Paper
Risk Assessment of Rainstorm and Flood Disaster Based on Multi-index
- Authors:
- Xianfen Xie; Wanrong Gu; Binhui Wang; Qichao Yang
- Abstract
- Flood disaster is a common comprehensive disaster, and Guangdong Province is one of the areas suffering serious flood disaster. This paper makes an in-depth analysis of the flood disaster in Guangdong through disaster degree and risk zoning. In disaster degree analysis, according to the statistical analysis result on the data of rainstorm event in Guangdong Province during 1997-2007, selecting related indicators in human victims, housing victims, crops victims and economic losses, establishes the Guangdong flood disaster degree comprehensive evaluation model. In the modeling process, based on the characteristics of the actual data of Guangdong, this paper establishes flood disaster assessment criteria, and designs standard function for each indicator. In addition, using entropy evaluation model of Fuzzy synthetic evaluation method adjusts each indicator’s weight and finally calculates the rainstorm victim degree index (IPCE) by year and comprehensive rankings. In risk zoning analysis, firstly selecting related indicators in risk, vulnerability, regional development and regional resilience, based on these build flood disaster risk assessment system, and then also using entropy evaluation method calculates risk index (IGWR) of 21 cities in Guangdong, according to these values divided the 21 cities into four grades, last using R statistical analysis software makes out the risk zoning map. The results show that the annual ranking of IPCE and risk zoning is reasonable and realistic.
- Keywords
- Rainstorm; Disaster Degree; Entropy Evaluation; Evaluation Model; Risk Assessment; Multi-index
- StartPage
- 10
- EndPage
- 16
- Doi