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An alluvial river is one in which the bed and banks are made up of mobile sediment and/or soil. Alluvial rivers are self-formed, meaning that their channels are shaped by the magnitude and frequency of the floods that they experience, and the ability of these floods to erode, deposit, and transport sediment. For this reason, alluvial rivers can assume a number of forms based on the properties of their banks; the flows they experience; the local riparian ecology; and the amount, size, and type of sediment that they carry.

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  • Alluvial river (en)
  • 沖積河流 (zh)
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  • 沖積河流(英語:alluvial river)是指河床和河岸由流動的沉積物構成的河流。它們的渠道是由洪水的侵蝕、搬運和沉積所造成的。由於河水流量、坡度、沉積物供應和河岸物質的差異,沖積河流呈現多種形式,包括直流、灣流,曲流、和辮狀河等。由於沉積物和水流很少在地表均勻分佈,因此直流在自然中相對較少。灣流和曲流較多。辮狀河的形成多在処,河流到緩坡地方,流速減低引起沉積物超載。故快速丟棄沉積物。導致辮狀河 (zh)
  • An alluvial river is one in which the bed and banks are made up of mobile sediment and/or soil. Alluvial rivers are self-formed, meaning that their channels are shaped by the magnitude and frequency of the floods that they experience, and the ability of these floods to erode, deposit, and transport sediment. For this reason, alluvial rivers can assume a number of forms based on the properties of their banks; the flows they experience; the local riparian ecology; and the amount, size, and type of sediment that they carry. (en)
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  • An alluvial river is one in which the bed and banks are made up of mobile sediment and/or soil. Alluvial rivers are self-formed, meaning that their channels are shaped by the magnitude and frequency of the floods that they experience, and the ability of these floods to erode, deposit, and transport sediment. For this reason, alluvial rivers can assume a number of forms based on the properties of their banks; the flows they experience; the local riparian ecology; and the amount, size, and type of sediment that they carry. At a smaller spatial scale and shorter time scale, the patterns of water movement, from events such as seasonal flooding, create different patches of soils that range from aerobic to anaerobic and have differing nutrients and decomposition rates and dynamics. When looking at larger spatial scales, the topographic features have been created by glacial events, such as glaciation and deglaciation, changes in sea-levels, tectonic movements, and other events that occur over longer time scales. These short and long-term scales together determine the patterns and characteristics of alluvial rivers. These rivers also consist of certain topographic features that include hillslopes at the formation of the valley's sides, terraces, remains of old floodplains at higher elevations than the floodplain that is currently active, levees that are natural, meander scrolls, natural drainage channels, and floodplains that are temporary, as well as permanent. (en)
  • 沖積河流(英語:alluvial river)是指河床和河岸由流動的沉積物構成的河流。它們的渠道是由洪水的侵蝕、搬運和沉積所造成的。由於河水流量、坡度、沉積物供應和河岸物質的差異,沖積河流呈現多種形式,包括直流、灣流,曲流、和辮狀河等。由於沉積物和水流很少在地表均勻分佈,因此直流在自然中相對較少。灣流和曲流較多。辮狀河的形成多在処,河流到緩坡地方,流速減低引起沉積物超載。故快速丟棄沉積物。導致辮狀河 (zh)
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