Study On Public Perception Of Urban River Flood Risk

In recent years,extreme weather events have occurred frequently,and the frequency and destructive nature of flood events have continued to increase,causing serious life and economic losses.As the foundation of a country’s social and economic wealth,the interference and destruction of urban flood disasters will exceed the actual scope of floods,resulting in much more serious consequences than in rural areas.Cities with important rivers passing through the city face even greater flood risks.The existing flood risk management mainly relies on the control of engineering measures,and risk analysis also relies more on objective risk analysis.The analysis and management of public risk perception have received insufficient attention.However,in the face of natural disasters,the public is both the disaster carrier and the specific executor of disaster reduction policies.Their risk perception determines how they prepare for potential risks and their behavioral responses to information or hazard warnings.The public’s perception and attitude towards risk also largely determine the effectiveness of risk management strategies.It can be seen that understanding the public’s risk perception is of great significance.However,the public perception analysis of urban river flood risk lacks unified theoretical and methodological guidance,which brings difficulties to its measurement and analysis.Due to the differences in public perception of urban river flood risk due to complex factors,there is insufficient discussion on what factors affect it and how much difference it may exist.Moreover,the spatial attributes of public urban flood risk perception are of great significance but have received little attention from domestic research.Ultimately,there is a gap between the information available from existing research institutions and the needs of local disaster management,which greatly hinders public participation in risk management practices.This study first systematically reviewed relevant literature and,guided by relevant theories,constructed a public perception model of urban river flood risk.Secondly,based on the model,the Lanzhou section of the Yellow River and the Jialu River in Zhengzhou were selected as the research areas for this study.The psychological measurement paradigm and risk perception map method were used to measure the degree and spatial attributes of urban river flood public perception in the Lanzhou section of the Yellow River and the Jialu River in Zhengzhou,and the relationship between their elements was analyzed.The flood risk public perception maps of the two places were drawn.Once again,a comparative analysis was conducted on the public perception measurement results of urban river flood risk.In terms of degree attributes,the differences in perception levels and element relationships between the two study areas were compared and analyzed.In terms of spatial attributes,the objective risk analysis results of this article and relevant research results were used to compare and analyze the differences in subjective and objective risks among different populations.Then,an empirical analysis was conducted on the factors influencing public perception of urban river flood risk,and relevant research results were explained.Finally,corresponding management suggestions were proposed.