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brown earth

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acid soil

acid soil  

Soil with a pH under 7, such as podzols and brown earths. Acidity in a soil may be due to the leaching out of cations when precipitation exceeds evapotranspiration. Other factors include the nature ...
acidification

acidification  

The process by which acids are added to a water body or soil, causing a decrease in buffering capacity and leading to a significant decrease in pH that may lead to the water body or soil becoming ...
Alfisols

Alfisols  

A soil order of the US soil classification. Alfisols are young, acid soils, with a clay-rich B horizon, commonly occurring beneath deciduous forests. See brown earth.
brown forest soil

brown forest soil  

A little used soil-profile term that has been applied to both acid brown earths and brown podzolics.
cambic horizon

cambic horizon  

A weakly developed mineral soil horizon of the middle part (B horizon) of soil profiles, and one that has few distinguishing morphological characteristics except for evidence of weathering and ...
Inceptisols

Inceptisols  

An order of mineral soils that have one or more horizons in which mineral materials have been weathered or removed. Inceptisols are in the early stages of forming visible horizons, and are only ...
mull

mull  

A well-aerated, fertile, surface soil that is rich in organic material mixed with mineral matter by the activity of animals (especially earthworms). Animal and vegetable material is not recognizable ...
rendzina

rendzina  

A brown earth soil of humid or semi-arid grassland that has developed over calcareous parent material. The term is now obsolete and rendzinas may fall within the orders Inceptisols or Mollisols.
sol brun lessivée

sol brun lessivée  

A type of brown earth from which some clay has been leached, forming an E horizon.
Tundra Soil

Tundra Soil  

A dark soil with a thick, peat layer of poorly decomposed vegetation, which is usually underlain by a frozen layer of soil. Translocation is limited and there is, therefore, little development of ...

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