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一、火烧迹地概况大兴安岭火烧区位于北纬52°15＇-53°33＇,东经121°51＇-125°5＇,树种单一,林分主要由落叶松Larix gmelini Rupr.、樟子松pinus sylvestris var.mongolica Litv.和白桦Betula platyphylla Suks.组成。1987年5月,该地区发生特大森林火灾,火灾面积133万ha,过火有林地和疏林地面积114万ha,森林生态环境受到严重破坏。1989年,火烧迹地上暴发次期性蛀干害虫(主要是天牛和小蠹虫),火烧立木和楞堆都严重被害,林
First, the burned area Overview Daxinganling fire located in the latitude 52 ° 15’-53 ° 33 ’, longitude 121 ° 51’-125 ° 5’, a single species, stand mainly by Larix gmelini Rupr., Pinus sylvestris var.mongolica Litv. and Betula platyphylla Suks. In May 1987, a superficial forest fire broke out in the area, with a total area of 1.33 million ha. There was 1.14 million ha of woodland and sparse forest overheated and the ecological environment of the forest was severely damaged. In 1989, secondary burnt pests (mainly beetles and beepers) were erupted on the burning ground, and both the burning firewood and the heap were severely beaten. Lin