Phaeozem

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Luvic Phaeozem in Luqmuts, Ethiopia Luvic Phaeozem thapto Calcaric Regosol Luqmuts Ethiopia.jpg
Luvic Phaeozem in Luqmuts, Ethiopia
Distribution of Phaenozem soils as defined by the World Reference Base for Soil Resources classification:
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Dominant (more than 50% of soil cover)
Codominant (25-50%)
Associated (5-25%) Phaenozems.svg
Distribution of Phaenozem soils as defined by the World Reference Base for Soil Resources classification:
  Dominant (more than 50% of soil cover)
  Codominant (25-50%)
  Associated (5-25%)

A Phaeozem in the World Reference Base for Soil Resources (WRB) is a dark soil with a high base status, but without a secondary carbonates within one metre of the soil surface. Phaeozems correlate with the Udolls and Aquolls (Mollisols) of the USDA soil taxonomy. [1] [2]

Contents

These soils are found mainly in humid and sub-humid tall-grass steppes; there are extensive areas of them in the United States, Argentina and China. Phaeozems form from unconsolidated sediments such as loess and glacial till and typically have organic matter contents of about 5% and a pH of 5–7.

Intensive agricultural use is widespread and includes wheat, soybean and cotton production and improved pastures for cattle.

See also

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References

  1. Delvaux, B.; Brahy, V. "Mineral Soils conditioned by a Wet (Sub)Tropical Climate". FAO. Retrieved 14 June 2014.
  2. "Major Soils of the World. ISRIC Wageningen, The Netherlands, 2001" (PDF). Archived from the original (PDF) on 2016-03-04. Retrieved 2014-06-14.

Further reading