A new framework for assessing and dealing with heat risk from an urban resilience perspective

Abstract

Cities are exposed to increasing environmental threats, having undergone extensive land development and rapid urbanization. Clarifying the effects of urban resilience to risk can provide effective guidance for mitigating heat risk. To our knowledge; however, quantifying these effects from an urban resilience perspective has not been considered in previous studies. Here, we proposed the adaptation-resistance-response heat-related urban resilience assessment system. The system is integrated with the minimum cumulative resistance model to construct a novel heat risk assessment framework. A case study in Shenzhen, China, showed that resilience to heat had a high degree of spatial heterogeneity. More than half of the study area was at a moderate or high level of risk. Our study provided new insights into the differences in heat risk between urban and rural areas. The heat-risk gap between urban and rural areas was lower than that indicated by surface temperatures, due to the diffusion and attenuation of high temperatures. In addition, we discussed the application of resilience to risk governance and emphasize five governance models for risk zoning. The proposed framework facilitated a better understanding of the effect of resilience on risk mitigation, and our results can be used to guide urban planning and risk management.