The Assessment of Human-Induced Soil Degradation in South and Southeast Asia (ASSOD) is a sequel to the survey of Global Assessment of the Status of Human-Induced Soil Degradation (GLASOD) that was completed in 1991 by UNEP/ISRIC in collaboration with FAQ, the Winand Staring Centre and ITC, based on contributions of a large number of experts worldwide (Oldeman, Hakkeling and Sombroek, 1991). This assessment resulted in a world map at an average scale of 1:10 million showing the global distribution, and severity, of various types of soil degradation.