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数据包络分析(DEA)方法是进行水资源利用效率评价的有效方法。考虑城市水资源运作系统内部复杂的投入、产出关系,运用DEA方法对国内省域城市水资源的利用效率进行了评价,发现整体效率值偏低,且地区间差异明显。原因在于城市未处理污水排放过量,而工业化与城市化建设对城市水资源利用产生双重影响。文末提出相应政策建议,以促进城市水资源综合利用与开发。
Data Envelopment Analysis (DEA) is an effective way to evaluate the efficiency of water resources utilization. Taking into account the complicated input and output relations within the urban water resources operation system, the DEA method was used to evaluate the utilization efficiency of water resources in domestic provinces and cities. The results showed that the overall efficiency value was low and the differences among regions were obvious. The reason is that urban untreated sewage is overdosed, while industrialization and urbanization have a dual impact on urban water use. At the end of the article, we put forward corresponding policy recommendations to promote the comprehensive utilization and development of urban water resources.