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森林火灾的危害是重严的,它不仅烧毁林木,降低木材资源的数量和质量,造成动植物的大量死亡,破坏生态平衡,同时还由于太阳对裸露土地的辐射,使林区局部温差增大,水分蒸发增加,温度降低,无霜期变短,导致森林小气候的改变。森林火灾发生的次数和危害程度,以春季最多,最严重,秋季次之。有人对我区历年火灾发生的情况进行粗略统计,发现春季发生的火灾约占全年火灾次数的78％,秋季占22％,每个火灾危险季节又可分为三个阶段:春季三月上旬至四月上旬为火险初期,四月中旬至五月中旬为火险盛期,五月
Forest fire hazards are severe, it not only burned trees, reduce the quantity and quality of wood resources, causing a large number of animal and plant deaths, undermining the ecological balance, but also due to the sun’s exposure to exposed land, so that the temperature difference between the local forest increased , Water evaporation increases, the temperature decreases, frost-free period becomes shorter, resulting in the change of forest microclimate. The number of forest fires and the degree of harm to spring the most, the worst, followed by the fall. Some people made a rough statistics on the occurrence of fires in our area over the years and found that in spring, fires accounted for about 78% of the annual number of fires and 22% in autumn. Each fire danger season can be divided into three phases: spring early March Early April to early fire, mid-April to mid-May for the peak of fire, in May