Fire behavior in controlled burning on forest area in Sancán, Manabí, Ecuador
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Controlled burning is commonly used by farmers on forestry lands to clear the land prior to establishing agricultural crops. The objective of this experimental work was to evaluate the behavior of fire in controlled burning on forestry lands in the Sancán commune, province of Manabí, Ecuador. 10 plots of 1.18 x 5 m were delimited in fuel rows and three plots of 20 x 50 m in dispersed fuels. During the burning, the variables air temperature, relative humidity and wind speed were measured at 0.50 meters above the ground and more than 3.00 m away from the end of the plot where the fire started. The fuel material was characterized considering weight, thickness and moisture content before burning. The fire behavior parameters evaluated were propagation speed, linear fire intensity, flame heights, lethal drying height and heat released per unit area. Fire behavior showed higher mean values for all parameters in the plots located in the fuel rows, except for the case of propagation speed. Besides, in these plots, the standard deviation values obtained for each variable indicate greater dispersion of the data with respect to the mean, which implies less homogeneous fire behavior in a general sense. The results obtained can be used to support the responsible use of fire in forestry lands.
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References
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