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在大兴安岭火烧迹地上云杉小黑天牛Monochamus sutor L.、落叶松八齿小蠹Ips subelongatus Motsch为优势种的蛀干害虫,在火灾后第1—2年猖獗发生,其种群数量在火灾后第2—3年因寄主食物的明显减少和天敌种群数量的急剧增加而呈下降趋势。
Monochamus sutor L., the larch spruce Ips subelongatus Motsch, is the predominant species of pest-boring pests that have been rampant in the first 1-2 years after the fire, In 2-3 years, there was a downward trend due to the significant decrease of host food and the rapid increase of natural enemy population.