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城市水安全是保障城市自身及其所处区域可持续发展的基础。通过分析南京市水安全现状及影响因素,从资源、社会、经济、环境四个方面构建了南京市水安全评价指标体系,采用层次分析法确定各指标的权重,并根据权重对指标进行排序,对南京市2005～2009年的水安全状况进行评价。结果表明,南京市近几年的水安全状态处于安全和基本安全水平,水安全状况较不稳定。基于指标权重分析和评价结果比较,从开源节流、提高水资源利用率、提高水源水质和加强水资源的合理分配四个方面给出改善水安全状况的相关建议。
Urban water security is the basis for ensuring the sustainable development of the city itself and its area. By analyzing the present situation and influencing factors of water security in Nanjing, this paper constructs the evaluation index system of water security in Nanjing from the aspects of resources, society, economy and environment, and uses the analytic hierarchy process to determine the weights of each index and ranks the indicators according to the weights. The water security status of Nanjing City from 2005 to 2009 was evaluated. The results show that the state of water security in Nanjing is at a level of safety and basic safety in recent years, and the water security situation is not stable. Based on the analysis of indicator weights and comparison of evaluation results, some suggestions are put forward to improve water safety from four aspects: increasing revenue and reducing expenditure, improving water utilization efficiency, improving water quality and enhancing rational allocation of water resources.