The Study on materials, population and cultural exchanges in the ancient Tohoku and Hokkaido districts.

本比较研究计划对分布于7、8世纪的东北、北海道地区的陶器进行与地域相关的时间跨度年表，通过详细提取分类类型来分析陶器群体的各个方面，并探讨人口、物资的流动和文化交流的各个方面。从2003学年到2006学年，我和熊谷基雄共同研究员与东北和北海道地区的15名研究人员建立了7个讲习班。我们观察同样的材料，互相交换意见，以达到共同的认识。通过这项研究，我们可以构建一个陶器年表。因此，我们可以得到东北和北海道地区的时间顺序，我们以此来考虑历史运动。我们发现了四个地区的陶器图案分别是栗谷，相津泻，北北泻-栗谷，北海道-栗谷。这些模式具有相同分类类型下的公共组件。我们假设每个地区的人们共享信息和技术以及他们的生活方式。最后，我们可以阐明这些地区之间的人口流动、物质流动和文化交流。

This comparative study plans to make a chronology of earthenwares, a time span interrelated with region, which distributed over the Tohoku and Hokkaido districts in the seventh and eighth centuries, to analyze aspects of group of earthenwares by extracting the type of classification in details, and to approach movements of population, materials and aspects of cultural exchanges.From the academic year of 2003 to 2006, I and Kimio Kumagai co-researcher set up seven workshops with fifteen researchers of the Tohoku and Hokkaido districts. We observed the same materials, and exchanged our opinions each other in order to attain a common perception.Thorough this study we can construct a chronology of earthenwares. As a result we can get a chronological order of the Tohoku and Hokkaido districts by which we consider historical movements.And we found out four areas of the earthenware patterns of Kurigakoi, Aizugata, Hokubugata-Kurigakoi, and Hokkaido-Kurigakoi. These patterns have common components under the same type of classification. We suppose that people in each area shared informations and techniques as well as their lifestyle. Finally we can illuminate movements of population, materials and cultural exchanges between these areas.