Entisols are soils
of recent origin. The central concept is soils developed in unconsolidated
parent material with usually no genetic horizons except an A horizon.
All soils that do not fit into one of the other 11 orders are Entisols.
Thus, they are characterized by great diversity, both in environmental
setting and land use.
Many Entisols are found in steep, rocky settings. However, Entisols
of large river valleys and associated shore deposits provide cropland
and habitat for millions of people worldwide.
Globally Entisols are the most extensive of the soil orders, occupying ~18% of the Earth's ice-free
land area. In the US, Entisols
occupy ~12.3% of the land area.
Enttisols are divided into 6
suborders: Wassents, Aquents, Arents, Psamments,
Fluvents, and Orthents. Click
here for more information about these suborders. Click
here to view a map of their distribution in the US.