滇中安宁“3·29”重大森林火灾火烧迹地灌木林的燃烧性研究  

Retrogressive study and analysis of the burning features of the shrubs in the fire taking place on 29 March,2006,in Anning,Yunnan

作　　者：王秋华[1] 肖慧娟[2] 徐盛基[3] 李世友[1] 施绍军[1] 娄孝林 刘博[1] 

机构地区：[1]西南林业大学土木工程学院云南省森林灾害预警与控制重点实验室,昆明650224 [2]西南林业大学林学院,昆明650224 [3]国家林业局南方航空护林总站,昆明650021

出　　处：《安全与环境学报》2016年第1期138-141,共4页Journal of Safety and Environment

基　　金：云南省应用基础研究计划项目(2011FZ136);云南省教育厅科研项目(2011Y279)

摘　　要：在滇中安宁2006年"3·29"重大森林火灾火烧迹地里没有人为干扰的火烧后光叶石栎灌木林设置样地,并在距离火烧迹地1km处未过火灌木林设置样地做对照,通过外业调查可燃物类型、高度和载量等并在实验室测定活灌木、死可燃物和CWD的热值、灰分质量分数和点着温度,以单位面积热量为关键指标,对比研究了火烧迹地和未过火灌木林的燃烧性。结果表明,研究样地中火烧迹地光叶石栎灌木林里死可燃物、活可燃物、CWD及总的单位面积热量分别为98 512.51 k J/m2、33 744.36 k J/m2、55 091.52 k J/m2和187 348.39k J/m2,达到较高的值,火烧迹地灌木林总的单位面积热量超过未过火对比灌木林168 944.83 k J/m2;火烧迹地光叶石栎灌木林仍然具有很强的燃烧性,一旦着火,很可能继续释放出大量的热,仍然有可能发展成重大森林火灾,将会对生态环境造成更大的破坏。The present article is aimed at introducing a comparative and contrastive study through the field investigation and the lab exper- iment by taking the actual fire disaster that occurred in Anning, the central region of unnan on 29 March, 2006, as a case study sam- pie. For the research purpose, we have collected and analyzed the statistical data of the two groups of the sample concerning the fuel loads, the thermous load, the ash content, the ignition temperature and the full burning flaming temperature of the shrubs of Lithocarpus mairei （Schottky） Rehde, which were described as a fire-prone bio- community, and the intensive propagation of the forest fires that ex- panded vastly in the central regions of the province. For our research need, we have made a detailed exploration of the fire-slash lithocar- pus mairei （Schottky） Rehde in the shrub field of the Anning forest fire disaster, which happened to be away from any human-activity in- terference. The shrub samples we have collected from the original fire sites one kilometer around as samples in our contrast group. With the index of the thrmous temperature per area in the forest as the chief standard for comparing and describing the combustibility of the two groups, the statistic results we have found can be shown as follows： the heat per area of the dead fuels, the live shrubs, CWD and the to- tal fuels turn to be 98 512.51 kJ/m2, 33 744.36 kJ/m2, 55 091.52 kJ/m2, and 187 348.39 kJ/m2, respectively, which implies that the burned shrub fields remain heavily potential with the violent com- bustibility. Once any fire spark hits them, the shrubs are likely to turn into flames to release large amounts of heat and lead to another large-scale forest fire disaster and bring about great damage to the e- cological environment. Thus, the originality of this research should be regarded as a bare-fact proof for the combustibility of Lithocarpus mairei （Schottky） Rehde shrubs in the forest fire fields, and, there- fore, the retrogressive research results let

关 键 词：安全科学技术其他学科 载量 热值 单位面积热量 重大森林火灾 火烧迹地 安宁 

分 类 号：X43[环境科学与工程—灾害防治] S762.3[农业科学—森林保护学]