森林可燃物包括木本植物和草本植物等,在化学上,都是很复杂的物质,但其主要成分是纤维素和木质素等,甚至这些主要成分的分子量还不十分了解。但在木材中的碳、氢、氧的原子比例,可近似用分子式C_6H_9O_4表示。所有森林可燃物都含有水分,在燃烧的反应式中,虽然水分不起化学变化,必定也在反应过程中起着一定作用。同样大气中的氮也一样。根据反应式含有M 百分比的木材 Forest fuel, including woody plants and herbs, are chemically very complex substances, but their main components are cellulose and lignin, and even the molecular weight of these major components is not yet fully understood. However, the carbon in wood, hydrogen, oxygen atomic ratio can be approximately expressed by the molecular formula C_6H_9O_4. All forest combustibles contain water, and in the combustion reaction, although the water does not chemically change, it must also play a role in the reaction process. The same atmosphere of nitrogen is the same. According to the reaction contains M percent of wood