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森林火灾是危害森林的一大主要自然灾害 ,实践证明采用防火林带可以有效地控制森林火灾的发生。本文对南方的木荷、火力楠、杨梅等 11种常绿阔叶树种和杉木、马尾松两种针叶树种的叶、小枝和皮的燃烧性能及其组成成分进行了测定 ,结果表明 ,( 1)各树种均以叶的抗火性能最差 ,阔叶树种比针叶树种的抗火性能强 ;( 2 )含水量、苯 -乙醇抽取物、木质素含量和灰尘分含量是影响叶的抗火能力的主要指标
Forest fires are one of the major natural disasters that endanger forests. Practice has proved that the use of fire-retardant forest belts can effectively control the occurrence of forest fires. In this paper, the burning properties and composition of leaves, twigs and barks of 11 kinds of evergreen broad-leaved species, such as Schima superba, Pyrenia nodosum and Myrica rubra in South China were measured. The results showed that: (1) The fire resistance of the leaves was the worst in all tree species, and the fire resistance of the broad-leaved trees was better than that of the coniferous species. (2) The water content, benzene-ethanol extract, lignin content and dust content were the most influential factors main indicators