大同地区是京津风沙源重点地区之一。日渐恶化的生态环境,不仅加剧了京、津两地沙尘暴的形成,而且严重制约了本地经济的发展。近年来,大同军分区把治理京津风沙源、改善生态环境作为民兵参 Datong area is one of the key areas of sand source in Beijing and Tianjin. The worsening ecological environment not only exacerbated the formation of dust storms in Beijing and Tianjin, but also severely restricted the development of the local economy. In recent years, the Datong-Jun sub-region has taken the control of the source of sandstorms in Beijing and Tianjin and improved the ecological environment as a reference for the militia