在大兴安岭地区加格达奇、塔河、松岭林业局,对不同兴安落叶松林分类型进行调查。根据外业调查资料,结合郁闭度、年龄、坡度等因子,求出不同林分类型各种可燃物载量。结合热值,初始引燃含水率以及初始蔓延含水率、对不同兴安落叶松林分类型的燃烧性与阻火性进行研究分析,结合郁闭度,火险等级建立了兴安落叶松林分的阻火模型。研究结果表明,兴安落叶松林分具有较好阻火能力,适宜做为阻火林带。 In the Greater Xing’an Mountains, Jiagedaqi, Tahe and Songling Forestry Bureau investigated the different types of Larix gmelinii forest. According to the field survey data, combining with the factors such as canopy density, age, slope and so on, the loads of different types of combustibles were calculated. Combining the calorific value, the initial ignition water content and the initial water content, the classification and flammability of different Larix gmelinii forests were studied and analyzed. The fire resistance model of Larix gmelinii . The results showed that Larix gmelinii forest had better fire resistance ability, which was suitable as fire retardant forest belt.