USDA soil taxonomy
compare World Reference Base for Soil Resources
Alfisol
Alfisols distribution
Andisol
Andisols distribution
Aridisol
Aridisols distribution
Entisol
Entisols distribution
Gelisol
Histosol
Inceptisol
Mollisol
Oxisol
Spodosol
Humus Podzol
Moder podzol
Ultisol
Vertisol