一、引言长白山地区包括延边、浑江、通化地区的全部和吉林地区的蛟河、桦甸、磐石等地。这里蕴藏着丰富的森林资源和其它资源。火灾是森林的大敌。为了有效地保护森林生态环境,减少或避免森林火灾对森林的危害,进一步摸清该地区春季4——5月, I. Introduction The Changbai Mountain area includes all of the Yanbian, Hunjiang and Tonghua areas and Jiaohe, Huadian, and Rock in the Jilin area. There is abundant forest resources and other resources. Fire is the enemy of the forest. In order to effectively protect the ecological environment of forests and reduce or avoid the harm of forest fires to the forests, we can further find out the spring 4-5 months in the area,