EDAFOLOGÍA, Vol. 10 (3), pp. 71-77, 2003
TRAZADORES RADIOISOTÓPICOS DE LA REDISTRIBUCIÓN DEL SUELO: SU APLICACIÓN EN LADERAS MEDITERRÁNEAS
A. NAVAS1, J. MACHÍN1, J. SOTO3, B. VALERO2
1,2 Estación Experimental de Aula Dei. Instituto Pirenaico de Ecología. Consejo Superior de Investigaciones Científicas. Apartado 202. 50.080 Zaragoza. Spain. anavas@eead.csic.es.
3 Dpto. Ciencias Médicas y Quirúrgicas. Universidad de Cantabria. Avda. Cardenal Herrera Oria s/n. 39011 Santander. Spain.
In the central part of the Ebro basin, there areas with a high risk of desertification due to hydric erosion. Application of radiotracers to assess soil movement on slopes offer a valuable potential to identify sediment sources as well as to discriminate erosion or agradation areas. In this work we apply radiometric techniques on slopes of the central South Pyrenean region. The soil redistribution seems to be affected by the physiographic position and orientation, besides land uses and vegetation cover also affect the soil losses.
Key words: erosion, slopes, orientation, land cover and uses, 137Cs, 210Pb, Aragón, Spain.