Desertification assessment and mapping in the Russian Federation

For the first time assessment and mapping of desertification have been performed in Russia at the 1 : 2500000 scale using data of geometrical sounding of the earth and in accordance with the approaches recommended by the United Nations Convention to Combat Desertification (UNCCD). It is shown that desertified areas, areas experiencing desertification, and areas threatened by desertification occupy about 1250000 km 2 . Nineteen causes of changes in natural and natural-artificial systems, seven degradation trends, and three progradation trends are recognized. Data on their prevalence are also presented. Top-priority objectives in combating desertification are outlined.