Existing technical standards and research achievements related to sponge cities are largely concentrated on construction practices, while studies on evaluation mechanisms and systems for sponge cities remain extremely scarce. In order to construct a comprehensive evaluation system for sponge cities, this paper starts from a top-level design perspective and proposes a sponge city evaluation framework based on the ecosystem services concept. Water ecology, water environment, water resources, water security, institutional development and implementation, and visibility are adopted as first-level evaluation indicators. On this basis, feasible second-level evaluation indicators are extracted through an in-depth analysis of low-impact development (LID) stormwater systems. The analytic hierarchy process (AHP) and fuzzy comprehensive evaluation are introduced as systematic tools to establish a practical evaluation model, which is then applied to the assessment of the Yuelai Sponge City project in Chongqing.
Yang Yi-Hui (Wed,) studied this question.