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立地条件、天气和可燃物决定了森林火灾的强度与烈度,三大因素中,只有对可燃物能进行有效的经营管理。研究表明:1)过去60~100年,由于森林结构和组成的改变,可燃物载量增加,易发生高强度的森林火灾。2)林火模型、实践经验以及现场观察表明,在特定的天气条件下,林火行为受可燃物结构与组成的影响很大。3)减少重特大森林火灾的发生就必须降低地表可燃物的数量、密度、连续性,移除过度可燃物,或改造植被,降低森林植被的燃烧性等。4)可燃物处理有效期评估涉及林火蔓延、林火强度、烈度、火场规模和扑火能力的研究,景观尺度手段优于林分尺度。
Site conditions, the weather and combustibles determine the intensity and intensity of forest fires, only three of the three factors, the effective management of combustibles. The research shows that: 1) Over the past 60-100 years, due to the change of forest structure and composition, the load of combustible material increases, and high-intensity forest fire easily occurs. 2) The forest fire model, practical experience and field observations show that under certain weather conditions, forest fire behavior is strongly influenced by the structure and composition of combustibles. 3) To reduce the occurrence of heavy forest fires, it is necessary to reduce the quantity, density and continuity of surface combustibles, remove excessive combustibles, rebuild vegetation and reduce the combustibility of forest vegetation. 4) The assessment of the expiration date of combustibles treatment involves the study of the spread of forest fires, the intensity of fires, intensity of fires, the size of fireplaces and the ability to extinguish fires. The means of landscape scales are superior to the stand scales.