FAO soil classification Guide, Meaning , Facts, Information and Description
The FAO developed a supra-national classification, also called World Soil Classification, which offers useful generalizations about soils pedogenesis in relation to the interactions with the main soil-forming factors. It was first published in form of the Unesco Soil Map of the World (1974) (scale 1 : 5 M.). Many of the names offered in that classification are known in many countries and do have similar meanings.Originally developed as a legend to the Soil Map of the World, the classification has been applied by United Nations sponsored projects. Many countries have modified this system to fit their particular needs.
The Soil Units (106) are mapped as Soil Associations, designated by the dominant soil unit,
- with soil phases (soil properties, such as saline, lithic, stony),
- with three textural classes (coarse, medium, and fine)
- three slopes classes superimposed (level to gently undulating, rolling to hilly, and steeply dissected to mountainous)
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