赤峰市郊区“三北”防护林建设,经过郊区各族人民12年的共同努力,取得了令人瞩目的成绩。森林覆盖率由1978年的12%增加到1990年的31.8％,有林面积达到277.6万亩。使郊区风沙干旱、水土流失、生态失调的局面有了较大改善,对郊区农牧业生产的发展,发挥了显著的生态效益和经济效益。为了总结经验,进一步搞好“三 The construction of the “Three Norths” shelterbelt on the outskirts of Chifeng City has made remarkable achievements with the concerted efforts of people of all ethnic groups in the suburbs for 12 years. Forest cover increased from 12% in 1978 to 31.8% in 1990, with a forest area of ​​2,776,000 mu. The situation of drought, soil erosion and ecological imbalance in suburban wind farms has been greatly improved and the ecological and economic benefits have been exerted to the development of agricultural and animal husbandry production in the suburbs. In order to sum up experience, to further improve the "three