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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
The screening of fire tree species in southwestern China for the purpose of creating fire forest belt or mixed forest can effectively prevent the occurrence of large-area forest fires.According to the experiment, the flammability of leaves, branches and bark of 12 tree species in southwest mountainous area is comparatively analyzed. The results showed that: (1) the resistance to fire of all species was the worst, and that of broad-leaved species was higher than that of coniferous species. (2) The calorific value, water content, ignition temperature and ash content were the main factors Index, the content of lignin and phenylethanol extract and the total calorific value have a linear relationship; (3) by multi-objective decision-making method of 12 kinds of trees fire resistance comprehensive ranking, Schima superba, Hong vertebral, red bayberry fire resistance , Wood shavings, water row, fire Nan, Camellia and Mangliese fire resistance, thick wood, sightseeing wood fire resistance is weak, fir, massoniana fire resistance is weak