乌兰巴托位于群山环绕的盆地中，这使得来自燃煤发电厂和家庭的烟雾和有害气体容易聚集。大多数冬天的早晨，浓重的雾霾笼罩着市中心的公寓和蒙古外郊区传统的圆形蒙古包 (Ger)。

BEIJING, Feb. 24 (Xinhua) -- China aims to basically eliminate severe air pollution by 2025, the final year of the 14th Five-Year Plan (2021-2025), Li Tianwei, an official with the Ministry of Ecology ...