Experimental and numerical study on hydrodynamics of riparian vegetation
Experimental and numerical study on hydrodynamics of riparian vegetation
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DOI：
10.1016/s1001-6058(14)60088-3
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发表时间：
2014-10
影响因子：
2.5
通讯作者：
Takuya Uotani;K. Kanda;K. Michioku
中科院分区：
文献类型：
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作者：
Takuya Uotani;K. Kanda;K. Michioku
近年来，由于水文、河流和生态过程的变化，许多渠化的河流往往植被严重。河流中茂密的植被常常会阻碍洪水的流动，降低河道的输水能力。另一方面，河流植被提供各种生态服务，如各种物种和生命的栖息地，有机和无机物质的自然循环等。了解植被的水动力特性，对于保护植被的自然特性和保持一定的输水能力具有重要的工程意义。针对柳树在河漫滩或沙洲岸线沿着的特点，采用野外实测、物理模型试验和数值分析相结合的方法，对有河岸植被的明渠水动力进行了研究。重点讨论了植被冠层周围的流动和剪切层结构。
Recently, many channelized rivers tend to be heavily vegetated due to regime shifts in hydrological, fluvial and ecological processes. Dense vegetation in a river frequently obstructs a flood flow and reduces conveyance capacity of channels. On the other hand, river vegetation provides various ecological services such as habitats for various species and life, natural cycle of organic and inorganic substances, etc.. It is of engineering importance to understand vegetation hydrodynamics in order to preserve vegetation nature and keep a certain level of flow conveyance capacity. In view that willows tend to be densely vegetated along the shoreline of floodplains or sandbars, a field measurement, a physical model experiment and a numerical analysis were carried out for investigating hydrodynamics in an open channel with riparian vegetation. Discussion was made focusing on flow and shear layer structures developed around the vegetation canopy.