以帽儿山实验林场的森林凋落物为燃烧材料，在自行设计的实验装置中，进行阴燃实验，记录阴燃过程的温度变化，分析凋落物的阴燃特性以及含水率、松散程度、空气流速对阴燃传播过程的影响，用气相色谱仪来检测阴燃过程中的气体组成。实验结果表明：阴燃的主要挥发气体为CO、 CO2。阴燃的传播速度随着空气流速、凋落物松散程度增大而加快，随着凋落物的含水率增加而减慢。该种凋落物具有比较容易引燃、燃烧时间长，蔓延速度较慢、高温维持时间较长的特点。%Taking forest litter of Maoer Mountain as the burning material, the combustion smoldering experiment was conducted based on a designed test equipment, and relevant data and process such as temperature change, moisture content, loose degree of forest litter and air velocity in the smoldering process were recorded and ana-lyzed, the gas composition during smoldering combustion was also detected by gas chromatograph. The result showed that the main evaporate gas of smoldering combustion were CO and CO2 . The speed of smoldering propaga-tion was accelerated with increasing of air velocity and loose degree of litter, while the speed slowed down with in-creasing of moisture content. In terms of smoldering combustion, forest litter was easy to ignite with long burning time, its spreading speed was slowly, and its high temperature could last for a long period.
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