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苦去甜来张家口地区位于永定河流域上游,全区分为坝上高原和坝下山区两个不同地貌单元,总面积33983平方公里。属于永定河流域范围有:怀安、万全、阳原及怀来县的全部,蔚县、涿鹿、崇礼和尚义县的大部,张北、赤城县的局部,总面积14778平方公里(不包括张家口市和宣化县),占永定河官厅以上(不包括妫水河)面积的35％,其中水土流失面积9272平方公里,占我区永定河流域面积的62.7％。 我区永定河流域均属山区,地形复杂,沟谷交错,植被稀疏,土壤瘠薄,水土流失严
Bitter sweet to Zhangjiakou area is located in the upper reaches of the Yongding River Basin, the whole area is divided into two different topography dam and plateau mountainous areas, with a total area of 33983 square kilometers. Belonging to the Yongding River Basin are: Huai’an, Wanquan, Yangyuan and Huailai all, Yuxian, Zhuolu, Chongli and Shangyi most of the county, Zhangbei, Chicheng County, with a total area of 14,778 square kilometers Excluding Zhangjiakou City and Xuanhua County), accounting for 35% of the area above Yongding River’s official hall (excluding Huangshui River), of which 9272km2 is the soil erosion area, accounting for 62.7% of the Yongding River Basin area. The Yongding River Basin in our district is a mountainous area with complex terrain, staggered valleys, sparse vegetation, poor soil and severe soil erosion