森林火灾,依据火的燃烧状态及所处部位,分为以下四种。 1.地表火 在森林火灾中发生最多的,是覆盖在林地和原野地表的杂草,低木、落叶、枯枝等。特别是当地表可燃物多的时候,会由此而引起树冠火,树干火烧毁大量的林木。当地被物少而火势也比较弱的情况下,树木因受火害 Forest fires are divided into the following four types depending on the state of fire and the location of the fire. 1. Surface fires The most common occurrences in forest fires are weeds that cover the land and wilderness, low-wood, fallen leaves, and dead branches. In particular, when there are many combustible materials on the local surface, it will cause a crown fire and the trunk fire will destroy a large amount of forest trees. In the case where the local area is small and the fire is weak, the trees are affected by fire.