两汉时期汉中盆地至关中平原交通道路的演变及原因

Changes and Causes of the Traffic Roads from Hanzhong Basin to Guanzhong Plain in Han Dynasty

两汉时期汉中盆地至关中平原的主要交通道路深受这一时期政治经济环境的影响,呈现不同的兴废状况。导致这种历史演变的原因主要有两点:第一,各条道路自身的地理条件;第二,汉中盆地在与关中平原的互动关系中自身地位从上升到东汉时期的下降以及国家重心东移和由此所引发的羌乱的侵扰。

In the western and eastern Han Dynasties, the rise and fall of the traffic roads from Hanzhong basin to Guanzhong plain were conditioned by the political and economical environment of the periods, mostly owing to two causes： first, the geographical condition of the roads as a crucial determinant, and secondly, the rise of Hanzhong basin and its fall in the eastern Han Dynasty in its interaction with Guanzhong plain, as well as the following eastward moving of the nation＇s center, and the invasions of the Qiang people.