林业区划在森林火险天气等级预报中的应用

Forestry Investigation Division in the Forest Fire Danger Weather Forecast Level Application

为进一步提高森林火险等级预报服务并为全国森林火险预报提供新观点,结合森林火险天气等级和林业区划调查构建了内蒙古森林火险评定方法。此方法改变了以往只以火险天气等级为森林火险依据的单一性,通过添加树种燃烧组成、农业人口密度、路网密度及防火期气象要素等,完成了气象要素与下垫面森林资源的完美结合,实现火险天气等级在林业区划上的再分配。研究结果表明,内蒙古林业区划Ⅲ级区应该在实际森林火险预报中上升1个等级,Ⅰ级区应降低1个等级,在没有森林资源分布和结合的地区应降低2个等级。

In order to further enhance the forest fire danger rating forecast and provides new ideas for national forest fire forecast, the paper combined the fire weather level and forestry investigation division constructing the Inner Mongolia forest fire danger rating. This method changed the only based on fire weather divided the forest fire danger rating in the past, add the species composition, burning agricultural population density, and road network density and fireproof period meteorological elements, etc. Completed the meteorological elements and underlying surface forest resources, completed the fire weather level in the forestry investigation division redistribution. The result indicated that in Inner Mongolia forest Ⅲ stage area the actual forest fire forecast should up a level, Ⅲ stage area should down a level. There was no forest resources distribution and combination area should down two levels.