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生产用火(包括烧荒、烧防火线、烧秸稞、烧牧场)、吸烟和迷信火是林区常见的三大火源。这些火源既广泛又复杂,具有发火率高,造成过火面积大,损失严重。据海伦县护林防火档案记载,从1956年到1985年的30年里,全县共发生39次林火,成灾16次(火灾10次,大火灾5次,特大火灾一次),过火总面积261,900亩。其中,三大火源就引起29次,占林火总次数的74.36%,成灾12次,占火灾总次数的75%。
Production of fire (including burning waste, burning fire line, burning straw, burning pastures), smoking and superstition fire is a common three forest fire source. These sources of fire are both extensive and complex, with high rates of ignition, resulting in over-burned area and serious losses. According to the Hailun County forest fire file records, from 1956 to 1985, 30 years, the county occurred a total of 39 fires forest fires, disaster 16 times (10 fires, 5 major fires, a major fire once), the total area of ?? fire 261,900 acres. Among them, the three major sources of fire caused 29 times, accounting for 74.36% of the total number of forest fires, causing 12 fires and accounting for 75% of the total number of fires.