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This paper is intended to learn from Okushiri Island which was suffered serious damage in 1993 and discusses tsunami as a key hazard which causes disaster. The purpose of this study is 1) to grasp the attributes, disaster experience, evaluation of disaster reconstruction and the consciousness of islanders and 2) to make the structure of evaluation of disaster reconstruction clear. A questionnaire survey for all 1,433 householders on the island was employed in 2015. As a result, self-help and mutual aid were supported as the most strengthening countermeasures against future disasters. In addition to this, the quick recovery from the damage and the comprehensive recovery process received positive evaluation from the viewpoint of recovery of the basis of their livelihood. However, the awareness of self-help of islanders who resided after the disaster was deteriorated and disaster prevention measures using parks, green spaces and disaster prevention forests were not emphasized in islanders' awareness. In conclusion, the promotion of understanding of ecosystem functions which are assumed to be used just after a disaster was suggested.
