Agricultural retreat ; Arid area ; Digital elevation model ; Gully erosion ; Murcia ; Semi-arid area ; Slope gradient ; Soil erosion ; Spain ; Statistical analysis ; Watershed
. At catchment scale all abandonned fields were surveyed and characteristics of each field were described. Additionally the AA. surveyed abandonned and cultivated terraces and used statistical analyses to determine the factors that influence terrace failure
erosion and the statistical analysis showed that these fields had significantly steeper slopes, were terraced and had cereals as previous land use. Factors that increase the risk of terrace failure were land abandonment, steeper terrace slope, loam texture