摘要
对不同材料类型带状沙障的风速、地表粗糙度及近地表输沙率进行对比研究,结果表明:3种材料带状沙障风速减弱百分比和粗糙度随着与沙障距离的加大逐渐减小,地表输沙率随着与沙障距离的加大逐渐增加。3种材料沙障的防护效益均达不到10倍带高处,且沙柳和四翅滨藜的防风阻沙效益显著大于尼龙网。
Through comparative study on lose wind velocity,roughness length and the rate of sand transporting of the dissimilarity height of different material types of sand barrier. The results shown that with the increasing of distance from the sand barriers,the percentage of losing wind speed and the roughness length of three kinds of materials decreasing gradually,and the rate of sand transporting increasing gradually. The wind prevention and sand resistance effect of three kinds of materials is not reach to 10H,and the benefit of the wind prevention and sand resistance of Atriplex canescens barrier and Salix psammophila barrier are greater significantly than nylon net barrier.
出处
《水土保持学报》
CSCD
北大核心
2010年第1期41-44,共4页
Journal of Soil and Water Conservation
基金
国家"十一五"科技攻关项目(2006BAD26B03)
关键词
沙障
防风阻沙
粗糙度
sand barrier
wind prevention and sand resistance
roughness length
