Abstract
This report is analysed on migration of population in Japan, which is an important problem of the population geography. The Summaries are as follows. (1) Migration of population had increased since Meiji era, and is influenced by the war. There was two movements-one for colonization, the other for centralization to urban area. Now the latter migration is more important. (2) Owing to explain the regional differentiations of migration, in-migration region, small out-migration region and out-migration region are set up according to in-migration ratio, out-migration ratio and net migration ratio. (Fig. 1, 2, 3 and Table) Types of seasonal mobility of migration and migrtion types according to net migration and natural increase are concerned with these migrationregions. (Fig. 6) (3) Migraton ratio forms a concentric circles with the main in-migation region as a center. (Fig 4, 5) (4) Migration in a prefecture is frequent in in-migration region, which is urbanized. In-migration (or out-migration) ratio and migration ratio in a prefecture are total in-migration (or out-migration) ratio. Then these ratios explain migration regions more closely. (5) Migrated population according to population which is classified to birth place shows another integrated result.
