Arid and semi-arid lands account for one third of all the lands on earth. Desertification is now prevailing and is occasionally linked to the decrease of rainfall due to climatic change. However, it is mainly linked to adverse human activities, i. e., excessive cultivation, over-grazing, deforestation and excessive consumption of water resources.
Wind erosion and agro-meteorological disasters are apt to occur frequently in the marginal agricultural regions of arid lands. There are various prevention methods against desertification. A practical prevertion technique is introduced as a case study of environmental control or meteorological improvement Turpan (China).
Meterological observations related to the improvement of climatic conditions in arid lands were carried out at the Turpan Desert Research Station, Xinjiang Iinstitute of Biology, Pedology and Desert Research located in the northwestern of post China from 1990 to 1992.