山沟阻火作用的初步研究  

A Preliminary Study on Fire Retardant Efficiency of Mountain Gully

作　　者：李世友[1,2] 陈宏刚 董琼[1] 舒立福[4] 王文元 马爱丽[1] 张桥蓉[1] 

机构地区：[1]西南林学院,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 [3]西南航空护林总站,云南昆明650021 [4]中国林科院森林生态环境与保护研究所,北京100091

出　　处：《江西农业大学学报》2009年第4期695-698,共4页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家科技支撑项目(2006BAD04B05);昆明市科技局重点项目(06H114135);云南省青年基金项目(2003C0021Q)

摘　　要：为研究山沟在森林消防中的作用,在安宁2006年"3.29"森林火灾火烧迹地上调查部分山沟内可燃物特点,绘制79条较长山沟的过火情况示意图,确定这些山沟过火和未过火分界点的海拔高度,总结山沟的阻火特性,即:(1)山沟中下部的阻火作用强于上部;(2)沟内火强度较沟外相邻林地小,火后植物恢复较其它部位快;(3)火蔓延到郁闭的阔叶林沟中自然熄灭;(4)阴坡山沟的阻火作用强于阳坡山沟;(5)沟内生长的常绿和早春发芽的植物具有阻火作用;(6)山沟能阻隔地表火和高强度树冠火。在此基础上提出将山沟应用于森林消防的6项建议。In order to determine the function of mountain gullies in forest fire fighting, fuel characteristics in part mountain gullies were investigated in the burned area of ＂3 · 29＂ Forest Fire in Anning area in 2006, sketch map of burned status of 79 main gullies was drawn, and the dividing line heights above sea level of the burned and the unburned were determined. The fire retardant characteristics of mountain gullies were summarized, that were ： （ 1 ） The fire retardant efficiency of the middle and lower parts of gullies was higher than that of the upper part; （2） The fire intensity of inside gullies was smaller than that on the outside and the burned plants recovered quicker; （3）The fire quenched spontaneously in the crown covered broad -leaved forest; （4） The fire retardant efficiency of the shady slope was higher than that of the sunny slope ; （5） Evergreen and early -spring germinating plants had fire retardant efficiency; （6）Mountain gullies might retard surface fire and high intensity crown fire. 6 suggestions of application of gully in forest fire fighting are put forward.

关 键 词：山沟 阻火作用 森林消防 

分 类 号：S762.33[农业科学—森林保护学]