STUDY ON APPLICATIOM OF RAINFALL RELATEDE ENVIRONMENTAL RISK MANAGEMENT TO URBAN STORM MANAGEMENT

本研究对城市居民对降雨相关环境风险、淹没风险和环境污染风险的风险认知进行了问卷调查，探讨了公众参与城市雨水管理的方法。1)对淹没风险和环境污染风险进行了表征，讨论了与降雨有关的城市环境风险的背景和影响损失大小的社会因素。2)问卷调查得出以下结果：适当的信息发布将提高社会对环境风险的认识。认识城市环境风险的城市居民会有效地利用已发布的信息，并认识到公众参与风险管理方案的必要性。3)为了提高公众意识，有必要鼓励城市居民参与风险管理，并重新考虑实施风险沟通的技术术语。4)雨水管理是城市水循环的起点，涉及许多与水循环有关的政治课题。5)讨论公众参与对城市雨水管理的重要性，风险管理过程从城市居民的角度进行参考。6)公众参与风险管理方案的重要性，如雨水利用和家庭危险废物管理，7)提出了以城市水循环再生和城市环境营造为目标的城市雨水管理方法论。有必要为参与者解释和传递优势。讨论了扩大参与者的必要性。

In this study, a questionnaire survey about risk cognition of urban residents on rainfall related environmental risk, inundation risk and environmental pollution risk, has conducted and methodology of public involving urban stormwater management is discussed. Following results have been obtained.1) Characterizing inundation risk and environmental pollution risk, background of rainfall related urban environmental risk and social factors which influence damage magnitude has been discussed.2) The questionnaire survey obtains following results, ■Appropriate information release would raise social awareness of environmental risk. ■Urban residents, who cognize urban environmental risk, would utilize released information effectively and recognize necessity of public involving options to manage risks.3) To raise public awareness, incentive for urban residents to involve risk management and reconsideration of technical terms to practice risk communication is necessary.4) Management of rainwater, which is starting point of urban water cycle, concerns a numbers of political subjects relating water cycle.5) Discussing the importance of public involvement for urban stormwater management, risk management process is referred from the viewpoint of urban resident.6) The significance of public involving risk management options, such as rainwater utilization and household hazardous waste management, for the urban stormwater management is discussed.7) A methodology of urban stormwater management aiming at urban water cycle regeneration and urban environment creation is proposed. It is necessary to explain and transfer the advantages for participants. The necessity expanding the participants is discussed.