Farming Culture of Root Crops in the Regions along the Route of Kuroshio Current : the Islands of Ryukyu Arc and Taiwan

首席调查员在2005/2006年期间，在合作者的协助下，调查了兰屿的亚米人、台湾东部沿海的排湾人和菲律宾吕宋岛北部的Ifugao人的块根作物耕作制度。报告了现场调查资料和数据的分析结果。他还在2006/2007年对巴丹群岛伊瓦坦人的根茎作物耕作制度进行了实地调查。另外，在冲绳岛进行的额外调查。这些调查有助于弄清这些地区根茎作物耕作制度的情况和谱系。研究结果在“连接亚洲与世界的海上走廊：不同文化间的相遇”国际研讨会上发表。本研究项目的结果如下：(1)确认台湾兰屿的亚米人完全继承了根茎作物的耕作制度。另一方面，台湾东部沿海原住民和菲律宾北部巴丹岛的伊瓦坦人部分实行传统的根茎作物耕作制度。(2)兰屿和吕宋的芋头耕作制度类型介于大洋洲和冲绳弧岛之间。(3)首席调查员认为，填充有助于把握根茎作物耕作制度的扩散路线，并强调地区之间耕作文化的不连续性。他认为，这项研究的努力将有助于填补文化的不连续性。

The head investigator surveyed the farming system of root crops of Yami people in Lanyu Island, Paiwan people on the east coast of Taiwan, and of Ifugao people of the northern Luzon in the Philippines, getting assists of the cooperators in 2005/2006. The results of analysis of the materials and data from the field works were reported. He also carried out the field survey on the root crops farming system of Ivatan people of the Batan Islands in 2006/2007. And also, the additional surveys carried out in the Okinawa Island. Those surveys contributed to clear the situations and genealogy of the farming systems of root crops in these regions. The results were reported at the international symposium : Sea Corridors to Join Asia and the World : Encounters between Cultures.The results of this study project are followings.(1) It is identified that Yami people of Lanyu, Taiwan succeeds fully the fanning system of root crops. On the other hand, the native peoples on the east coast of Taiwan and Ivatan people of Batan Island on the northern part of the Philippines are practicing partially the traditional farming system of root crops.(2) The type of the taro cultivating system of Lanyu and the northern Luzon takes a middle position between the type of Oceania and the islands of Okinawa arc.(3) The head investigator thinks that it is useful for grasping the diffusion route of the farming system of root crops, to fill in than to emphasize the discontinuity of the farming culture between the regions. And, he believes that the efforts of this study will contribute to fill in the discontinuity of the culture.