河流相的层序地层结构是由沉积物的供给和可容纳空间之间的相互作用决定的，其居序与体系域的识别和划分则是根据河道砂体的叠置方式及相伴生的古土壤的发育情况或河流类型来进行的，低水位早期主为侵蚀下切无沉积记录，低水位晚期主为辩状河；水进时期先为曲流河、后为网状河；高水位时期为曲流河，水退时期主为辩状河。 The sequence stratigraphic structure of fluvial facies is determined by the interaction between sediment supply and accommodation space. Its sequence and system tract identification and classification are based on the superimposition of channel sand bodies and the accompanying ancient Soil development or river type, the early low water level was mainly eroded and no sedimentary record was recorded, and the late low water level was the main defense river. In the water intake period, the meandering river was first followed by the reticular river. The high water level was Meandering river, water back to the main debate for the river.