Annually forest fires range from 52 to 240. The incidence rate of forest fires in northwest region is under 0. 033 per thousand hectares. There are 0. 067 ha-6. 44 ha burned area per thousand hectares forest.
The correlation coefficient between temperature and forest fire hazard was 0.36,when the highest temperature was -10-10℃,there had a fastigium of fire hazard .
In recent years, with the mature of artificial intelligence, simulation, virtual reality technology, the information technology has applied in various facet such as forest firing monitoring ,forest firing information manager, forecast of forest fire hazard, etc. At the same time, the informatization and automatization of forest firing prevention direct, which has attract peoples' great attention, become one of the keystone of fire prevention.
On the basis of the analysis on the climate feature, wood's variety, wood's fuel characteristics for the tropic in China, and the pyrolysis experiment on some tropical wood's leaves and branches, the grade of forest fire hazard zoning and the velocity of forest fire spread in south China were calculated, and the characteristics of tropical forest fire's emergence were discussed as well.
Treating forest fire disasters as a risk management issue promotes important measures and methods for fire fighters to prevent, reduce and control the risks of forest fires.
Historical forest fire records from Alaska State (1950-2000), California State (1895-2001), USA and Heilongjiang Province (1980-1999), China were used to calculate the longitude and latitude of the annual burned area's centroids for these regions.
Treating forest fire disasters as a risk management issue promotes important measures and methods for fire fighters to prevent, reduce and control the risks of forest fires.
Fluctuation of the burned area's centroids in Alaska State and California State in latitude does not have periodicity, and big forest fires with low frequencies predominate.