四川省系统化全域推进海绵城市建设

Core Viewpoint - Sichuan Province has achieved historic success in sponge city construction over the past decade, creating a nationally significant model through systematic and comprehensive promotion, enhancing urban water security, improving water environment, and optimizing water resource utilization, providing replicable practices for similar regions [1] Overall Achievements and Scale - As of December 2024, over 40% of urban areas in Sichuan meet sponge city standards, with a total of 1,019 sponge city projects implemented and an investment of 17.78 billion yuan [2] - Suining City is one of the first pilot cities for sponge city construction, with several other cities like Luzhou, Guangyuan, Guang'an, and Mianyang recognized as national demonstration cities [2] - Sichuan has secured 4.4 billion yuan in national sponge demonstration special funds and coordinated 1.055 billion yuan in provincial special funds [2] Innovative Technical Paths and Models - Sichuan has developed various sponge city construction technical paths suited to its diverse geographical and climatic conditions [3] - Suining combines flood control with pilot construction, achieving a "contiguous effect" in sponge construction, recognized as an excellent case nationally, receiving an additional subsidy of 120 million yuan [3] - Luzhou has implemented a systematic governance approach tailored to its hilly terrain, creating a tiered rainwater retention and purification system, recognized for three consecutive years with an A-level rating [3] - Guangyuan has established a "1561" sponge city construction strategy, integrating six major projects, recognized as a model case in the "Ten-Year Achievements of Sponge Cities in China" [3] Institutional Innovation and Replicable Experience - Sichuan has developed a regulatory framework with documents like the "Sichuan Province Sponge City Construction Management Measures" and local regulations in cities like Deyang and Luzhou [4] - Luzhou's sponge city planning and management mechanisms have been included in the Ministry of Housing and Urban-Rural Development's list of replicable policies, establishing a smart management system [4] - Guangyuan has integrated sponge city construction with the renovation of old neighborhoods, while Guang'an has created a coordinated promotion mechanism for sponge city construction [4] - All 20 provincial-level sponge city demonstration cities have established work promotion mechanisms and local regulations, significantly improving urban landscapes and rainwater management [4]