Study on Resilience Assessment of Flood and Landslide Disasters in Mountainous Urban Areas
To effectively evaluate disaster resilience in mountainous urban areas,the study focused on the central urban area of Chongqing,a typical mountainous city in China influenced by the flood-land-slide disaster chain. Based on the concept and mechanisms of urban disaster resilience and combined with the causal logic of the Pressure-State-Response (PSR) model,a resilience evaluation index sys-tem for floods and landslides was constructed through the collection and analysis of multi-source data. Landslide pressure resilience was evaluated using machine learning techniques,and the flood pressure and state-response resilience were assessed through a combination of subjective and objective weight-ing analyses with the VIKOR method. The rank-sum ratio comprehensive evaluation method was em-ployed to construct an overall resilience assessment model,measure urban disaster resilience levels,classify resilience grades,and analyze the assessment results. The findings indicated that:(1) High landslide pressure resilience was observed in the western and northwestern regions of the study area,moderate resilience in the central area,and low resilience in the southern and northeastern regions. (2) Flood pressure resilience was lower in the central region of the study area,while the eastern and western regions generally displayed higher resilience,with the outer regions being more resilient than the inner regions. Nanchuan District in the southeastern region of the study area had the highest flood pressure resilience. (3) Yuzhong District,the core urban area of Chongqing,showed the highest state-response resilience,with the spatial distribution of state-response resilience exhibiting an evident de-creasing trend from center to periphery. (4) The spatial distribution of comprehensive resilience did not show distinct patterns,but it was common for an administrative region within the study area to exhibit varying resilience levels,reflecting the uneven development of resilience across different stages.
urban resilienceflood disasterlandslide disaster"Pressure-State-Response" model
万方数据
维普
