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一、森林火灾发生的原因①人为因素②腐殖质着火③泥炭自燃④旱雷和闪电二、火灾发展的条件温度、湿度条件森林火灾的发生和蔓延影响很大,当气温很高时,由于蒸发加速,森林中有机物质的湿度降低,因而容易着火,当气候较为干燥时,可燃性的有机物质的水份蒸发也同样加速,使火灾发生的机率增大.风速加速林地水分的蒸发,且给燃烧点供应大量的氧以促进燃烧,微小的火源在大风的作用下,酿成难以控制的特大火灾.
First, the causes of forest fire ① human factors ② humus ignition ③ peat spontaneous combustion ④ lightning and lightning two conditions of fire development Temperature and humidity conditions The occurrence and spread of forest fire have a great impact, when the temperature is high, due to evaporation acceleration , The humidity of the organic matter in the forest is reduced, and therefore it is easy to catch fire. When the climate is dry, the evaporation of the flammable organic matter is also accelerated and the probability of the fire is increased. The wind speed accelerates the evaporation of water in the forest and gives the combustion A large supply of oxygen to promote combustion, a small source of fire in the wind under the effect of causing uncontrollable fires.