Wind velocity and roughness length influence the friction velocity, the range of average friction velocity is 0.0580.092m/s. The threshold friction velocity of the soil surface is about 0.082m/s, less than the surface covered by vegetation, sand, large particle.
摩阻风速受风速和地表粗糙度的影响,日平均摩阻风速最大变化范围是0.058～0.092m/s。
参考来源 - 西安市建筑开挖工地地表粉尘释放通量及控制对策研究Calculated friction velocity caused by tidal current (u*_c)) is 0.39～6.8cm/s. Roughness length z_0=0.31cm.
计算得出潮流摩阻流速u*_c。 范围为0.39～6.8cm/s,粗糙长度Z0=0.31cm。
参考来源 - 崇明东滩水沙输移及植被影响分析·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
Aerodynamics roughness length is one of important indexes for estimating topsoil erosion.
耕作土壤表面空气动力学粗糙度是评价土壤可蚀性的重要指标。
Aerodynamic roughness length is a important feature to easement soil resistance to wind erosion.
耕作土壤表面空气动力学粗糙度是评价土壤可蚀性的重要指标。
Vegetation characteristics, such as height, density, coverage, lateral coverage of vegetation are closely related to the aerodynamic roughness length.
植被高度、密度、覆盖度、侧影盖度等特征，通过影响下垫面空气动力学粗糙度来达到抑制风蚀的效果。
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