STUDYING ON NETWORK OF FOREST BURNING LINKS
Zheng Huanneng Hu Haiqing(Northeast Forestry University) Wang Dexiang(Northwest Forestry College)
Based on the research of the Forest Burning Links published in thc Journal of Northeast Forestry University in 1987, this paper continues to study thc theory of forest burning. Fire behaviour has been divided into two important parts in this paper. One is the combustibility and fire spread, and the other is the fire intensity. The combustibility and fire spread have been divided into three grades as the following: A: to burn difficultly and spread slowly; B: to burn possibly and burn in middle degree; C: to burn easily and spread fast. The burning degrees of fire have been divided into four as the following: Ⅰ: light burning; Ⅱ: medium burning; Ⅲ: intense burning; Ⅳ: severe burning. The part of combustibility and fire spread can be put as ordinate and the post of fire intensity can be put as abscissa. Then the network of forest burning links has been formed by twelvc forest burning links. In the network, the relationship, the law of distribution and the variation of different forest burning links can be shown clearly. The studies of the distribution and effect of fuel types, topography, site and fire kinds in the network can provide the basic theory for fire management.