北京地区5个针叶树种抗火性研究

摘 要：冬春季节，是北京地区森林火灾的高发期。为了选取合适营造生物防火林带的树种，阻止森林火灾蔓延，减少森林火灾带来的损失，对北京地区5个常见针叶树种抗火性进行了研究。分别测定了不同针叶树种树皮和树叶的含水率、树皮厚度、树叶表面积与体积比、树叶燃点、树叶热值和树叶粗灰分含量等指标，利用因子分析法对树种的抗火性能进行综合评价和排序，通过对不同树种的7个抗火性单变量进行因子分析，得出5个树种抗火性能的综合排序为:刺柏＞白皮松＞油松＞圆柏＞侧柏。

Research on fire resistance of 5 conifer species in Beijing area

Winter and spring season is the peak period of forest fire in Beijing. In order to select appropriate tree species to build biological fire prevention forest, prevent forest fire spreading, reduce the loss of forest fire, fire resistance of five common conifer in Beijing was studied. The moisture content, bark thickness, ratio of leaf surface area to volume, leaf burning point, leaf calorific value and leaf coarse ash content of the barks and leaves of different coniferous trees were measured. Factor analysis was used to comprehensively evaluate and sort the fire resistance of the tree species. Through the analysis of 7 fire resistance univariate factors of different tree species, the comprehensive order of fire resistance of 5 tree species is: Juniperus Formosana Hayata＞Pinus Bungeana Zucc＞Pinus TabuliformisCarr＞Juniperus Chinensis Linnaeus＞Platycladus Orientalis(L.) Franco.