Reference soil Tajikistan 01: Anthrosol

TJ001

Anthrosols occur over large areas in the Far East where growing of paddy rice takes place for centuries, in the Middle East where prolonged irrigation has been practised, and over small areas in western Europe and other parts of the world where long-time fertilization and earth-manuring have profoundly modified existing soils

Characteristics

Soils having either a hortic, irragric, plaggic or terric horizon 50 cm or more thick, or an anthraquic horizon and an underlying hydragric horizon with a combined thickness of 50 cm or more.

Distribution of Anthrosols (rough estimation supplied by soilgrids)

Reference soil TJ001: Anthrosols

SU010

Classification

WRB 1998

Regi-Irragric- Anthrosol

FAO-UNESCO-ISRIC 1988

FAO-UNESCO-ISRIC 1974

Cumulic Anthrosol

Calcic Cambisol

Local classification:	Serozem

Mode of accumulation or deposition of parent material	man-made
Remarks on Parent Materials	irrigation deposits
Soil Depth	100cm
Texture of parent material (second entry)	silty
Weathering Resistance	moderate
General characterization of the status of weathering of solid rock	slightly

Physiographic Unit	valley bottom
Physiographic position of the site	flat
Regional landform; McDonald, R.C., Isbell, R.F. et all, 1984; Australian soil and land survey Field Handbook, Inkata Press, Melbourne.	valley
Slope	0%
Topography; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	flat or almost flat

Drainage class ; FAO (2006) - Guidelines for soil description	well
Estimated permeability (class) of least permeable part of the profile	moderate
Estimated run off (class)	slow

Slaking of aggregates by tillage, rainfall or frost (USDA/SCS, 1979)	surface slaked; sorted sand/silt, some clay films
Rock outcrop class (FAO (2006) - Guidelines for soil description)	none
Surface stoniness class (FAO (2006) - Guidelines for soil description)	none

Ap1 0-5 cm	brown (7.5YR 5/2, moist)silt,platy,friable,moderately porous (40-60 vol%),plough pan pans,slightly calcareous (0-2%),abrupt smooth boundary to,
Ap2 5-22 cm	brown (7.5YR 5/2, moist)silt,crumb,friable,slightly calcareous (0-2%),clear smooth boundary to,
Bk 22-48 cm	reddish brown (5YR 5/3, moist)silt,coarse prismatic,frequent calcareous soft segregations,moderately calcareous (2-10%),gradual smooth boundary to,
48-82 cm	(7.5YR 6/3, moist)silt,prismatic,few krotovinas,moderately calcareous (2-10%),gradual smooth boundary to,
C 82-100 cm	(7.5YR 6/3, moist)silt,porous massive,moderately calcareous (2-10%),

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Reference soil Tajikistan 01: Anthrosol

Characteristics

Reference soil TJ001: Anthrosols

Classification