2.4 Forest Fire Model 

An equivalent model of "Go-game model", as a kind of "Percolation" 
All grids are served 1 or 0 randomly with a probability p.p(=0.58) at start.
"1" means the site is occupied by a tree and "0" is not.
The fire expands to all tree sites calculations sites number.      

Fig.5 Green:tree   Blue:soil   Red:fire  
This is a famous example of percolation (Stauffer et al.,1992)