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SOIL ALKALINIZATION [1 record]

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Alphabetical list of terms

Record 1 2005-11-22

English

Subject field(s)
  • Geochemistry
  • Soil Science
DEF

The process whereby the exchangeable sodium content of a soil is increased.

CONT

There are different kinds of salts in soils; the more common ones being calcium and magnesium. Sodium is another salt found in soils and, if concentrated in the upper soil, the accumulation is called alkalinization.

French

Domaine(s)
  • Géochimie
  • Science du sol
DEF

Phénomène d'augmentation de la teneur en sodium échangeable d'un sol pouvant provoquer une forte élévation du pH et une dégradation de la structure du sol.

CONT

«La solonisation» : début de destruction de complexe absorbant par la perte de silice. Le complexe est surtout saturé d'ions Na, donc sol très alcalin. Dispersion des colloïdes et lessivage très important d'argile à cause du milieu alcalin provoqué par le carbonate de soude.

Spanish

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