A Study of the Formation Process of Agrarian Society in the Ryukyu Island Chain During the General Period of the 5th to 7th Centuries

1.to region2.to考古学和自然科学相结合的方法，尽可能有效地描述了这些地区的古代人类文化，证明ruins3.to了7 ~ 8世纪在这些地区进行绿色蜗牛贸易的假设<th><th>。以下是这项研究的结果（1）（7）：（1）对伊势岛的长良原东贝壳冢的三个遗址以及奄美大岛的荒沟和松之户遗址进行了挖掘。这些遗址位于琉球群岛的海岸沙丘上。人类生活的痕迹被认为可以追溯到公元前2 <nd>~ 10<th>世纪（2）。对从奄美和冲绳地区6 ~ 8世纪的文化层中收集的植物、动物和贝壳遗骸<th><th>进行了分析。这一分析证明了这两个地区生存生活方式的差异。的d ...更多信息 这些差异与特定的环境因素有关。（3）两具遗骸的发掘表明，两具遗骸都含有根系形成的孔隙系统。（4）利用地理学和沉积学分析对奄美大岛两处遗骸的自然环境进行了调查。调查显示，遗迹的形成过程与珊瑚礁的形成过程是相关的。(5).A绘制了<th><th>在奄美大岛和冲绳发现的公元5 ~ 8世纪的陶器制作的时间轴。（6）.有证据表明，在7世纪和8<th>世纪，人们故意大量采集绿蜗牛。在奄美大岛的三个遗址中，这一事实得到了证实。在这段时间里，绿蜗牛很有可能被用于贸易。（7）通过结合沉积学和考古学的调查，研究人员能够对迄今未观察到的文化层有一定的了解。仔细观察白色砂（壤土）层，发现文化层的痕迹。到目前为止，研究人员还无法确定文化层是否确实存在于壤土层中。少

1.to clarify any differences between the Amami region and the Okinawa region2.to describe ancient human cultures in these areas as effectively as possible through a combination of archaeological and natural science techniques used in the investigation of ruins3.to prove the hypothesis that Green-snails were traded in these areas during the 7^<th> to 8^<th> centuriesThe following are the results of this research ((1)〜(7)) :(1).Excavation was completed on the three ruins of Nagarabaru East Shell Mound at Ie Island, as well as the Aragou and Matsunoto remains at Amami-Oshima Island. These sites are located on the coastal dune of the Ryukyu Islands. Traces of human life observed are believed to date back to the 2^<nd> to 10^<th> centuries B.C. (2).Plant, animal and shell remains collected from cultural layers dating from the 6^<th> to 8^<th> centuries in the Amami and Okinawa regions were analyzed. This analysis proved the difference in the subsistence lifestyle of those two regions. The d … More ifferences were linked to particular environmental factors. (3).The excavation of two remains showed that both contained pore systems formed by roots. (4).The natural environment at two remains on the Amami-Oshima Island was investigated using geographical and sedimentology analyses. This investigation revealed that the, processes involved in the formation of the ruins and the coral reef were related. (5).A timeline was drawn up of the creation of earthenware vessels dating from the 5^<th> to 8^<th> centuries found on Amami-Oshima and Okinawa Islands. (6).Evidence was uncovered to suggest that during the 7^<th and 8^<th> centuries Green-snails were collected intentionally in large quantities. At three ruins on Amami-Oshima, this fact was confirmed. There is a high probability that Green-snails were used for trade during this time. (7).By combining investigations in sedimentology and archaeology, researchers were able to gain some understanding of cultural layers hitherto unobserved. Careful observation of the white sand (loam) layer revealed traces of cultural layers. Up until now, researchers had been unable to determine whether cultural layers were indeed present in the loam layer. Less