The areas susceptible to desertification in Brazil include the semi-arid, and dry sub-humid areas of tropical surroundings, occupying around 1,340,000 km ² and directly reaching 30 million people. Process resulting from natural causes and also the action of man brings with dramatic consequences for economic and social environmental costs. With the launch in 2004 of the Pan Brazil Program theme has been treated with its due importance by the government and organized civil society, gaining national visibility internationally and projecting the country as one that has more advanced in this fight, under the Convention United Nations Convention to Combat Desertification. More a reflection of this effort now is embodied in this important publication is the Atlas of Areas Susceptible to Desertification in Brazil.