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地表枯死可燃物负荷量多少是森林火灾发生的基础。调查八达岭林场不同地形条件下油松林地表枯死可燃物和林分因子,取得42块样地资料;用线性相关分析法对各因子与地表枯死可燃物负荷量进行分析,平均树高、坡度和海拔与对应负荷量有显著线性关系;应用多元线性回归中的逐步回归剔除法,建立了估测模型,除平均胸径外,平均树高、密度、郁闭度、海拔、坡度被引入,经检验回归显著,该估测模型可用于其它油松林地表可燃物负荷量估测。
Surface dead combustible load how much is the basis of the forest fire. The data of 42 plots were obtained from the ground-dead combustibles and stand factors of Pinus tabulaeformis forest under different landform conditions in Badaling Forest Farm. The linear correlation analysis was used to analyze the load of combustible materials and dead weight of each surface. The average tree height, slope and elevation And the corresponding load has a significant linear relationship; the application of multivariate linear regression stepwise regression culling method to establish an estimation model, in addition to the average diameter at breast height, the average height, density, canopy density, elevation, slope is introduced, the test regression Significantly, this estimation model can be used to estimate the combustible load on other Pinus tabulaeformis surfaces.