A Study of Urban Natural Disaster Vulnerability Assessment Based on PCA-TOPSIS Method

摘要

This article established the urban natural disasters vulnerability evaluation index system from the perspective of disaster system's carriers that cover economic, demographic characteristics, urban morphology and disaster management, etc. In this paper, Principal Component Analysis (PCA) and TOPSIS methods were adopted to build the evaluation model, through which the vulnerability of 21 cities in Sichuan Province to natural disasters were assessed. Moreover, we made comparative analysis among the 21 cities mainly focused on the overall vulnerabilities and further provided some useful advice on enhancing the disaster response capacity for city managers.