Abstract
With the expansion of urbanization, the interaction between different hazards has become increasing evident. In order to promote sustainable development of urban areas, it is particularly important to systematically analyze and evaluate urban safety and security under the coupling effect of multi-hazard risks. In response to the practical needs of urban safety and security assessment practice, this paper constructs an application-oriented urban safety and security quantitative assessment methodology. First, following the comprehensive risk management perspective, the logical relationship between urban safety and security elements is analyzed. It proposes “comprehensive screening, key analysis, and comprehensive evaluation” as a new assessment concept. Second, a system of urban safety and security assessment methods consisting of a weighting method and a function model is constructed. The function model includes two sub-models: a quantitative risk assessment model that considers triggering effects and a quantitative assessment model of emergency capacity that considers the evolution of emergencies. Finally, the method was applied to a coastal urban area in south China. The case study proved that the proposed method system can not only effectively evaluate various disaster risks and emergency capacity but also provide evidence for the formulation and implementation of urban safety and security management measures.
Highlights
With the continued advance of urbanization, more and more people will be living in urban areas
The safety and security grade of the whole urban area is at grade 3, which is in a critical safe status
This paper proposes the idea of “overall screening, key analysis, and comprehensive evaluation” for urban safety and security assessment and, on this basis, constructs the framework of urban safety and security assessment methodology
Summary
With the continued advance of urbanization, more and more people will be living in urban areas. 54 percent of the population live in urban areas, and the proportion of the global urban population is expected to increase to 66 percent by 2050 [1]. To promote the sustainable development of urban areas, it is important to understand the urban area with their smart and safe concepts as interconnected parts [3,4]. Urban safety and security planning and resilience construction have paid more attention to systematic thought. In this context, a systematic analysis of urban safety and security considering the comprehensive multi-hazard risk is important for improving urban safety resilience and promoting sustainable urban development
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