中文摘要：

从城市水安全的角度出发,阐述了影响城市水安全的因素,引入了水贫困指数作为评价城市水安全的指标,综合考虑影响城市水安全的外在条件和内在因素,根据我国实际情况对水贫困指数中的水安全评价指标进行深入研究,并在此基础上提出适合我国城市水安全实际状况的评价指标。选取水资源状况、利用能力、利用效率、供水设施状况和生态环境5个子系统共20个分指标建立评价指标体系。以甘肃14个地州市为例的应用,证明了该指数和模型可以清晰地反映影响城市水安全因素及其相关特征,并且通过城市水安全分级模型,可以确定某些特定城市水安全的等级,它为城市水安全预警机制的制定提供了依据。

英文摘要：

This study introduces a water poverty index for evaluation of urban water security with consideration of all the security factors. We distinguished external and internal security factors and analyzed this new index and all the other indexes for an evaluation under the existing urban conditions in China, and then adjusted these indexes to new values suitable for the conditions. To establish a corresponding evaluation index system of 20 sub-indexes, selected were five subsystems： water resource status, utilization capacity, utilization efficiency, water supply facilities, and ecological environment. Application to 14 cities in Gansu province shows that this model and the index system can well reflect the water security factors and their behaviors. With this approach, water security grade was determined for certain cities using its urban water classification model. The system would provide a basis to development of early warning mechanisms of urban water security.