The resultsshowed that the quantity and energy of the dangerous combustible materialssuch as surface litter grass,bush,needle,twig will as diameter less than 1cm,dry branch are the most important basis for dividing the combustibility offorests.

• 指出易燃危险可燃物(表层枯枝落叶层,易燃杂草、灌木、针叶、基径小于1厘米的小枝、枯枝)的数量和能量是划分森林燃烧性的重要根据。