Abstract
Sand transport by wind into oasis and road areas is a very serious problem in the world. One of the prevention technologies is using windbreaks. Polyethylene windbreak net has a similar effect on wind flow as a windbreak forest and it has been used widely in Japan. Due to its easy construction and setup, no water requirement and equal porosity, windbreak net has an advantage for the prevention of sand drifting by wind. Windbreak nets were set up at an arid area at Turpan, Xinjiang, China and at a farmland at Tsukuba, Ibaraki, Japan. Measurement of sand accumulation around the nets and some meteorological observations were carried out to clarify the wind structure around windbreak nets and their microclimate improvement effects, especially to clarify their effect on evaporation and evapotranspiration. It was clear that polyethylene windbreak net has a very useful effect on microclimate for agricultural activities.
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