Small-scale experiments on soil-roughness evolution and first applications to soil erosion risk assessment

The advantages of photogrammetric technique to understand soil roughness evolution are discussed. The technique is not destructive and not invasive, allowing replications of measurements without any contact with the target surface. The technique also allow to preserve the photographic record indefinitely and can be used for further multitemporal elaborations. The data are captured in digital form and can therefore easily be transferred between geographical information system (GIS). Moreover, the employed technique gives an opportunity to introduce remote sensing data related to geophysical parameters into the hydrological models.