Inceptisols are a soil order in

USDA soil taxonomy USDA soil taxonomy (ST) developed by the United States Department of Agriculture and the National Cooperative Soil Survey provides an elaborate Soil classification, classification of soil types according to several parameters (most commonly their p ...

. They form quickly through alteration of parent material. They are more developed than Entisols. They have no accumulation of clays,

iron oxide An iron oxide is a chemical compound composed of iron and oxygen. Several iron oxides are recognized. Often they are non-stoichiometric. Ferric oxyhydroxides are a related class of compounds, perhaps the best known of which is rust. Iron ...

aluminium oxide Aluminium oxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula . It is the most commonly occurring of several Aluminium oxide (compounds), aluminium oxides, and specifically identified as alum ...

or organic matter. They have an ochric or umbric horizon and a cambic subsurface horizon. In the World Reference Base for Soil Resources (WRB), most Inceptisols are Cambisols or Umbrisols. Some may be Nitisols. Many Aquepts belong to Gleysols and Stagnosols.

Suborders

* Aquepts – with a water table close to the surface *

Anthrepts In the USDA soil taxonomy, Anthrepts is a term for soil with evidence of human habitation and farming. See also *Anthrosols in the World Soil Classification. *Inceptisols of which anthrepts are a suborder of. References

{{reflist Types of so ...

– with a plaggen or anthropic epipedon, a sign of intense and prolonged human activity * Gelepts – in very cold climates * Cryepts – in cold climates * Udepts – in humid climates * Ustepts – in semiarid and sub-humid climates' * Xerepts – in areas with very dry summers and moist winters

References

* * * {{Authority control United States Department of Agriculture Pedology Types of soil