基于超效率DEA模型的宁夏工业水资源利用效率研究

提高水资源利用效率是解决水资源短缺问题的关键。利用超效率DEA模型和Malmquist指数法,选取工业耗水量、工业从业人数和工业固定资产净值为投入指标,工业总产值和废污水排放量为产出指标,对宁夏回族自治区2006-2016年的工业水资源利用效率从动态和静态两个角度进行了分析。结果表明:宁夏地区工业用水效率整体良好,技术效率是降低整个自治区工业用水效率的主要因素;银川市和石嘴山市近5年用水状况较为合理且全要素生产率增长较快,吴忠和中卫市劳动力冗余严重,固原市技术和规模方面都最为落后。此研究可为全区工业生产以及资源配置提供科学依据。

Study on the utilization efficiency of industrial water resources in Ningxia based on super-efficiency DEA model

Improving the water utilization efficiency (WUE) is the key to solve the problem of water resources shortage. Based on the super-efficiency data envelopment analysis(DEA) model and Malmquist index method, we selected the industrial water consumption, the number of industrial employees and the net value of industrial fixed assets as input indicators, and the industrial total output value and waste water discharge as output indicators to analyze the industrial WUE in Ningxia region from 2006 to 2016 from dynamic and static perspectives. The results showed that the industrial WUE of Ningxia region was good in general, and the technical efficiency was the main factor reducing the industrial WUE of the region. Yinchuan and Shizuishan had reasonable water consumption and rapid growth of total factor productivity in the past five years. Wuzhong and Zhongwei had serious labor redundancy problems, and Guyuan was the most underdeveloped city in technology and scale. This research provides scientific basis for industrial production and resource allocation in Ningxia.