京津冀城市群水资源循环经济发展的障碍因子分析

An Analysis of the Development Obstacle Factors of Water Resource Recycling Economy in Beijing-Tianjin-Hebei Urban Agglomeration

水资源是城市群经济发展、社会进步的重要支撑,稳定优质的水资源对城市的发展十分重要。京津冀地区作为典型的城市密集区,水资源短缺问题十分突出。以循环经济理念为基础,从供水、用水、排水、再生回用4个维度出发,建立京津冀城市群水资源循环经济综合评价指标体系,应用熵权法确定指标权重,利用障碍度评价模型对其障碍因子进行诊断,最后采用ArcGIS进行空间可视化分析。结果表明:工业废水排放量、排水管道长度和人均日生活用水量是影响京津冀城市群水资源高效循环利用的主导障碍因素。其中,北京的障碍因子主要为工业废水排放量和排水管道长度,天津的障碍因子主要为供水总量和新水取用量,河北的主要障碍因子为工业废水排放量、排水管道长度、再生水利用量以及节约用水量。

Water resource is an important support for national and regional economic development and social progress.Stable and high-quality water resources are very important for the development of cities.Beijing-Tianjin-Hebei region,as a typical urban dense area,has a very prominent water resource problem.In this paper,based on the concept of circular economy,starting from the four dimensions of water supply,water consumption,drainage and recycling,a comprehensive evaluation index system of Beijing-Tianjin-Hebei urban agglomeration water resource recycling economy is established.The application of entropy way to determine the index weight,obstacle degree evaluation model is used to diagnose its obstacle factors,and ArcGIS is finally used for spatial visualization analysis.The results show that industrial wastewater discharge,length of drainage pipes and per capita daily domestic water consumption are the leading obstacles to the efficient recycling of water resources in the Beijing-Tianjin-Hebei urban agglomeration.Among them,the obstacles in Beijing are mainly the discharge of industrial wastewater discharge and the length of drainage pipes while Tianjin is mainly affected by the total amount of water supply and the amount of new water.The main obstacles in Hebei are the discharge of industrial wastewater,the length of drainage pipes,the amount of reclaimed water and the saving of water consumption.