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一、前言根据森林燃烧环网的原理,在同一个大的生态系统中,森林燃烧环是可燃物类型、火环境、火源条件基本相同,火行为基本相似可燃复合体。可燃物类型是森林燃烧的物质基础,它的数量变化与森林燃烧有着密切关系,所以森林防火基本任务之一旨在调节森林可燃物的数量,而营林用火则是减少可燃物积累主要技术措施;火环境是森林燃烧的重要条件,通过物候相既可掌握什么类型可燃物可以点烧,又可选择最佳点烧条件,如草甸、林缘、林内等地段可燃物类型不同,点烧时段不同;点烧方法将直接影响用火效益,因此,只要掌握上述三种要素,就可将火行为指标控制在相应的范围内,在实际操作中,采用中低强度(300～2000千瓦/
Foreword According to the principle of forest burning ring network, in the same large ecosystem, the burning ring of forest is combustible type, the fire environment, the fire source conditions are basically the same, the fire behavior is similar to the combustible composite. The type of combustibles is the material basis of forest combustion, and its quantity change is closely related to forest combustion. Therefore, one of the basic tasks of forest fire prevention is to regulate the quantity of forest combustibles, while forest fires are the major technologies to reduce the accumulation of combustibles Measures; fire environment is an important condition for forest burning, through the phenology phase can grasp what type of combustible can be point burning, but also choose the best point burning conditions, such as meadow, forest edge, forest and other sections of combustible types of different points Burning time is different; point burning method will directly affect the use of fire benefits, so long as the above three elements, you can control the fire behavior indicators in the appropriate range, in practice, the use of low-intensity (300 ~ 2000 kW /