A Study On Simulation Of Forest Fire Spread Based On A 3D-CA Modal

CA models have been shown to be applicable to some highly concurrent, complex dynamic systems for the purpose of their rigorous description and simulation. In this paper, a 3D cellular automata (CA) model that simulates rapid forest fire was integrated with forest map and topographic map. In the model, CA transition rules were modified in accordance with the slope, wind speed and direction, humidity and tree species. The model provided a means to simulate bushfires in different condition and predict the developing fire rapidly.Based on the modal, this paper has developed the corresponding software by Visual C++ 6 and OpenGL. The software can meet the need of the 3D-CA modal and simulate forest fire automatically. Its functions consists of reading DEM data, setting fire point, wind speed and direction and humidity, loading tree data, simulating fire spread with visibility, summing up the fired area and perimeter and calculating fire speed and so on.In this paper, the region, Ba Da Ling area in Beijing was chosen to be the test data. Combined with the local weather data and sub-compartment data, the 1:10000 DEM grid data were used to test the software's functions and effects. The results showed that we can get the rule of forest fire spread if making use of the software, which is useful for asserting fire danger and putting out fire.