Soils and environments 10. The lithosphere and the soil as power equipment and hazard

1. A FAO-UNESCO talajosztályozási rendszere The Food and Agriculture Organization of the United Nations (FAO) developed a supranational classification, also called World Soil Classification, which offers useful generalizations about soils pedogenesis in relation to the interactions with the main soil-forming factors. The Soil Units (153) were 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) Soil Units form 32 World Classes.

Soil-classification system of FAO-UNESCO Geographical position of soils of FAO-UNESCO

Soils with high mould content Profile of Histosol (

Rock-forming soils Profile of Andosol Profile of Arenosol Profile of Vertisol (

Topography- and relief-forming soils Profile of Fluvisol Profile of Gleysol (

Profile of Regosol Profile of Leptosol (

Relative young soils Profile of Cambisol (

Humid tropical and subtropical soils Profile of Ferralsol Profile of Nitisol Profile of Acrisol

Pict Profile of Alisol Profile of Lixisol Profile of Plinthosol (

Soils of arid or semiarid climate Profile of Solonchak Profile of Solonetz Profile of Gypsisol (

Profile of Calcisol Profile of Durisol (

Soils of steppe climate Profile of Chernozem Profile of Kastanozem (

Profile of Phaeozem Profile of Greyzem (

Soils of humide, cold and temperate climate Profile of Luvisol Profile of Podzoluvisol Profile of Planosol (

Profile of Podzol Profile of Albeluvisol Profile of Cryosol (

Antropogenous soils Profile of Anthrosol Profile of Technosol (

Thank you for your attention!