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	A new assessment model for evacuation vulnerability in urban areas
	Ma X. Y.; Pei, T.; Song, C.; Zhou, C. H.
	2016
关键词	Evacuation vulnerability Critical Cluster Model (CCM) Graph Theory stepwise spreading adjacency matrix incidence matrix multiobjective approach emergency shelters location system gis
英文摘要	In the high-speed urbanization process of China, the urban population has been increasing significantly, leading to a high-density aggregation of population. However, the sharp increase in population density has not produced commensurate improvements in the road networks. On the contrary, the population increase induced a serious evacuation vulnerability, which cities experience during various hazards and catastrophic events. Therefore, research on evacuation vulnerability is important to urban planning. To assess the evacuation vulnerability, the optimal and worst scenarios should be considered because all possible evacuation plans occur between these extremes. However, most previous evacuation vulnerability studies are based on the worst-case scenario, only providing an upper bound of a potential evacuation assessment. To provide a more comprehensive theoretical basis for decision-makers to understand the consequences caused by all possible evacuations, this paper proposes an optimal evacuation vulnerability assessment model that provides the lower bound on potential evacuation difficulties. The model is solved by a stepwise spreading algorithm based on Graph Theory. Subsequently, to evaluate the effectiveness of the model, the study adopts the model to assess the evacuation capability of different road network topologies. A comparison with previous research was performed. The model was demonstrated in an application to the South Luogu Alley of Beijing, China. The significance of this paper is that the combination of our model with previous research may provide a more complete theoretical basis for an evacuation vulnerability assessment.
出处	International Journal of Geographical Information Science
卷	30
期	12
页	2401-2420
语种	英语
ISSN号	1365-8816
DOI标识	10.1080/13658816.2016.1177640
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/42763]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Ma X. Y.,Pei, T.,Song, C.,et al. A new assessment model for evacuation vulnerability in urban areas. 2016.

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