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发生在1985年5月11日的大火,是在大兴安岭木南工区起火后持续了4天。过火面积粗算为85万亩,直接扑火费用以十万计,间接损失则无从计算。这场大火除了当时干旱、风大的高火险级条件外,另一个重要原因是多年不烧沟塘,累积了大量的可燃物,致使火势凶猛无法控制。国外七十年代就大面积推广计划烧除,逐年降低林内的可燃物积累量,有助于减少火患和损失。国内近年来在点烧防火
The fire that took place on May 11, 1985, lasted for 4 days after the fire broke out in the Moknam area in Daxinganling. Excessive area was calculated as 850,000 mu, direct fire expenses to 100,000, indirect loss is not calculated. Apart from the drought and windy high-fire-insurance conditions at that time, another important reason for this great fire was that it did not burn ditches for many years and accumulated a large amount of combustibles, resulting in a fiery and uncontrollable fire. In the 1970s, a large-scale promotion program was burned out to reduce the amount of combustible material accumulated in the forest year by year, helping to reduce the number of fire accidents and losses. In recent years at home burning fire