摘要
为全面客观了解我国农业绿色水资源利用效率的时空分异特征,推动水生态文明建设和农业绿色用水,运用包含非期望产出的SE-SBM模型,以农业面源污染作为非期望产出,测算了2002—2020年中国31个省级行政区的农业绿色水资源利用效率,并采用ML指数、泰尔指数、“效率-生产率”方阵分析了水资源效率的时空分异特征。结果表明:26个省级行政区的农业绿色水资源利用效率呈平稳波动状态,且大小顺序为东部地区、东北地区、中部地区、西部地区,跨期动态发展各具优劣势;ML指数先减小后增大,73.68%的研究期内EC与TC呈“此消彼长”状态;水资源效率总体差距的62.11%来自主要由西部地区构成的区域内差距,但区域间差距也不可忽视。
In order to comprehensively and objectively understand the characteristics of spatial and temporal differentiation of utilization efficiency of agricultural green water resources in China,promote the water ecological civilization construction and utilization of agricultural green water resources,this paper uses SE-SBM model considering undesirable outputs to calculate the utilization efficiency of agricultural green water resources of 31 provinces in China from 2002 to 2020,taking agricultural non-point source pollution level as the undesirable output.The ML index,Theil index and“efficiency-productivity”matrix were introduced to analyze the spatial and temporal differentiation of utilization efficiency of water resources.The results show that the utilization efficiency of agricultural green water resources in 26 provinces fluctuates steadily,and the order is Eastern>Northeastern>Central>Western regions.Intertemporal dynamic development has its own advantages and disadvantages.The ML index first decreased and then increased,EC and TC accounting for 73.68%of the study period show the“trade-off”.About 62.11%of the overall gap in utilization efficiency of water resources come from the intra-regional gap mainly consist of western region,but the inter-regional gap can’t be ignored.
作者
马骏
于倩文
MA Jun;YU Qianwen(Business School,Hohai University,Nanjing 211100,China;Coastal Development and Protection Collaborative Innovation Center,Nanjing 210098,China)
出处
《水利经济》
2023年第3期16-22,123,共8页
Journal of Economics of Water Resources
基金
中央高校基本科研业务费专项(B210207028)
沿海开发与保护协同创新中心标志性成果培育专项(2092-B2106120)。
关键词
农业水资源利用效率
农业面源污染
SE-SBM模型
ML指数
泰尔指数
utilization efficiency of water resources
agricultural non-point source pollution level
SE-SBM model
ML index
Theil index
作者简介
马骏(1970—),男,副教授,博士,主要从事资源与环境经济研究。Email:majun1807@163.com。
