Agriculture Reference
In-Depth Information
Table 4.2
Determinants of Processes and Their Use in Some National and International Classification Systems
Dominant Determinants of
Processes
Brazilian
Classification
Major Processes
Soil Taxonomy
WRB Soil Classes
Russian Classification
Nature of material
Organic
Paludization, Humification,
Mineralization
Histosols
Histosols
Peat
Latossolos
Sesquioxidic
Ferralitization, Allitization
Oxisols
Ferralsols
Residual peat
Vitric volcanic
Cumulization, Mineral
alteration,
Andisols
Andosols
Soddy organo-
accumulative
Smectitic
Melanization
Vertisols
Vertisols
Volcanic
Rock at shallow depth
Pedoturbation
Leptosols
Lithozems
Vertissolos
Extremes of climate
Low temperature
Gelification, Cryoturbation
Gelisols
Cryosols
Cryozems
Low moisture availability
Calcification, Salinization,
Alkalization
Aridisols
Flux of water in the soil
Accumulation of discrete particles
Eluviation, Illuviation,
Calcification
Alfisols
Albeluvisols
Texture differentiated
Alissolos
Alisols
Nitisols
Acrisols
Leaching, Eluviation, Illuviation
Ultisols
Luvisols
Lixisols
Podzolization, Eluviation,
Illuviation
Spodosols
Podzols
Alfe-humus
Nitossolos
Accumulation as organo-mineral
complexes
Calcification, Gypsification,
Salinization, Alkalization
Solonetz
Alkaline clay-differentiated
Argissolos
Solonchaks
Halomorphic
Luvissolos
Accumulation through dissolution and
crystallization
Gypsisols
Crusty
Esposossolos
Durisols
Calcisols
