Comprehensive disaster-bearing capacity assessment of the urban area using grid cells based on an evidential reasoning method

CHEN Tao; CHEN Zhichao

doi:10.16511/j.cnki.qhdxxb.2018.22.024

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Journal of Tsinghua University(Science and Technology) ›› 2018, Vol. 58 ›› Issue (6) : 570-575. DOI: 10.16511/j.cnki.qhdxxb.2018.22.024

PHYSICS AND ENGINEERING PHYSICS

Comprehensive disaster-bearing capacity assessment of the urban area using grid cells based on an evidential reasoning method

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Abstract

Most studies on regional comprehensive disaster-bearing capacity have been based on large city scenarios with few for urban scenarios with most based on large administrative units, which leads to rough assessment results. This paper describes an index system for urban disaster-bearing capacity assessments based on the actual characteristics of an urban area in eastern China. Evidential reasoning is combined with an analytic hierarchy process to deal with qualitative and quantitative data with 1 km×1 km scale grids to assess the disaster-bearing capacity of this urban area. This paper describes the method to accurately assess the disaster-bearing capacity of the urban area with high resolution assessment results. The index of "anti-disaster ability→spatial factors→major hazard sources" plays a very important role in the whole assessment. These results are in accord with the actual situation in this area. Thus, this assessment method can be used for urban-level emergency management and to improve disaster prevention and mitigation capacities.

Key words

comprehensive disaster-bearing capacity / evidential reasoning (ER) / analytic hierarchy process (AHP) / gridding / urbanization

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CHEN Tao, CHEN Zhichao. Comprehensive disaster-bearing capacity assessment of the urban area using grid cells based on an evidential reasoning method[J]. Journal of Tsinghua University(Science and Technology). 2018, 58(6): 570-575 https://doi.org/10.16511/j.cnki.qhdxxb.2018.22.024

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