Research of political structure and community structure at Kofun period based on trend of small-scale mounded tomb.

在字型和比例上，古风时期的特点都很严重，一直存在着很大的差异。本研究试图通过对小规模墓葬的关注，从一个新的侧面厘清高芬时期的政治结构和社区结构。有必要澄清该地区小规模墓葬的具体方面，作为审查这一问题的基础工作。以东北地区南部为个案，并在此基础上与各地进行比较研究。从小规模墓葬的分布情况来考察社会单位。一个以农业日产量为单位的联合社会存在了。这个单位是与村子在几个地方组成的。人们认为，这种联合社会是构成科芬时期社会的基本单位。当科芬时代开始时，许多小规模的墓葬被广泛修建。由此可见，小规模墓葬中的等级制度的广泛参与是不可或缺的。

On both sides of type and the scale, the feature of Kofun period grave, big differences always exists. This research tries to clarify a political structure and the community structure of Kofun period from a new side by paying attention to small-scale mounded tomb. It is necessary to clarify concrete aspects of small-scale mounded tomb in the region as basic work to examine this problem. The case study was done for the southern part of the Tohoku region, and it made comparative study with various places based on this.Many small-scale mounded tombs were actively constructed in various places at Kofun period. The unit of the society was examined from the distribution situation of small-scale mounded tomb. A joint society that became the unit of daily agricultural output existed. This unit is formed with the village in several places. It is thought that such a joint society was a basic unit that composes Kofun period society.When Kofun period was begun, many small-scale mounded tombs were widely constructed. This shows that wide participation of the hierarchy buried in small-scale mounded tomb was indispensable.