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对北京十三陵林场人工油松林和侧柏林进行踏查,并根据地型、林分因子的差异性设置21块样地,调查样地的林分、地型因子及可燃物负荷量,进行可燃物负荷量及其影响因子的相关性分析。研究结果表明:对针叶林整体而言,灌木可燃物负荷量与枝下高呈正相关,与林分密度呈负相关,草本可燃物负荷量与平均胸径、平均树高呈正相关,1h,10h时滞枯枝负荷量与郁闭度呈正相关;对油松林而言,灌木可燃物负荷量与平均胸径呈负相关,1h,10h时滞枯枝负荷量与海拔、平均树高呈正相关;对侧柏林而言,灌木可燃物负荷量与平均树高呈正相关,草本可燃物负荷量与平均胸径、平均树高呈正相关,10h时滞枯枝负荷量与郁闭度呈正相关。
Twenty-three plots were planted in the artificial forests of Pinus tabulaeformis and Platycladus orientalis in the Ming Tombs Forest Farm in Beijing, and 21 plots were set up according to the difference of the ground types and the stand factors. The forest plots, landform factors and combustible load of the plots were investigated. Correlation Analysis of Material Load and Its Influence Factors. The results showed that: for coniferous forest as a whole, shrub combustible load was positively correlated with branch height and negatively correlated with stand density. Herb fuel load was positively correlated with average DBH and average tree height. For the Pinus tabulaeformis forest, the load of shrubs was negatively correlated with the average DBH. The load of litter at 1 h and 10 h was positively correlated with the elevation and the average tree height. In the case of Platycladus orientalis, the load of shrubs was positively correlated with the mean tree height. The load of herbaceous combustibles was positively correlated with the average diameter at breast height and mean tree height. The load of dead branches at 10 hours was positively correlated with the canopy density.