辽宁省3种针叶可燃物含水率变化规律的研究  

Study on the variation of water content of three coniferous fuels in Liaoning Province

作　　者：云丽丽[1,2] 王睿照 王建军[1,2] 张慧东 杨琛琛[3] Yun Lili;WANG Ruizhao;WANG Jianjun;ZHANG Huidong;YANG Chenchen(Liaoning Academy of Forestry,Shenyang 110032,China;Liaoning Binglashan Forest Ecosystem National Research Station,Tieling 112404,China;Dalinghe State Forest Farm,Linghai 121200,China)

机构地区：[1]辽宁省林业科学研究院,辽宁沈阳110032 [2]辽宁冰砬山森林生态系统国家定位观测研究站,辽宁铁岭112404 [3]凌海市国有大凌河林场,辽宁凌海121200

出　　处：《辽宁林业科技》2023年第1期1-5,共5页Liaoning Forestry Science and Technology

基　　金：辽宁省“百千万人才工程”项目(2019921096);辽宁省科学事业公益研究基金项目(GY2015-E-011);辽宁省农业科学院基本科研业务费计划项目(2021HQ1910)。

摘　　要：可燃物含水率影响着森林火灾的发生与发展,是火险预测和预报的重要指标。为制定森林火灾精准防控方案,掌握其可燃物含水率变化规律,该文以辽宁省3种针叶为研究对象,测定了相同气温、不同空气相对湿度条件下可燃物的平衡含水率和时滞,开展生长季3种针叶含水率变化规律的研究。通过统计软件建立了可燃物含水率变化幂函数方程、时滞-空气湿度对数函数方程,同时测定了防火期3种可燃物的含水率。结果表明:3种可燃物平衡含水率、时滞分别与空气湿度呈显著正相关(R^(2)=0.94~0.988、R^(2)=0.90~0.98),3种可燃物的含水率随空气湿度的增加而增加,含水率下降速度随空气湿度增加而降低,其中樟子松针叶含水率下降速度最慢,时滞最大;3种可燃物生长季含水率最低值均出现在5月,为相应地区林火发生高危期。The water content of needles of three main coniferous forests in Liaoning Province was determined under the same temperature and different relative humidity of air for studying the variation of water content of different fuel types.The power function equation of water content variation of fuels and the logarithmic function equation of air humidity time lag were established,the water content of three fuels in fire protection period was measured as well.The results showed that the equilibrium water content and time lag of the three fuels had significantly positive correlation with air humidity,respectively(R^(2)=0.94~0.988,R^(2)=0.90~0.98).The water content of the three fuels increased with the increase of air humidity,and the decreasing rate of water content decreased with the increase of air humidity,and the water content of Pinus sylvestris var.mongolica needles decreased at the slowest rate and its time lag was the largest.The lowest water content of the three fuels occurred in May,which was the high-risk period of forest fire occurrence in this area.

关 键 词：针叶 可燃物含水率 时滞 变化规律 

分 类 号：S762[农业科学—森林保护学] S791[农业科学—林学]