华山松林细小可燃物层燃烧初始蔓延速度的初步研究  

Preliminary Study on Initial Burning Spread Speed of Fine Combustible Layer in Pinus armandis Forest

作　　者：李世友[1,2] 张凯[1] 杨清[1] 马爱丽[1] 张桥蓉[1] 刘会龙[1] 

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

出　　处：《福建林业科技》2009年第1期58-61,共4页Journal of Fujian Forestry Science and Technology

基　　金：昆明市科技局重点项目(06H114135);云南省青年基金项目(2003C0021Q)资助项目

摘　　要：用自行设计的燃烧床研究了华山松林细小可燃物含水率、载量对燃烧初始蔓延速度的影响,通过分析试验过程中各测点的温度变化曲线,提出了可燃物层燃烧的初始蔓延速度的计算方法,即试验台水平方向上两热电偶的距离除以两热电偶测定到最高温的时间差;华山松林细小可燃物层燃烧的初始蔓延速度随可燃物含水率的增加而下降,载量是影响华山松林细小可燃物燃烧初始蔓延速度的一个重要因素,含水率为5.68%的华山松林细小可燃物的平均初始蔓延速度为0.0227m.s-1,该速度接近华山松林细小可燃物层在森林防火期燃烧的最大初始蔓延速度。The effects of moisture content and loads of fine combustible layer in Pinus arrnandis forest on initial burning spread speed were studied by combustion bed designed by ourselves, The calculation method of initial burning spread speed, namely the distance between two thermocouples divided time interval of highest. The initial burning spread speed of fine combustible layer in P,armandis forest decreased with moisture content increasing, the load was important factor for affecting the initial burning spread speed, and the average initial fire spread speed of fine combustible with 5.68 % of water was 0. 0227m/s, which was near the maximum initial burning speed of fine combustible of P. armandis forest in forest firet）roofing season.

关 键 词：华山松 细小可燃物 燃烧试验 初始蔓延速度 

分 类 号：S762[农业科学—森林保护学] S791.241[农业科学—林学]