Research on Flood Risk Assessment Model at Regional Scale

Global climate changes and human activities have a profound impact on disaster environment and formation mechanism of waterlogging disaster, exacerbating the uncertainty of waterlogging disaster and highlighting complexity and difficulty coping with the water disasters of farmland. A large number of researches on risk assessment and prediction of flood disaster have been carried out at home and abroad, and this study concluded the research progress of this direction in recent years in terms of six aspects including the connotation of disaster risk, comprehensive assessment of flood risk based on index system, the numerical models of flood disaster risk assessment, the regularity analysis of different carriers, the influence of environment changes on flood disaster risk and uncertainty of flood disaster and finally analyzed problems in the research and the future directions of development.