Vegetation in open channels alters turbulent and other hydraulic characteristics of flow. Hence, conventional methods for computing bed shear stress in bare channels are not applicable in such channels. The present study, therefore, experimentally investigates the distributions of velocity in 3D in gravel bed channels with vegetation and investigates six different methods for estimating bed shear stress. The distribution of shear stress is basically controlled by the spatial distribution of vegetation as well as the biomechanical and architectural features of these plants. It is found that near the bottom of the flume, the shear stress changes in dense layers, constituting a layered shape.

明渠中的植被会改变湍流和其他水力特性。因此，用于计算裸露通道中的床层剪切应力的常规方法不适用于此类通道。因此，本研究实验性地研究了植被在砾石层通道中3D的速度分布，并研究了六种不同的估算床层切应力的方法。剪应力的分布基本上由植被的空间分布以及这些植物的生物力学和建筑特征来控制。发现在槽的底部附近，剪切应力在致密层中变化，从而形成分层的形状。