Both in small experimental plots and in the “Aísa Valley Experimental Station”(Central
Spanish Pyrenees), the role of different land-uses in explaining runoff and sediment yield is
being studied in closed, experimental plots. In these plots, continuous information on
overland flow and suspended and solute sediment concentration is obtained. Results
suggest that cereal cultivation in steep slopes encourages soil erosion, especially under non-
conservative systems. The passage of cereals into meadows represents an improvement of …