In the villages along the Miyakawa, a river in the Hida district of Gifu Prefecture, many traditional wooden folk and store houses have remained. In this report, the transformations in the wall construction of these houses are presented. The following three areas were researched: Tanekura, Sangawara, Suganuma, with the following findings.
1.Due to the shortage of timber resources in the 1900s and the expansion of rice fields in the 1920s, the board walls of the folk houses built on alluvial fans and terraces changed to mud walls. In the mountain villages, on the other hand, walls made of wood continued to be seen.
2.Between the Meiji and Postwar Period, the shortage of timber continued. The mud walls of the wooden storehouses situated in the villages on the alluvial fans, where rice fields had continued to expand, finally changed to thick mortar walls. In the villages built on terraces and mountains, the walls of storehouses saw a transformation from thick boards to thin boards.