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Taiwan, surrounded by the sea, is situated in the intersection region among the Eurasian Plate, the Okinawa Plate and the Philippine Sea Plate. Active orogeny created the formation of mountains and hills in most areas of Taiwan. Massive development on plains and valleys in recent years has saturated their environment. This leads to the development and the use of hillsides the tope topic of concern. Typhoon, rain season, and climate change formed heavy rainfall have often caused massive debris flow disasters. The frequency of debris flow disasters had increased substantially ever since the massive earthquake in Chi-Chi on September 21, 1999. Due to the invasion of Typhoon Toraji and Typhoon Nari with heavy rainfall in 2001, a number of serious debris flow disasters occurred throughout hillside reconstruction areas in northern, southern, and central Taiwan. Tucheng Dist., located in the southwest corner of the Taipei Basin and adjacent to Banqiao Dist. by the northeast, is one of the municipal cities of Taipei and administratively divided into 47 zones. Of which , TingliaoVil. and Yongning Vil. are mostly mountains and hills where they face high frequencies of debris flow disasters. There are three debris flow torrents , accounting for 75 percentage of Tucheng Dist.. Thus, there is a considerable threat to lives and properties of the people in vulnerable debris flow area (Tingliao Vil. and Yongning Vil.). This article intends to analyze and explore the crisis recognition and cognitive behavior of the vulnerable debris flow area protected residents and the adjacent residences in Tucheng Dist. on possible threats of debris flow. i v The results showed there are correlation among subjects’ age, education level, occupation, household size, and residence time. As to the cognition of “The Plan and the Execution to debris flow prevention”, 4.2% of the respondents agreed with its planning and implementation. As to the cognition on the needs to “Simulation, Evacuation and Refuge routes implement practices relating to disaster prevention”, 16.6% of the respondents did not agree with its importance. In the event of disasters, 75% of the respondents felt there is a need to review its rescue mechanism in the aftermath of debris flow disasters. 77% of the respondents thought government officials need to review its rescue mechanism and take into accounts of locals’ opinions. By statistical analysis of the questionnaires, it is inferred that there are significant differences on the subject construct in 7 questions (87.5%). Of the whole questionnaire, occupation is the most influential category, in 9 questions (37.5%). The result of this research may provide reference to future studies, especially for exploring other independent variables. Key words: vulnerable debris flow area、protected residents、crisis recognition、 cognitive behavior
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