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利用桂西南地区不同类型马尾松和栎林的冠层可燃物、地表可燃物、立地条件和气候因子等调查数据,运用Behave Plus 5.0.5和Consume 3.0模型,分析不同林型林火行为趋势,并计算各林分过火后可燃物消耗量和含碳类气体排放量。结果表明:不同林分可燃物载量分布差异显著,马尾松纯林在风速大于15 m·s-1时,极易由地表火转化为树冠火,马尾松-红锥-潺槁树林在风速大于20 m·s-1时,极易转化为树冠火,马尾松-石栎林、石栎-马尾松林和大叶栎纯林可形成地表火,但不易发生树冠火。研究可为进一步了解森林火灾对区域气候变化的影响提供基础数据。
Based on the survey data of combustibles, surface combustibles, site conditions and climatic factors of different types of Pinus massoniana and oak forests in southwestern Guangxi Province, the Behave Plus 5.0.5 and Consume 3.0 models were used to analyze the forest fire behavior trends of different forest types, Calculate the combustible consumption and carbon-containing gas emissions of each forest after over-burning. The results showed that there was significant difference in the distribution of combustibles in different stands. Pure wind of Pinus massoniana was more than 15 m · s-1, Larger than 20 m · s-1, easily transformed into canopy fire, masson pine - Quercus forest, Quercus massoniana - Pinus massoniana and Quercus mongolica pure forest can form surface fire, but not easy to crown fire. The study can provide basic data for further understanding of the impact of forest fire on regional climate change.