| Summary: | 碩士 === 長榮大學 === 土地管理與開發學系(所) === 101 === Taiwan is situated on the boundaries of the Eurasia Continental Plate and the Pacific Ocean Plate where lots of earthquakes could be observed. Also the island was frequently visited by typhoons. Besides, most of the land area in Taiwan was located on hill slopes. Recently, the development in the slope land is inevitable in Taiwan since the densely populated plain areas are highly developed. The combination of the above resulted in frequent number of debris flow events. As for 2013, there are 1,664 potential debris flow torrents in Taiwan, identified by the Council of Agriculture.
Debris-flow hazards can not totally be mitigated by the means of rigid and flexible barriers. Hazard mitigation depends in large part on hazard perceptions and adaptation behaviors of the residents living in the debris potential areas. The research area is the Jiaxian of Kaohsiung. First, basic data about natural and human environment and debris flow are collected. Questionnaire for hazard perceptions and adaptation behaviors of the residents living in the debris potential areas was designed by literature review and field investigation. A reliability test is done for the questionnaire, and the Cronbach alpha is 0.866. It is acceptable. Factor analysis is used later to reduce the set of variables in the dataset to construct three new subjects for debris flow: cognitive perception, anxious perception and adaptation behavior. The results show that cognitive perception and adaptation behavior are positive correlated. Also anxious perception and adaptation behavior are positive correlated. It indicates higher cognitive perception of debris hazard is proportion to positive adaptation behavior. Factors affecting hazard perception and adaptation behavior are obtained by T-test and one-way ANOVA test for the new subjects and background of the residents.
The data showed that there were significant differences in the residents’ “experience for disaster,” “conditions of real environment,” “participation in disaster prevention,” “occupation,” “annual household income,” and “visited frequency of disaster,” for cognitive perception. There were significant differences in the residents’ “experience for disaster,” “conditions of real environment,” “age,” “debris potential area,” “level of education,” “occupation,” “annual household income,” and “visited frequency of disaster,” for anxious perception. There were significant differences in the residents’ “experience for disaster,” “conditions of real environment,” “participation in disaster prevention,” “age,” “debris potential area,” “level of education,” “occupation,” “time of settlement,” “annual household income,” and “visited frequency of disaster,” for adaptation behavior. Common factors are “experience for disaster,” “conditions of real environment,” “occupation,” “annual household income,” and “visited frequency of disaster.” Residents with experience for disaster have to stay in these areas due to their jobs and families with higher annual household income and visited frequency of disaster have higher disaster perception and more positive adaptation behavior. The influencing factors obtained by this study can be referred by the competent authorities to enhance the residents’ adaptation ability for disaster resistance.
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