著名的边关要塞“杀虎口”位于右玉县城西北35公里处,除了其地理位置的重要性,环境的恶劣也是远近闻名的。“一年一场风,从春刮到冬;白天点油灯,黑夜土堵门;风起黄沙飞,十年九不收……”形象的民谣是往昔右玉的写照:三丈六的城墙为流沙所埋,全县仅有残次林8000亩,森林覆盖率只有0.3%。因生态环境恶化,风沙干旱、水 The famous fortress border “killing tiger mouth” is located 35 kilometers northwest of Youyu County, in addition to the importance of its geographical location, the harsh environment is also well-known. “A wind a year, blowing from spring to winter; oil lamps during the day and dark earth blocking the door; the wind from the yellow sand fly, ten years nine do not accept ... ” image of the folk is the past portrait of Youyu: Six of the city walls for the quicksand buried, the county only the second residual forest 8,000 acres, the forest coverage rate is only 0.3%. Due to deteriorating ecological environment, wind and sand drought, water