いわゆる賈耽「道里記」の「営州入安東道」について

抄録

The account of "Yingzhou ru Andongdao" 営州入安東道 in the Jiadan Daoliji 道里記, which appears at the end of the gazetteer, Xin-Tangshu 新唐書, is an important record based on a work of geography written at the beginning of the ninth century, and it has been well-studied due to its reference to the Bohai 渤海 boundary in the Liaodong 遼東 region. However, two problems remain concerning this record. First, researchers disagree about whether or not it's information refers to the time prior to the rebellion of An-Shi 安史 during the Zhenyuan 貞元 era. Second, and more importantly, is its reliability as a historical source material. Therefore, it is important to interpret this account in order to understand Bohai's rule over the Liaodong area at the time. Here the author first reexamines character of the record and then employs it as a key in knowing Bohai's situation in the mid-eighth century. His conclusions are as follows. To begin with, the account of Yingzhou ru Andongdao puts together information from various time periods. Of this information, the account of the route from Andongduhufu 安東都護府 to Bohai's capital is probably based on information provided for an extremely limited period of time during mid-eighth century and, therefore, should be discounted from the long term historical record. That is to say, the southwest boundary of Bohai between Fushun 撫順 and Muqi 木奇 existed only during the rebellion of An-Shi, when Bohai occupied a very small area of Liaodong. Therefore, when analyzing East Asian relations at various points in time, the research must take into account not only foreign relations but also the domestic affairs of Bohai. In addition, regarding relations between Bohai and Liaodong after the mid-eighth century, it is necessary to read texts both carefully and critically.