Fluvisols

Abstract

FluvisolsFluvisolscorrelate with FluventsFluventsand Fluvaquents of the USDA Soil TaxonomySoil Taxonomy(Soil Survey Staff in Keys to Soil Taxonomy. USDA-Natural Resources Conservation Service, Washington, DC, 372 p, 2014). The natural fertility of most Fluvisols and their attractive dwelling sites on river levees and higher parts in marine landscapes were recognized since the prehistoric times (IUSS Working Group WRB in World Reference Base for Soil Resources 2014, 203 p, 2015). Fluvisols are found on alluvial plainsAlluvial plains, river fans, valleys, and tidal marshes on all continents and in all climate zones. Under natural conditions periodical flooding is fairly common. These soils have a clear evidence of sedimentary stratification. Soil horizons are weakly developed, but a distinct topsoil horizon may be present. Fluvisols commonly have A and C horizon sequences formed predominantly by fluvial activity.