Trade-off and synergy relationships in grey-green infrastructure influence regional inequality in extreme rainfall-flood resilience across 15 urban agglomerations in China Publication date: 1 October 2026 Source: Sustainable Cities and Society, Volume 149 Author(s): Jinyuan Ren, Xin Yao, Zhiqiang Xie, Hang Lv, Lei Wang, Tirong Xiao, Yanfeng Huang, Zhongliang Cai