Spatiotemporal Evolution of Urban Flood Risk in a Mid-Sized City Cluster: A Three-Stage Assessment of Six Northern Henan Cities Around the July 2021 Extreme Event
Post-disaster research on the July 2021 (“7·20”) Henan flood has concentrated on the megacity Zhengzhou, leaving six severely hit mid-sized cities unassessed. This study assesses urban flood risk for Anyang, Hebi, Xinxiang, Jiaozuo, Puyang, and Jiyuan over 2018–2024 (42 city-year samples) on a 12-indicator Hazard–Expos...