森林火险等级分布模拟——中小尺度动力学模式

Simulation of forest fire grade distribution by using three dimensional air-soil coupling model

通过在地形坐标系中建立考虑森林植被影响的三维大气-土壤耦合动力学模式,对神农架林区历史上几次重大森林火灾发生期的气象要素场进行了模拟,并在此基础上计算神农架林区高分辨率的森林火险等级分布状态,揭示了林火发生的一些重要规律。

A three dimensional quasistatic equilibrium airsoil coupling model in topographic coordinates system including climate effect of vegetation cover was established to simulate meteorological elements distribution for some serious forest fires in the Shengnongjia forest area. The highresolution fields of the forest fire hazard grade were estimated based on the model results .The results revealed several important regularities of the forest fire occurrence.