神木杨家城的历史学观察

杨家城唐宋时期北部边疆地区重要的城市之一，对杨家城盛衰流变的动态过程及城市功能嬗变原因的考察，可为了解动荡中的陕北社会和当时乡民的生存状况提供一个新的视角，亦为历史时期民族关系的研究提供新的视角。通过对目前的研究工作中存在的城址中各段城墙及三个组成部分的修筑年代问题、有无庙学问题和街道问题的考察可知，杨家城的研究任重道远，地方政府在开发利用和文物保护方面，仍需做大量基础工作。

The Historical Observation of the Yangjiacheng in Shenmu

Yangjiacheng is one of the important cities of the northern border area in Tang and Song dynasties.The investigation on Yangjiacheng’s dynamic process of its ups and downs and the cause of its city functional transformation can provide a new perspective for us to understand the upheavals and living conditions of villagers in northern Shaanxi at that time.It can also provide us with a brand new perspective on the study of the ethnic relations in that historical period.The inspection of the issues existing in the current research,such as the specific time in which the walls and their three components were built and the existence of the schools in Confucius temples and the old streets,suggests that the study on Yanjiacheng is far away from enough,and for the local government,there is still much to be done on the utilization and heritage conservation.