Reference soil Belgium 10: Stagnosol

BE010

Stagnosols are often related to Luvisols and occur for the greater part in humid and perhumid temperate regions in West and Central Europe, North America, Australia and Argentina.

Characteristics

Soils having within 50 cm of the soil surface reducing conditions (soil conditions with low redox potential (negative logarithm of the hydrogen potential (rH) and presence of free iron (Fe2+) on freshly broken surfaces) and in 50% of the layer a stagnic colour pattern (strong mottling of soils in such a pattern that peds surfaces are lighter (at least one Munsell value) and paler (at least one chroma) than ped interiors, which are more reddish and brighter (at least one chroma)). The stagnic color pattern develops under temporarily saturation of a perched water table from surface water, long enough to allow reducing conditions to arise. The topsoil can be bleached and concretions can occur in the subsoil. They develop often in slowly permeable, unconsolidated materials of various origins.

Distribution of Stagnosols (rough estimation supplied by soilgrids)

Reference soil BE010: Stagnosols

Classification

WRB 2014

Stagnosol

FAO-UNESCO-ISRIC 1988

Stagnic Luvisol

More images

No analytical data for this profile

Profile description

A 0-10 cm	very dark grey(10YR 3/1, moist) ; clay loam moderate ; common (5-15%) distinct clear (0.5-2 mm) dark yellowish brown fine (2-6 mm) mottles; common (5-15%) medium artefacts (6-20 mm) ;
A;E 10-21 cm	dark grey(5Y 4 4/1, moist) ; clay loam weak ; many (15-40%) prominent sharp (< 0.5 mm) dark yellowish brown fine (2-6 mm) mottles; common (5-15%) coarse artefacts (> 20 mm) ;
E 21-40 cm	dark greyish brown(10YR 4/2, moist) ; loam moderate ; abundant (> 40%) distinct sharp (< 0.5 mm) yellowish brown medium (6-20 mm) mottles; few (2-5%) coarse artefacts (> 20 mm) ;
Btg 40-100 cm	yellowish brown(10YR 5/8, moist) ; clay loam strong coarse / thick ; many (15-40%) prominent clear (0.5-2 mm) yellowish brown prominent clear (0.5-2 mm) coarse (> 20 mm) coarse (> 20 mm) mottles; few (2-5%) coarse artefacts (> 20 mm) ;
C 100-130 cm	sand (unspecified) ; no rocks (0%) ;

Age of the land Surface	Iate pleistocene, periglacial, commonly recent soil formation on preweathered materials.
Kind 1 (parent material) ; Parker (eds), 1984	UK2;UE1
Remarks on Parent Materials	Loess and sand that has been deposited under the influecnce of gelifluction and has experienced freezing and thawning. A profile close to this site, situated on the lower part of the slope (nearly flat land) was well drained. While this profile, upslope is imperfectly drained

Land use or vegetation in the immediate vicinity of the site	unspecified rainfed arable cultivation
Remarks on Land Use / Vegetation	Grass cover

Altitude	68m
Physiograpy description	low hills
Physiographic position of the site	middle slope
Slope	06%
Form of the slope surrounding the site	convex
Slope gradient %	5.0%
Topography; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	sloping

Drainage class ; FAO (2006) - Guidelines for soil description	imperfectly drained
Depth to groundwater table	100cm

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Reference soil Belgium 10: Stagnosol

Characteristics

Reference soil BE010: Stagnosols

Classification