Vegetations in the floodplain affect the time coming into the main channel of the floodplain flow and arouse the increase of flow velocity in the main channel along the river.

• 主槽的水流紊动强度主要与床面糙率有关，滩地植被影响了滩地水流的归槽时间，使主槽水流流速沿程增大。