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当前位置: 首页 > 文章 > 基于Rothermel的南亚热带马尾松人工林潜在火行为研究 中南林业科技大学学报 2017 (6) 14-23
Position: Home > Articles > Research on masson pine potential fire behavior in southern subtropical based on Behave Plus Journal of Central South University of Forestry & Technology 2017 (6) 14-23

基于Rothermel的南亚热带马尾松人工林潜在火行为研究

作  者：
潘登;张合平;潘高;易浪
单  位：
中南林业科技大学;南方林业生态技术国家工程实验室
关键词：
Rothermel模型;可燃物载量;火行为;可燃物调控
摘  要：
马尾松Pinus massoniana是我国南方大面积的主要造林树种,耐贫瘠,生长迅速,但抗火能力弱,发生火灾后极易造成重大损失。本研究基于广义Rothermel模型,对不同林龄马尾松人工林在不同风速下点燃概率和火类型进行了评估,模拟了火线强度,地表火、树冠火蔓延速度、火焰高度,树冠火的发生率和转化率等参数;并与室内点烧试验观测结果进行了比较。结果表明:广义Rothermel模型对于林火蔓延速度的拟合对最好,对于火线强度的模拟值偏高,而对于火焰高度的模拟值随林龄增大逐渐降低;20 a马尾松林地表火的蔓延速度和火线强度均最高,且发生树冠火的概率也最大;10 a和20 a马尾松林树冠火转化率较高,50 a马尾松林的各项火行为参数均较低。可燃物床含水量对于地表火行为影响较大,而冠基高和林下灌木生长情况对于树冠火的发生起决定性作用,尤其在干旱季节,需要周期性地清除林下灌木和地表可燃物,减少可燃物床载量,另外,在对不同林龄马尾松人工林进行林火管理时,可针对不同林分的火行为参数有区别地采取不同的经营措施。
译  名：
Research on masson pine potential fire behavior in southern subtropical based on Behave Plus
作  者：
PAN Deng;ZHANG Heping;PAN Gao;YI Lang;Central South University of Forestry and Technology;National Engineering Laboratory for Applied Forest Ecological Technology in Southern China;
关键词：
Rothermel model;;fuel load;;fire behavior;;fuel management
摘  要：
Masson Pine is characterized by barren tolerance and rapid growth, and it is the main afforestation tree in south China, But its ability to resist fire is weak, in case of fire, it is very apt to causes severe personnel casualty and property losses. This research predicted different ages of Masson Pine forest firebrand ignition and fire type under different wind speeds, calculated fireline intensity; surface fire and crown fire's spread speed and length; crown fire transition ratio and active ratio, based on Rothermel model. The predicted results were compared with those measured by laboratory burning experiment to test the performance of the model. The results showed that extended Rothermel model has best equation in rate of spread, the predicted values of fireline intensity were higher than observed ones, and the predicted values of fire length were decreased with the increase of forest age; 20 a Masson Pine plantation has highest surface fire spread speed and fireline intensity, and its active ratio is higher than other forest type; 10 a and 20 a Masson Pine plantation's transition ratio is higher than average value, all of 50 a Masson Pine plantation's parameters are lower than other forest type. Fuel bed moisture content has a greater influence on surface fire behavior, crown base height and understory shrubs growth is crucial for crown fire, Especially in the dry season, periodically remove understory shrubs and surface fuel is necessary, In addition, different management measures is needed in the different forest age of Masson pine plantation forest fire management.

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