Soil loss and soil water content affected by land levelling in Penedès vineyards, NE Spain

This paper analyses the differences in soil moisture, runoff and sediment concentration resulting from land levelling works carried out before new vineyard establishment in a reference wine region of NE Spain. In low disturbed soils, low differences in soil moisture were observed, while in high disturbed soils, soil moisture and water infiltration of the surface were always lower than in the low disturbed ones, while soil sealing was higher in high disturbed than in the low disturbed soils. Differences in runoff and sediment concentrations were also observed. The most disturbed plot showed a higher sediment concentration in runoff, which together with higher runoff volumes gave higher erosion rates and soil losses than the low disturbed one. The differences within the most disturbed soils were high after high intensity rainfall events, while no significant variations were observed in the least disturbed ones.