Soils, regoliths and their parent materials were investigated in relation to the developement of badlands (in the Pre-Pyrenees, in NE Spain) on Late Cretaceous mudrocks under a mountain Mediterranean Climate.
Seasonal patterns of runoff and erosion responses to simulated rainfall in a badland area in Mediterranean mountain conditions (Vallcebre, southeastern Pyrenees)
Badland ; Domaine méditerranéen ; Ecoulement ; Erosion des sols ; Erosion hydrique ; Espagne ; Humidité du sol ; Montagne ; Pyrénées ; Simulation de pluie ; Variation saisonnière ; Vitesse d'érosion
Regolith surface characteristics and response were examined over a three-year period in a badland area in a Mediterranean middle-mountain zone near Vallcebre (Eastern Pyrenees). The purpose of this study is to analyse the temporal patterns
of the response to simulated rainfall for the badland surfaces at Vallcebre in terms of runoff and sediment production. The dependence of this response on certain variables (day number, antecedent moisture and bulk density) is studied.
Cal Parisa basin (eastern Spain), was selected as a representative of extensive areas on clayey bedrock formerly used for farming, nowadays almost abandoned, where badlands are of great importance as far as sediment production is concerned.
The present paper summarizes the main results obtained, with special emphasis on the dynamics of a little badland area which seems to supply roughly 14 kg per square meter and year of silty sediment, with marked differences between summer