温度对细小可燃物平衡含水率和时滞的影响  

Influence of Temperature on Equilibrium Moisture Content and Timelag of Fine Fuels

作　　者：高国平[1] 魏振宏[1] 祁金玉[1] 王月[1] 信雯[1] 张伟[1] 顾岩 

机构地区：[1]沈阳农业大学林学院,辽宁沈阳110161 [2]新民市林业局,辽宁新民110300

出　　处：《西北林学院学报》2010年第4期110-114,119,共6页Journal of Northwest Forestry University

基　　金：辽宁省林业厅科技攻关项目"辽宁省地被可燃物的研究"[辽林1994(3)]

摘　　要：采用预处理法,对棋盘山2个常见树种油松、蒙古栎林下细小可燃物的失水过程进行了研究。通过回归分析,建立了相关的模型。结果表明:在75%湿度、不同温度梯度(15、20、25、30、35℃)下,各细小可燃物的平衡含水率和时滞都不同程度受到温度的影响。表现为:平衡含水率与时滞随温度的升高而降低,温度与枯枝和树皮的平衡含水率、时滞分别为二次函数和三次函数关系;与油松落针的平衡含水率和时滞分别为三次函数和四次函数关系。Relationships between temperature and equilibrium moisture content （EMC） as well as time-lag were probed by investigating the desorption process of fine fuels of Pinus tabulaeforrnis and Quercus mongolica forests with the preprocessing method. A model was established under the support of SPSS with the temperatures ranging from 15 to 35℃ （5℃ gradient ） at the humidity of 75%. The results indicated that both the EMC and time-lag of fine fuels were influenced by temperature to some extent. EMC and time-lag fell as the temperature rised. Relationships of quadratic and cubic functions were found between temperature and EMC, temperature and time-lag of sticks and barks respectively. Cubic function and quartic functions were found between temperature and EMC, temperature and fallen needles of P. tabulaeformis.

关 键 词：温度 细小可燃物 平衡含水率 时滞 

分 类 号：S762.2[农业科学—森林保护学]