中国西南地区防火树种的选择研究(英文)

筛选中国西南地区的防火树种用于营造防火林带或混交林 ,可以有效地预防大面积森林火灾的发生 .通过实验 ,比较分析了西南山区 12个树种的树叶、树枝和树皮的燃烧性 ,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 )热值、含水量、燃点和灰分含量是影响叶的抗火能力的主要指标 .木质素含量和苯 乙醇抽取物与总发热量有线性相关关系 ;(3)由多目标决策方法对 12种树的抗火性能综合排序 ,木荷、红椎、杨梅的抗火性强 ,刨花楠、水老排、火力楠、油茶和木莲的抗火性中等 ,稠木、观光木的抗火能力较弱 ,杉木、马尾松的抗火能力弱

Selection of Fire-resistant Tree Species for Southwestern China

Selection of fire resistant tree species for the southwestern China and the planting of those species can effectively prevent large area's fire damage. In this paper the components and flammability of leaves, twigs and barks of 12 tree species in the mountain area of southwestern China have been tested and analyzed in the laboratory. The test and analysis indicate the results as follows:(1) for all the tree species, the fire resistance of leaves is much weaker than that of twigs and barks, and the broad leaves are stronger than those of conifers in fire resistance. (2) Heat value, moisture, ignition point and ash content are main indexes to affect fire resistance. Heat value relates to lignose content and benzene ethanol extractive content linearly.(3) Of all the 12 tree species, Schima superba,Castanopsis hystrix, Myrica rubra have the strongest resistance to fire; Machilus pauhoi, Michelia macclurei, Mytilaria laosensis, Camellia olifera and Manglietia tenuipes are relatively strong in fire resistance, and Lithocapus thalassica, Tsoongiodendron odorum, Cunninghamia lanceolata and Pinus massoniana are weak in fire resistance.