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商都县是内蒙古乌兰察布盟最北部的县份之一。其西北部同锡林郭勒盟接壤,东部与张家口地区阰邻。这里地处内蒙古高原东缘,海拔高度在1000—1500米之间。其东、南部,属于阴山东端的低丘陵地区;西、北部,地势渐高,之后趋为平缓进入草原地带。商都县恰处于由低丘陵向草原地带过渡的地区。
Shangdu County is one of the northernmost counties in Ulan Qab League in Inner Mongolia. Its northwest border with the Xilin Gol League, the east and Zhangjiakou area neighbors. Here is located in the eastern edge of the Inner Mongolia plateau, altitude between 1000-1500 meters. Its east and south belonged to the low hilly region at the east end of Yinshan Mountain. In the west and north, the terrain became gradually high, and then gradually entered the grassland zone. Shangdu County is just in the transition from low hills to grassland areas.