Method for determining the risk of fire forest under weather on the territory of Belarus

Abstract

For two fire seasons in pine plantations in the observation points has been determined the dynamics of their class of fire danger due to weather conditions depending on meteorological factors. Revealed that the main factors affecting the inflammability fo rest fuel are rainfall, temperature and relative humidity, forestry and taxation data plantations. When precipitation of up to 10 mm average moisture content of forest combustible materials below 1.5 times, while their more (10 mm or more) – 1.1 times. The total amount of precipitation received under the canopy of pine plantations by 40–60% lower than in open terrain. Write-off of complex refractive inflammability forests after loss of 5 mm and a siegeing is done by multiplying its value by a factor of 0.1 for each mm of precipitation, followed by its increase in dry day. Total cancellation of the complex index inflammability forests produced a roll of the day more than 10 mm of rain. On the basis of studies to develop techniques for determining forest fire danger due to weather conditions in the Republic of Belarus.