Abstract:
Using a method of insert planting, we investigated the wind fields and sand discharge rates of three arrangements of belt scheme Caragana korshinskii coppice. The results show that the efficiency of wind-speed reduction of a single belt scheme is low, while that of double and triple belts is high. With an increase in wind speed, the arrangement of three belt schemes had different effects on wind-speed reduction. The efficiency of wind-speed reduction by a single belt remained below 10%; the efficiency of double belts increased at first, and then decreased, while that of the triple belts remained a high level. The sand discharge rate of a single belt was higher than that of double and triple belts. A single belt could decrease the sand discharge rate at a distance of 7h to leeward, while double and triple belts at a distance of 10h. C. korshinskii coppice increased the roughness, which declined behind the belts with an increase in the distance to leeward.
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