5种林型地表细小可燃物组成对平衡含水率和时滞的影响  

Fine Fuels,Equilibrium Moisture Content,and Time-lag of Several Forest Types

作　　者：韩岳宏 王月[1] 高国平[1] Han Yuehong;Wang Yue;Gao Guoping(Shengyang Agricultural University,Shenyang 110866,P.R.China)

机构地区：[1]沈阳农业大学,沈阳110866

出　　处：《东北林业大学学报》2018年第11期62-65,共4页Journal of Northeast Forestry University

基　　金：辽宁省科学事业公益研究基金项目(GY2015-E-011)

摘　　要：采用抽样调查法和室内测定法,研究分析了5个不同林型的地表细小可燃物的种类组成和径级分布对平衡含水率及时滞的影响。结果表明:树枝的比例与细小可燃物的平衡含水率和时滞成正比,树叶的面积、自身性质也对平衡含水率和时滞有较大影响,树叶面积越大,细小可燃物的含水率和时滞越小,树叶的吸水性越差,细小可燃物的平衡含水率和时滞越小。0.2 cm≤d<0.4 cm径级内可燃物比例与平衡含水率和时滞成正比,0.4 cm≤d<0.6 cm径级内可燃物比例对平衡含水率和时滞的影响都比较小。The sampling survey and indoor measurement methods were used to study the effect of the specific composition and diameter distribution of the small combustible material in five different forest types on the equilibrium moisture content and the time-lag.The proportion of the branches was directly proportional to the equilibrium moisture content and the time-lag of the small combustible material.The area and property of leaves also had a great influence on the equilibrium moisture content and time-lag,and the larger the leaf area,the lower the equilibrium moisture content and the time-lag of the small combustible material.The ratio of combustible material in the 0.2-0.4 cm diameter was directly proportional to the equilibrium moisture content and the time-lag.The influence of combustible material in 0.4-0.6 cm on the equilibrium moisture content and time-lag was relatively small.

关 键 词：细小可燃物 平衡含水率 时滞 径级 

分 类 号：S762.3[农业科学—森林保护学]