Towards sustainable urban water management: an ecological compensation framework for sponge cities

Rapid urbanization and climate change have intensified water-related challenges in urban areas, requiring innovative solutions for sustainable water management. This study critically examines China’s sponge city initiative, which integrates green infrastructure and ecological principles to enhance urban water resilience. The research identifies key challenges, including inadequate planning, design inconsistencies, and financial sustainability issues, which hinder the full realization of ecosystem service benefits. To address these gaps, we propose a novel ecological compensation framework that integrates the ecosystem services framework with urban planning and public payment mechanisms. Our four-step methodology leverages low impact development practices to enhance policy efficacy, aligning urban development with ecological integrity and sustainability. By transitioning from ecosystem service recognition to a publicly funded compensation model, this approach ensures the financial viability of sponge city projects, fosters broad societal participation, and supports resilient urban development. Importantly, the developed framework is adaptable, making it applicable to sponge city initiatives worldwide. It offers a flexible, evidence-based strategy for cities facing similar water management challenges, promoting ecological resilience while ensuring long-term financial sustainability. This study contributes to global urban water management discourse, providing a scalable model that supports integrated, community-backed urban planning and sets a new standard for sponge city development.