The Mapping of Desertification Processes

Abstract

A new cartographic method developed at the Desert Institute is described and elucidated A new set of quantitative criteria have been worked out to assess the intensity of erosion processes. The maps contain much useful information on desertification especially the risk factors. Contrary to the usual assumptions, waterlogging was demonstrated not to be a causative factor. General mapping problems are explained. The usual maps are too local, too small scale to identify general desertification risk signals. The methods of surveying necessary for cartographic purposes will include remote survey and specialized reports. International projects (e.g. Mali and Mongolia) demonstrated the usefulness of these methods. Of especial interest is that for the Aral sea basin.