Metodologías empleadas para el estudio de la erosión edáfica en incendios forestales

One of the most obvious environmental consequences of the wildfires is the modification of the vegetation cover and litter, it developed variations in the hydro-geomorphological behavior on scenarios affected by the fire. Wildfires in semiarid areas increased runoff rates and erosion after fire. Therefore, in semiarid areas replanted with coniferous forests, scrub steppe, degraded soils, steep slopes, soft lithologies and faster storms will result in flash floods or sudden flows after wildfires. The fire of August 2008 in the Zuera Mountains (Zaragoza, Spain) affected more than 2,000 hectares of pine forest, on calcareous soils. The storms after the wildfire developed flash floods in alluvial fans around 68 m 2 . Some of these alluvial fans have been monitored using erosion needles and laser scanner; soil characterization and vegetation studies with linear transects; infiltrations; rainfall simulations; and water repellency were measured. The results to apply different techniques shown a sediment accumulation around 1 m thick in alluvial fans; high infiltration rates in soils burned covered with ashes; less runoff rates in soils covered with wood-chip; successful regeneration in northern slopes; and a mild water repellency in these soils.

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