that: (1)The green efficiency of utilization of water resources in China varies from province to province, indicating a slow rising trend. The green efficiency of utilization of water resources in different regions shows a pattern of in the east>middle>west. (2)The technological progress index is the main factor affecting the efficiency of water resource. (3)The difference in green efficiency of utilization of water resources among various regions is much higher than that within the regions, and the eastern part has the largest contribution rate.