37种针阔树种抗火性及其综合评价的研究

Study on the Fire-Resistance of 37 Species of Coniferous and Broadleaf Trees and It’s Appraisal

本文对福建３７种针阔树种鲜叶含水率、粗脂肪、粗灰分、ＳｉＯ＿２、挥发油含量和燃烧热值、燃点、燃烧速度等１０个因子进行测试，并应用Ａ、Ｉ、Ｄ方法将３７个树种依因子的不同取值范围划分为６个抗火性能等级。其中棕榈，火力构等４个树种为一技，抗火性能最强；毛栲、木荷等９个树种为二级，抗火性强；格氏栲、丝栗栲等１５个树种为三级；抗火性能最差的六级是马尾松、侧柏等３个树种。本研究探讨了南方主要针阔树种抗火性规律，为建立防火林带树种选择提供了理论依据。

Through the measure of moisture content,crude fat crude ash, sillica,volaule oil, burningpoint,combustion heat’ burning speed,etc. , of the leaf and methed of A、I、D. , 37 species ofconiferous and broadleaf tress are divided into six grades according to their fire-resistance proper-ty, The four species including Trachycarpus fortunei,Michelia macclurei var, Sablbnea ete, arein the first grade, their fire-resistance property are the best. The nine species belong in the second grade. Pinus massoniana. Platycladus orienrtalis and Cryptomeria fortunel belong in the sixth grade their fire-resistance property are the worgt, The results as above finally indicate the fire-re-sistance regulation of the main coniferous and broadleaf trees in south China and provltie the theo-retical evidence for the selection of fire-prevention tree species.