2024 Volume 80 Issue 4 Article ID: 23-00089
This paper aims to clear land use changes in disaster risk areas, including flood inundation risk areas, sediment disaster risk areas, and tsunami inundation risk areas, from 1976 to 2016 in the whole of Japan, with land use subdivision mesh data. As results, density-built land use shows an increasing trend in every disaster risk area, at the less degree of increasing in the whole land use of Japan. On the other hand, paddy-field land use shows a decreasing trend at the same degree of decreasing in the whole land use of Japan. In addition, with respect to the land use changes from natural or agricultural land use to urban land use, density-build areas were increased by mainly paddy-field in flood inundation risk areas, paddy-field and forest in sediment disaster risk areas, and paddy-field and non-paddy farm in tsunami inundation risk areas. These results imply a necessity of preferential treatments of agricultural and natural land-use in response to the type of hazards.
