THE ARID AREA OF THE WORLD AND THEIR CHANGES IN CONDITIONS OF MODERN CLIMATIC WARMING
The evaluation of changes that take place in dynamic of arid lands and desertification processes with deflation degree of climatic factor influence on land aridisation was carried out. The total land area and area of arid lands by separate mainland, including the territory of Dagestan and the Southern regions of Russia are characterized for the first time. It was shown that the problem of arid lands and desertification has both scientific and social-economic meanings. In different arid and sub-arid zones the origin and dynamic properties depend on regional-wide conditions: in warm-temperate and sub-arid conditions the processes of desertification are manifested with the leading role of anthropogenic factor, and in tropic and subtropics zones under the influence of climatic factor.