Comparación de la repelencia al agua del suelo de zonas afectadas por incendios forestales, en análisis realizados in situ y en laboratorio

Abstract

The fire in the vegetation is caused by climatic factors, in this study it was produced by the production of artisanal coal in a part of the moor. This investigation makes it possible to compare the variation in water repellency level in situ and in the laboratory using the Water Drop Penetration Time and Molarity Ethanol Droplet Test methods between burning and non-burning soils, taken in the Community of Pesillo-Cantón Cayambe, as well as also the different alterations of the parameters: pH, electrical conductivity, humidity and organic matter. Several authors agree that the repellency changes between the burned and unburned soil vary due to the fact that in the burned soil a large amount of ash and debris is produced, as well as climatic variations. The results obtained from repellency show that in burnt and unburned soil dried at 40 ° C they did not show water repellency and therefore maintain the repellency values found in the field that all were non-repellent, while at 65 ° C and 105 ° C the burned soil presented greater repellency than the unburned soil. In burnt soil the parameter with the highest correlation to water repellency is the electrical conductivity, showing values of r from 0.93 to 40 ° C, this being the highest value of the correlations. In unburned soil the parameters with the highest correlation are organic matter, with a value of r from 0.97 at 40 ° C and 105 ° C and% humidity with a value of r from 0.75 to 65 ° C.