大兴安岭主要树种死可燃物含水率的实验分析

Experimental Analysis of Dead Fuel Moisture of Principal Species in Daxing'an Mountain

对大兴安岭16种乔木和灌木凋落的树叶、小枝和树皮含水率进行实验分析,结果表明:凋落的树叶、小枝和树皮的风干含水率差别不大,凋落的树叶与小枝的绝干含水率差异也不显著,但树皮与树叶和小枝的绝干含水率有显著差异;凋落的树叶、小枝和树皮风干含水率和绝干含水率无显著相关,这说明在分析抗火性时风干含水率和绝干含水率都要考虑进去;所选的16种树种的风干含水率和绝干含水率不存在差异,因此,在分析树种之间凋落的树叶、小枝和树皮抗火性差别时可以不考虑风干含水率和绝干含水率.

The experimental analysis of moisture content of deciduous leaves ,twigs and bark of 16 species of tree and shrub in Daxing＇ an Mountain has been conducted. The results indicate that the air dry moisture content of deciduous leaves, twigs and bark is not very different, the absolute dry moisture content of deciduous leaves and twigs are not significant, but the absolute dry moisture content of bark with leaves and twigs is not significantly differences;there is no significant correlation between the air dry moisture content and the absolute dry moisture content of deciduous leaves, twigs and bark, indicating that air dry moisture content and absolute dry moisture content should be taken into account in analysis of fire resistance;there is no difference in the air dry moisture content and the absolute dry moisture content of selected 16 species, so air dry moisture content and absolute dry moisture content can be neglected in analyzing fire resistance of deciduous leaves, twigs and bark between the species.