It is concluded that the phenomena of replacement of spatial and temporal process is typical in the erosion development, the coarsen of riverbeds, the sediment concentration and the change of river regime, etc.

• 分析表明，河流再造床过程在冲刷延展、河床粗化、含沙量及其特征、岸滩侵蚀以及河型变化等方面具有较典型的时空演替现象。