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大杨树林业局是鄂温克旗境内六个林业局中比较大的一个局。施业区面积97.4万公顷。六十年代,这里到处郁郁葱葱,风景秀丽,是宜林、宜农、宜牧的理想之地。从七十年代起,山火连年不断,据统计1970～1982年这个局共发生山火245起,过火面积181.6万公顷,出动扑火队伍12万余人次,扑火中伤37人,死亡5人,支出扑火经费250万元。不仅给国家在经济上造成严重损失,更重要的是使生态平衡遭到严重破坏。六十年代的美景已不复存在,无论从空中或地面眺望,收入眼底的是一片荒凉的景象,人们也从日常生活中感到了大自然的报复。在六十年代,这个地区虽然阔叶林多于针叶林,但由于天然更新条件好,每年有计划地植树造林,山
Dayangshu Forestry Bureau is Ewenki flag in the six forestry bureau in a relatively large bureau. Shi industry area of 974,000 hectares. Sixties, everywhere lush, beautiful scenery, is Yilin, Yi Nong, Yi Mu ideal place. Since the seventies, the mountain fire has been increasing from year to year. According to statistics, there were 245 mountain fires in this bureau from 1970 to 1982, with an area of 1,816,000 hectares burned. More than 120,000 firefighting teams were dispatched, 37 people were killed in firefighting, and 5 people were killed , Spend 2.5 million yuan expense fire. Not only did the country cause serious economic losses, but more importantly, the ecological balance was severely damaged. The beauty of the 1960s no longer exists. Whether it is viewed from the sky or from the ground, the sight of the eyes is a bleak sight. People also feel the revenge of nature in daily life. In the 1960s, although there were more hardwood forests in the area than coniferous forests, the area was well planted with trees and forests due to good natural regeneration conditions.