华南地区3个树种的抗火性能分析

对华南地区的竹节树（Carallia brachiata）、木荷（Schima superba）和尾巨桉（Eucalyptus urophylla × E．grandis）3个树种的枝、叶的含水率、粗灰分、粗脂肪质量分数、石油醚抽提物质量分数、热值、挥发性物质6项抗火防火指标进行分析。结果表明：竹节树枝条和叶的含水率在3个树种中最高，叶片挥发物含量最少而枝条不含挥发物，叶片和枝条的粗脂肪含量和热值在3个树种中分别列最高和第二。竹节树与防火树种木荷的综合防火性能接近，远优于易燃树种尾巨桉，可作为优良的抗火树种推广应用。

Analysis of Fire-resistant Abilities of Three Tree Species in South China

The leaves and branches of Carallia brachiata,Schima superba and Eucalyptus urophylla ×E. grandis were selected as the study objects to analyzed the fire-resistance indexes of the three species,including moisture content,crude ash,crude fat content,petroleum ether extract content,calorific value and volatile material content.The results showed that the moisture content and crude fat of C.brachiata in leaves and branches were the highest and the calorific value of C.brachiata was the second highest,while among the 3 spices, C.brachiata had the lowest volatile material content in leaves and branches.The comprehensive fire-resistance abilities of C.brachiata was closed to S.superba which was fire-resistant and its fire-resistance was far superior to E.urophylla ×E.grandis.As a result,C.brachiata could be taken as one of the excellent fire-resistance tree spiecies to popularize.