Desarrollo de una metodología para la estimación de tasas de erosión laminar históricas a partir de raíces expuestas y escáner laser terrestre
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Álvaro Gómez-Gutiérrez [1] ; Susanne Schnabel [1] ; Berenguer Sempere, Fernando ; Judit Rubio Delgado [1] ; José Juan de Sanjosé Blasco
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[1] Universidad de Extremadura
Universidad de Extremadura
Badajoz, España
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- Localización: Avances de la geomorfología en España, 2010-2012: actas de la XII Reunión Nacional de Geomorfología, Santander, 17-20 septiembre de 2012 / coord. por Alberto González Díez, 2012, ISBN 978-84-86116-54-5, págs. 227-230
- Idioma: español
- Títulos paralelos:
- Developing a methodology for estimating historical sheet erosion rates using exposed roots and terrestrial laser scanner
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Resumen
Estimating historical rates of sheet erosion represents a challenge in areas with a long land use history. In this paper, a methodology based on analyzing the morphology of tree stems, exposed roots and surface micro-topography by means of data obtained with a Laser Terrestrial Scanner is presented. Using the base of tree stems and exposed roots, the initial level of the surface was estimated. On the other hand, an existing tree growth model was applied to the trees in the study area in order to estimate their age. Finally, with the antecedent surface, the current surface and the estimated age of every tree, soil erosion rates were calculated. Preliminary results showed historical rates for 3 trees in the study area with values ranging from 7.47 to 9.24 t·ha-1·y-1. These preliminary results indicate an increase in soil erosion during the last century with the highest rates for the youngest trees
