14种常绿木本植物活枝叶在防火期的易燃性比较  

Inflammability of living branches and leaves of 14 evergreen woody species during forost fireproof period.

作　　者：李世友[1,2] 马爱丽[1] 王少名[1] 张桥蓉[1] 刘文胜[1] 马长乐[1] 

机构地区：[1]西南林学院保护生物学学院,昆明650224 [2]云南省高校森林灾害预警与控制重点实验室,昆明650224

出　　处：《生态学杂志》2009年第4期601-606,共6页Chinese Journal of Ecology

基　　金：昆明市科技局重点项目(06H114135);云南省青年基金项目(2003C0021Q);国家科技支撑项目(2006BAD04B05);国家重点基础研究发展规划资助项目(2003CB415102)

摘　　要：为综合比较植物的易燃性,用自行设计的试验装置对元江栲(Castanopsis orthacan-tha)等14种昆明地区主要常绿木本植物的活枝叶进行了9次燃烧试验。在测定和分析样品含水率、引燃时间、有焰燃烧时间、试验过程中烟气温度和质量变化等基础上,提出了易燃性参数,即单位质量可燃物在有焰燃烧阶段相对于无样品对照试验的烟气净积温与引燃时间之比。根据该参数计算了14种植物9次燃烧试验的易燃性参数,并对树种进行了易燃性综合排序,即炮仗花杜鹃>元江栲>光叶石栎>云南含笑>滇青冈>云南野山茶>小白花杜鹃>矮杨梅>米饭花>云南樟>厚皮香>大白花杜鹃>岗柃>野八角,分析了造成不同种植物活枝叶易燃性差异的原因。To comprehensively compare the inflammability of plants, a combustion experiment with living branches and leaves of 14 main evergreen woody plant species in Kunming was conducted 9 times during forest fireproof period by using the equipment designed by the authors. Based on the determinations of samples＇ moisture content, igniting time, flaming combustion time, smoke temperature, and weight loss, a characteristic parameter of inflammability, the ratio of net accumulated smoke temperature during experimental period to igniting time of per unit mass fuel in comparison to no-sample control was put forward. According to the calculations of this parameter, the inflammability of test plant species was in the order of Rhododendron spinuliferum 〉 Castanopsis orthacantha 〉 Lithocarpus mairei 〉 Michelia yunnanensis 〉 Cyclobalanopsis glaucoides 〉 Camellia pitardii 〉 Rhododendron siderophyllum 〉 Myrica nana 〉 Vacinium sprengelii 〉 Cinnamomum glanduliferum 〉 Ternstroemia gymnanthera 〉 Rhododendron decorum 〉 Eurya groffii 〉 lllicium simonsii. The causes inducing the inflammability difference of the 14 woody plant species were analyzed.

关 键 词：常绿木本植物 活枝叶 易燃性参数 防火期 

分 类 号：S762[农业科学—森林保护学]