摘要
文章通过对干旱定义和对干旱等级的划分,从持续干旱对森林可燃物、火源和林火行为等方面,综合分析了持续干旱对森林火灾的影响。结果表明,持续干旱会降低可燃物的含水率,使可燃物载量和分布发生变化,对森林可燃物有较大影响;持续干旱还会影响火源,使林火强度增大,林火蔓延速度加快,火烈度增大,提高森林火灾发生的几率和森林火灾的强度。
Based on the definition of continuous drought and drought grade, the effects of the continuous drought hazard was comprehensive analyzed. From the effects on forest fuel,fire origins and forest fire behavior and so on. The results showed that continuing drought would not only decrease moisture content of fuel, change fuel load and distribution of forest fuels,but also has a great influence on fire origins. Persistent drought will large fire intensity,will accelerate fire spreading speed,and enhance fire severity. In a word,continuous drought would add forest fire probabilities and improve fire intensity.
出处
《内蒙古林业调查设计》
2013年第5期135-138,共4页
Inner Mongolia Forestry Investigation and Design
基金
西南林业大学科技创新基金(1208)
西南林业大学科研启动金(111101)
关键词
可燃物
火源
林火行为
持续干旱
Forest fuel
fire origins
fire behavior
persistent drought
