Abstract
With the acceleration of global climate change and urbanization, many large and medium-sized cities in China have been frequently subjected to heavy rains and floods. Thus, the question of how to reduce the impact of floods and achieve rapid recovery has attracted much attention. We use the urban community as the basic unit to examine the living environment, internal facilities, and surrounding environment characteristics of six different types of communities in the Jianye District of Nanjing City. First, we use factor analysis and the binary logistic regression model to analyze pre-disaster preparation, disaster response, and post-disaster recovery. Second, we analyze the resilience of the community at different stages. Then, we explore the influencing factors of the built environment on the resilience of the community. Results show that the built-up environmental factors, such as topography, riverfront, building coverage ratio, green space rate, and land use diversity, have a significant impact on community resilience. Finally, we proposed several suggestions for improving the flood resilience of Nanjing City.
Highlights
Global warming and unplanned urbanization increase urban flooding events [1]
The preparation can be done by different stakeholders and the results reflect the comprehensive outcome of the collaborative efforts of the entire community
To distinguish the resilience of different types of communities, the factor analysis method was used to sort out 26 indicators of community resilience
Summary
Global warming and unplanned urbanization increase urban flooding events [1]. Lives and properties of urban residents have been greatly threatened. The severity of urban flooding is related to precipitation, and affected by the built environment and vulnerability of an urban area [4,5,6]. Green infrastructure can mitigate urban surface water flooding risk. According to recent studies on flood-preventing constructions in Western countries, resilience from urban flooding is caused by several factors, including mixed old and new buildings [17,18], narrow public spaces [19] insufficient water-resistance of building materials [18], the lack of consideration for climate change elements in urban planning [20,21], and the natural aging of drainage systems [22]. Given that the relationship between the built environment and disaster has been confirmed [4,24], preventive measures, such as construction of dams, serve to reduce vulnerability to flooding
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