The effect o Windbreaks on Meteorological Improvement and the Prevention of Wind Erosion

抄録

Dry land occupies one third of the total surface area of the world. The process of desertification has been accelerated recently by over-development, over-cultivation, over-deforestation, over-grazing and over-consumption of water. Wind erosion and sand accumulation due to strong dry winds are increasing due to lack of water, and agrometeorological disasters are apt to occur frequently in the marginal agricultural regions of the dry lands.
Meteorological observations related to the improvement of climatic conditions in aria lands were carried out at the Turfan Desert Research Station, Xinjiang Institute of Biology, Pedology and Desert Research located in the northwestern part of China from 1990 to 1992.
Under and conditions, we demonstrated that wind speed, air temperature, surface soil temperature and relative humidity could be improved, and wind also could be prevented by the use of a tamarisk forest windbreak with a density of 85% and a height of 4.6m in July, 1990, and by the construction of windbreak nets with densities of 45% and 50% and height of 1.85m in July and October, 1990, and May, August and November, 1991.