Zhangjiakou dialect张家口方言
zhangjiakou gold张家口金矿
Zhangjiakou fault张家口断裂
Zhangjiakou area张家口地区
zhangjiakou region张家口地区
zhangjiakou fm张家口组
Zhangjiakou City张家口市
Zhangjiakou Formation张家口组
This paper selects Zhangjiakou as study area. This area lies in fragile belt in ecology and environment, and is the backward area of Hebei Province in economy, and also the windward and upper water region of Beijing and Tianjin.
本文以张家口市为研究区，该区地处生态环境脆弱带，是河北省经济相对落后地区，也是京津的上风上水地区。
参考来源 - 张家口市土地资源可持续利用评价研究