The "sponge city" concept, developed by architect Kongjian Yu, integrates natural systems into urban design to manage water sustainably. It uses green spaces, permeable materials, and features like rain gardens and wetlands to absorb and store rainwater, mitigating floods and droughts. Widely implemented in China and globally, this model reduces reliance on traditional drainage, enhances resilience to climate change, and improves ecological and public health outcomes.
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