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以铺设于2000年和2003年沙柳沙障为研究对象,研究了不同铺设年限的沙柳沙障对沙漠地区风速特征的影响,以探讨沙柳沙障的防风固沙效果。结果表明:随着沙柳沙障年限的增加,设障沙柳沙障样地的防风效能增大,2个设障年限样方的防风效能均在10cm处达到最大,100cm处最低;设障沙柳沙障使地表粗造度显著地提高,2000年试验样地与2003年试验样地的地表粗糙度值分别是对照粗糙度值的2.35倍和3.69倍;2000年铺设的沙柳沙障内的风速廓线曲线比2003年的变化更显著。
Taking the Salix psammophila in 2000 and 2003 as the research object, this paper studied the effect of Salix psammophila sand dunes with different laying years on the wind speed characteristics in the desert so as to explore the windbreak and sand fixation effect of Salix psammophila. The results showed that with the increase of the Salix aeoliani age, the windbreaking effectiveness of the Salix psammophila shelterbelt increased. The windbreaking effectiveness of the two quadrats reached the maximum at 10 cm and the lowest at 100 cm. Shaliu sand barrier made the surface roughness significantly increased. The surface roughness of 2000 experimental plots and 2003 experimental plots were 2.35 times and 3.69 times that of the control roughness respectively. The wind profile within the curve is more pronounced than in 2003.