风对红松林地表火强度的影响
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摘要
以红松人工林的针叶为材料,在实验室内,根据之前平地无风研究的试验设计,构建不同载量、高度和含水率的可燃物床层。在各层级风速条件下,共进行100次平地点烧试验。结果表明,风速在0.9~4.6 m/s时,红松针叶床层的火强度风因子为1.769~6.708。床层压缩比、含水率对预测结果影响显著,床层载量与床层高度对预测结果影响不大。
Fuel beds composed of Korean pine needles collected from Korean pine plantations were constructed with varied fuel loading,depth and fuel moisture. Totally 100 experimental fires with these fuel beds were burned inside laboratory when wind speed is in 0. 9-4. 6 m/s. Under this range of wind speed,the wind factor of fire intensity is in 1. 769-6. 708. The results indicated that packing ratio and fuel moisture significantly influence wind factor. The effect of fuel loading and fuelbed depth on wind factor was not significant.
Fuel beds composed of Korean pine needles collected from Korean pine plantations were constructed with varied fuel loading,depth and fuel moisture. Totally 100 experimental fires with these fuel beds were burned inside laboratory when wind speed is in 0. 9-4. 6 m/s. Under this range of wind speed,the wind factor of fire intensity is in 1. 769-6. 708. The results indicated that packing ratio and fuel moisture significantly influence wind factor. The effect of fuel loading and fuelbed depth on wind factor was not significant.
引文
[1]刘礡霏.平地无风条件下红松针叶床层的火行为研究[D].哈尔滨:东北林业大学,2011.
[2]崔文彬,乔启宇,牛树奎,等.地表火燃烧参数及其火头前影响区的实验研究[J].北京林业大学学报,1998,20(5):22-27.
[3]BYRAM G M.Scaling laws for modeling mass firesp[J].Pyrodynamics,1966,4:271-284.
[4]叶红卫,朱蓝辉.应用SPSS进行双因子方差分析[J].河北北方学院学报(自然科学版),2008,24(2):63-65.
[5]姜凌.生物统计中多重检验问题的分析研究[D].济南:山东大学,2008.
[6]ROTHERMEL R C.A mathematical model for predicting fire spread in wildland fuels[R].USDA Forest Service,Intermountain Forest and Range Experimental Station.Research Paper INT-115,1972.
[2]崔文彬,乔启宇,牛树奎,等.地表火燃烧参数及其火头前影响区的实验研究[J].北京林业大学学报,1998,20(5):22-27.
[3]BYRAM G M.Scaling laws for modeling mass firesp[J].Pyrodynamics,1966,4:271-284.
[4]叶红卫,朱蓝辉.应用SPSS进行双因子方差分析[J].河北北方学院学报(自然科学版),2008,24(2):63-65.
[5]姜凌.生物统计中多重检验问题的分析研究[D].济南:山东大学,2008.
[6]ROTHERMEL R C.A mathematical model for predicting fire spread in wildland fuels[R].USDA Forest Service,Intermountain Forest and Range Experimental Station.Research Paper INT-115,1972.