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Forest fire impact on the hydrological response in small catchment of NW Spain

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Author(s): J. Canceio-González | M.A. Alvarez | F. Díaz-Fierros

Journal: Flamma
ISSN 2171-665X

Volume: 4;
Issue: 2;
Start page: 115;
Date: 2013;
Original page

Keywords: Forest fires | Hydrology | Paired catchment

ABSTRACT
Hydrological studies were carried out in two catchments (burnt and unburned), to determine the processes related to the streamflow changes and the possible effects on the runoff coefficients produced by a forest fire in the summer of 2007, which affected 50% of the area of one of the catchments. Comparative analysis of the changes in the monthly streamflow values revealed that during the wettest months, the runoff was higher in the burnt catchment during the first two years, and was very similar in both catchments during the third year. Calculation of the annual runoff coefficient confirmed these findings and showed that the differences between the coefficients in the catchments were negligible in the final year. In both cases, this can be explained by regeneration of the vegetation after fire.
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