Risk Assessment for Regional Flood Disaster in Hubei Province based on GIS

摘要

Regional flood disaster risk assessment is an important part of regional flood disaster risk management. Taking the interaction among the disaster causing factors, the hazard inducing environment and the disaster bearing bodies into consideration, the risk assessment index system and model of flood disaster are established, then the analytic hierarchic process was used to confirm the weight of the indexes, fin·ally the spatial analysis method based on Geographic Information System was carried out to assess the risk for flood disaster of Hubei province. The results show that: (1) The hazard degree of disaster causing factors is relatively high in the east and southwest part of Hubei province; (2) The sensitivity of hazard inducing environment in the east and southwest part of Hubei province are relatively high; (3) The vulnerability of disaster bearing bodies in the Jianghan plain area such as Wuhan city and the surrounding areas are high; (4) The area with high risk of flood disaster in Hubei province is mainly concentrated in the Jianghan plain, which is consistent with the actual situation.