关键词: 内蒙古高原, 沙漠化过程, 治理对策

Abstract: In Southeast part of Inner Mongolia, the contemporary processes of desertification can be divided-into four types:(l) The process of dune reactivation;(2) The process of steppe shrub desertification;(3) The process of Wind erosion and gritty Surface formation;(4) The process of farmland soil deflation. In middle 70's, there were over 20, 000km² of all kinds desertified areas in the region but up to mid-80's, the desertified areas had grown to 33, 000 km². The annual growth rate is 5.1%. In the studied region, the precipitation is decreaseing commonly and varies greatly, the drought season tends to be prolonged. The desertification will continue to develop. It may be predicted that by the 2000, the desertified land will expand to 11, 000km², the total areas will amount to 44, 000km². The general policy for developing local agricultural economy might be "To strengthen the agriculture, develop the forestry and stock raising", to perfect the system of farmland protective forest, change the habits of cultivation without fertilizing and set up high and stable-yield farmlands. To control the land desertification is the key for the development of agriculture.