森林火蔓延方式与火强度及自然风场的关系

本文根据国内外森林试验火场和实际火场的观测资料及已有的研究成果，进一步分析讨论了不同强度的森林火的划分及其垂直空间尺度，以及森林火蔓延的方式、方向和速度与森林火强度及自然风场的关系。首先，讨论了不同强度的森林火在自然风场作用影响下的蔓延方式，方向和速度；其次，讨论了不同强度的森林火在自然风场作用影响下的连续蔓延和不连续蔓延的条件和机理。

Relations Among Rorest Fire Spread Way,Intensity and Natural Wind Field

In this article,according to observing material of forest experimental fire field,of actual fire field,and available research achievements at home and abroad,we futher anaylyse and discuess the classifications of different forest fire intensity,vertical space scale and relations a mong way,direction and rate of forest fire spread,forest fire intensity and naturl sind field. In the first place,we discuss spread way,direction and rate of different forest fire intensity which was affected by natural wind field;in the end,we also discuss the condition and mechanism about the continuous spread and surmount spread of different forest fire intensity (leaping fire spread and flying fire spread)which was affected by natural wind field.