APPENDIX 1 - Classification of Gypsiferous Soils According to Boyadgiev

Gypsiferous soils with gypsiferous crust and encrustation
French	Russian	American
Sols gypseux à croûte et encroûtement gypseux	Semi-arid brown soils with residual gypsum and arid grey-brown gypsiferous soils	Petrogypsic Gypsiorthods
	Proposal
	Semi-arid gypsum crust soils
Gypsiferous soils with hypercalcic horizon above the gypsic horizon
Sols bruns calcaires à encroûtement calcaire	Semi-arid brown soils with residual gypsum and arid grey-brown gypsiferous soils	Calcic Gypsiorthids
Proposal	Proposal	Proposal
Sols bruns calcaires à encroûtement calcaro-gypseux	Semi arid brown soils with a calcaro-gypseous encrustation	Hypercalcic Gypsiorthids
Gypsiferous soils with a calcic horizon above the gypsic horizon
Sierozem à croûtes gypseuses	Semi-arid brown soils with residual gypsum	Calcic Gypsiorthids
Proposal
Sierozem à amas et/ou nodules calcaire, gypseux en profondeur
Gypsiferous soils with gypsum redistributed by groundwater
Sols hydromorphes à redistribution du calcaire ou du gypse à encroûtement et a croûte gypseuse	Semi-arid wet meadow soils	Typic and Cambic Gypsiorthids
Proposal	Proposal
Sols hydromorphes a redistribution du gypse à encroûtement et croûte gypseuse	Semi-arid wet meadow gypsiferous soils
Moderately saline gypsiferous soils
Sols salins (solonchak)	Typic hydromorphic solonchaks	Typic and Cambic Gypsiorthids
Proposal	Proposal	Proposal
Sols moyennement salins à croûte ou encroûtement gypseux de nappe	Gypsiferous hydromorphic solonchaks	Salic Gypsiorthids
Gypsiferous soils with high salinity
French	Russian	American
Sols salins (solonchaks)	Typic hydromorphous solonchaks	Aquollic Salorthids
Proposal	Proposal	Proposal
Sol fortement salins à croûte ou encroûtement gypseux de nappe	Very heavily saline gypsiferous hydromorphic solonchaks	Aquic Gypsic Salorthids
Undifferentiated soils
Sols minéraux bruts inorganisés d'apport	Arid sandy soils on gypsiferous sands	Typic Torripsamments
		Proposal
		Gypsic Torripsamments