Explication of Net-Migration Rates by Marital Status In Sapporo

日本的内部迁移统计数据由来自“每个城市基本居民登记”的“内部迁移报告”和来自人口普查的“内部迁移表”代表。这两份报告都没有按婚姻状况分类的数字，未婚人口、已婚人口、丧偶人口和离婚人口的不同移徙模式也没有得到澄清。因此，它们对区域人口结构的影响尚无法解释。本研究以1995-2000年和2005-2010年两次人口普查期间的札幌市为研究对象。估计模型一方面是开发的，另一方面是根据人口普查数据进行自己的重新计算，这些数据是总务省统计局要求的。本研究成功地解释了札幌市两次人口普查期间的婚姻状况净迁移率，开创了人口统计学研究的新领域。

Japanese statistics of internal migrations are represented by 'the Report on Internal Migration' from 'Basic Resident Registrations of each municipality and 'the Tabulation on Internal Migration' from Population Census '. Neither of them contains numbers classified by marital status and the differential migration patterns among never married, currently married, widowed and divorced populations are not clarified. Thus, their influences on regional population structure stay unexplained. This research focused on City Sapporo in two census intervals 1995-2000 and 2005-2010 as a case study. The estimation models are developed on the one hand and the own re-calculations are performed by the population census data, which were requested for the Statistics Bureau, Ministry of Internal Affairs and Communications, on the other hand. This study succeeded in explicating the net-migration rates by marital status in Sapporo in two census intervals and created the new research field in demography.