关键词: 突发事件, 风险信息, 风险感知, 风险传播, 传染病模型

Abstract: In the process of emergency response, the public’s risk perception of emergencies will determine their behavioral choices to a certain extent and thus affect the spread of event risks. Sothis paper analyzes the path relationship among emergency risk information, risk perception and risk communication, introduces infectious disease propagation mechanism in the risk communication process, and builds a risk communication model based on differential equations. Four factors including risk communication threshold, media coverage, group risk perception, and personal risk knowledge level are comprehensively considered, combined with simulation experiments to analyze the impact on risk perception and risk communication behavior. Finally, the validity of the model conclusions is shown by a case study. The research conclusions of this article are helpful to provide theoretical basis and support for relevant functional departments to adjust public risk perception and formulate measures to reduce risks and expand harm.

Key words: emergency, risk information, risk perception, risk communication, infectious disease model