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O HORIZON [1 record]

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Record 1 2006-08-23

English

Subject field(s)
  • Soil Science
DEF

An organic layer developed mainly from mosses, rushes, and woody materials.

CONT

The O horizon, is comprised of accrued litter — leaves, twigs, peat soil and organic materials. This is called the O (for organic) horizon. The O horizon has no mineral materials. The deepest part of the O horizon may have organic soils, but they are mostly composed of forest litter and muck.

French

Domaine(s)
  • Science du sol
DEF

Horizon organique formé surtout à partir de mousses, de roseaux et de débris ligneux.

CONT

Horizon O. [...] C'est l'horizon organique dans lequel les débris végétaux sont partiellement décomposés et pratiquement non reconnaissables sur le terrain. Il contient 30 % de matière organique.

Spanish

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