人工落叶松林内死可燃物负荷量模型的研究

Load Model of Dead Fuel in Larch Plantation

将人工落叶松林内死可燃物载量作为研究对象,采用随机设置标准地的方法,调查样地海拔、坡向、坡位等立地条件指标,同时记录龄级、胸径、树高、郁闭度和灌木覆盖度等林分条件指标。对人工落叶松林内死可燃物载量与各因子进行相关性分析,根据相关性分析结果选择与死可燃物总载量相关性显著的因子进行回归分析,建立人工落叶松林内死可燃物数学模型,结果表明:选择与死可燃物总载量相关性显著的坡向X1、平均树高X2、胸径X3、年龄X4、林分密度X5等因子作为自变量进行回归分析,建立的多元线性回归模型为Y=12.889 X1+25.465X2+11.526 X5+226.991。应用此模型可对人工落叶松林内死可燃物载量进行预测,对于可燃物管理及火灾的预防具有一定的意义。

Taking the load of dead fuel in the larch plantation as the research object ,using the method of the random standard setting ,the elevation ,slope aspect ,slope position index in the sample were investigated ,and the tree age , DBH ,tree height ,canopy density ,bushes coverage of stand condition index were recorded at the same time .The cor-relation analysis between load of dead fuel in larch plantation and each factor were made .According to the results of the correlation analysis ,selecting the significant factors with the correlation of load of dead fuel to make regression a-nalysis .A mathematical model of dead fuel in larch plantation ware set .Result shows that ：slope aspect （X1 ） ,the mean tree height （X2 ） ,DBH（X3 ） ,age （X4 ） ,stand density （X5 ） and other factors which are significant with corre-lation of load of dead fuel were selected as independent variable to make regression analysis .Multiple linear regres-sion models is Y=12 .889 X1 ＋25 .465X2 ＋11 .526X5 ＋226 .991 .The model can be applied to predict the load of dead fuel in larch plantation ;it has a great significance for the prevention of fire and fuel management .