抄録
This study aims to clarify the influence of the policy of bridge construction on the main industry, and proposes Islands promotions with the mainland - an island bridges as a turning point. So, this study considered KABE island in SAGA prefecture as an instance. First, from building process of YOBUKO Bridge, the policy of bridge construction and subordinate policy were defined. Second, grasping the planted area and the destination of farm products of each household, the change of agriculture, the main industry, was clarified. All household could be classified into six types by features of the change of agriculture. Finally, by means of reasons for the change of agriculture the influence by the policy of bridge construction was clarified.
