Within the work carded out in MEDALUS projects a database was created, that contains data on soil erosion, vegetation and climate of a field site in Greece (Spata). The database contains data from 1991-1999 on; - climate such as dry and wet temperature, soil temperature, precipitation, evaporation, relative humidity, solar radiation, net radiation, wind speed, wind direction, - soil erosion such as water runoff and sediment loss measurements under different land use types of the same area, - soil such as soil characteristic properties, soil moisture content, - vegetation such as vegetation cover, biomass production, growth rate, species composition. This database can be used for control and prediction of desertification through modelling development.