The study for northern trade of Middle Ages and early modern times and infiltration of Ezochi

本研究以各种考古遗迹及古代文献为依据，厘清了津轻海峡及长谷海峡外人员及物资流动的实际情况。本研究阐明了日本人在历史上进入北海道、库页岛、千岛群岛江藏地区的时间和途径。由此，日本在政治上或经济上对江藏的渗透过程变得清晰起来。日本人和日本产品的传入对爱奴文化的形成和变迁产生了怎样的影响。

This study clarified the actual situation of the movement of persons and supplies beyond Tsugaru Strait and Soya Channel based on both variety of archaeological remains and ancient documents. This study elucidated it how and when Japanese went into the Hokkaido, Sakhalin, Chishima area called Ezochi in history. As a result, the process that Ezochi was infiltrated in politically or economically by Japan became clear. I considered it what kind ofinfluence advance of Japanese and the Japanese products to Ezochi Ezo place had on the formation and transformation of the Ainu culture.