Acrisols

 
Distribution of Acrisols (click to view larger picture)

Acrisols

Acrisols occur dominantly in the wetter parts of the tropics and subtropics and the warm temperate regions in relatively young landscapes.

 

Characteristics

Soils having an argic horizon (a subsurface horizon with distinct higher clay content than the overlying horizon), which has a cation exchange capacity of less than 24 cmolc per kg in some part, either starting within 100 cm from the soil surface, or within 200 cm from the soil surface if the argic horizon is overlain by loamy sand or coarser textures throughout. They have a base saturation (total amount of Ca, Mg, K and Na with respect to the cation exchange capacity) of less than 50 percent in the major part between 25 and 100 cm from the soil surface.

Profondi- Vetic Acrisol
Deep yellow Acrisol derived from granite in hilly terrain, China;
Profondi- Vetic Acrisol (Hyperdystric) (ISRIC reference soil CN019)

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Rolling to hilly landscape in southeast China with a Cambisol (steeper parts) - Acrisol (more sloping parts) soil association

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Deep red Acrisol derived from granite in almost level terrain, China;
Profondi-Vetic Acrisol (Hyperdystric and Chromic) (ISRIC reference soil CN 017)