Reference soil Sweden 14: Regosol

SE014

Regosols are found in areas where soil has been eroded to the extent that the underlying unconsolidated materials come near to the surface, or where soil formation has not played an important role, e.g. in desert regions. The name comes from the greek 'rhegos' :blanket meaning young soils on weathering materials.

Characteristics

Soils in medium and fine textured materials, having no distinctive horizons other than an ochric horizon at the surface.

Distribution of Regosols (rough estimation supplied by soilgrids)

Reference soil SE014: Regosols

BRIEF CHARACTERIZATION OF THE SOIL: A coarse sandy, very permeable profile with a slight podzolic development in the upper 15 cm.

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Physical characteristics

Particle size distribution

Depth (cm)	Gravel % v/v	very coarse sand % w/w	coarse sand % w/w	medium sand % w/w	fine sand % w/w	very fine sand % w/w	Total sand % w/w	coarse silt % w/w	fine silt % w/w	Total silt % w/w	Clay % w/w
0-3	-	-	-	-	-	-	93	4.5	1.5	6	1
3-10	-	-	-	-	-	-	91	5	2.1	7.1	1.9
10-20	-	-	-	-	-	-	94.1	3.1	1.6	4.7	1.2
20-30	-	-	-	-	-	-	95.7	2.7	1	3.7	0.6
30-45	-	-	-	-	-	-	94.5	3.5	1.4	4.9	0.6
48-70	-	-	-	-	-	-	99.2	0.8	0	0.8	0

Water retention characteristics

Depth (cm)	Bulk density kg/dm³	Spec. Surf. Area m²/g	COLE cm/cm	Water disp. clay %	Clay % w/w
0-3	-	-	-	-	1
3-10	-	-	-	-	1.9
10-20	-	-	-	-	1.2
20-30	-	-	-	-	0.6
30-45	-	-	-	-	0.6
48-70	-	-	-	-	0

Chemical data

Depth (cm)	pH H2O	pHKCl	EC 1: 2.5 dS/m	CaCO3 % w/w	C % w/w	N %	C / N	Exch. Acid cmol(c)/kg	Exch. Al cmol(c)/kg	Ca cmol(c)/kg	Mg cmol(c)/kg	K cmol(c)/kg	Na cmol(c)/kg	Sum Cations cmol(c)/kg
0-3	4.6	3.4	0.04	-	0.87	0.03	29	-	-	0.3	0.1	0.1	0.1	0.6
3-10	5.3	4.5	0.02	-	0.64	0.03	21	-	-	0.3	0.0	0.1	0.0	0.4
10-20	5.4	4.6	0.02	-	0.35	0.03	12	-	-	0.3	0.0	0.1	0.0	0.4
20-30	5.4	4.6	0.02	-	0.22	0.03	7	-	-	0.3	0.0	0.1	0.0	0.4
30-45	5.7	4.6	0.01	-	0.05	0.02	3	-	-	0.3	0.0	0.2	0.0	0.5
48-70	6.3	5.2	0.01	-	0.04	0.01	4	-	-	0.0	0.0	0	0.0	0
-	3.8	3.2	-	-	34.1	1.12	30	-	-	1.8	0.8	0.5	0.1	3.2

Depth (cm)	Base sat. %	CEC soil cmol(c)/kg	CEC clay cmol(c)/kg	CEC org cmol(c)/kg	ECEC cmol(c)/kg	Al sat. %	ESP %
0-3	10	6.3	630	3.0	-	-	-
3-10	6	6.6	347	2.2	-	-	-
10-20	11	3.7	308	1.2	-	-	-
20-30	20	2.0	333	0.8	-	-	-
30-45	38	1.3	217	0.2	-	-	-
48-70	0	0.7	-	0.1	-	-	-
-	1	247	-	119.4	-	-	-

Elemental composition of the soil

Depth (cm)	Al2O3 % w/w	CaO % w/w	Fe2O3 % w/w	K2O % w/w	MgO % w/w	Na2O % w/w	SiO2 % w/w	TiO2 % w/w
0-3	10.9	0.76	0.7	4.14	0.06	-	80.6	0.13
3-10	13.0	1.28	2.8	3.49	0.52	-	74.9	0.41
10-20	13.2	1.32	2.6	3.61	0.52	-	75.9	0.38
20-30	12.6	1.28	2.5	3.70	0.49	-	74.6	0.35
30-45	12.7	1.27	2.2	3.71	0.47	-	76.3	0.31
48-70	13.4	1.33	2	4.17	0.51	-	76.6	0.24

Depth (cm)	Al2O3/Fe2O3 mol/mol	LOI % w/w	MnO2 % w/w	P2O5 % w/w	SiO2 / Al2O3 mol/mol	SiO2/Fe2O3 mol/mol	SiO2 / R mol/mol
0-3	24.4	1.7	0.01	0.00	12.5	306.5	12.1
3-10	7.3	2.4	0.05	0.13	9.8	71.2	8.6
10-20	8.0	1.5	0.05	0.09	9.8	77.7	8.7
20-30	7.9	1.1	0.04	0.06	10	79.4	8.9
30-45	9.1	0.8	0.04	0.05	10.2	92.3	9.2
48-70	10.5	0.6	0.04	0.05	9.7	102	8.9

Clay mineralogy

Depth (cm)	Chlorite	Feldspar	Gibbsite	Goethite	Halloysite	Hematite	Kaolinite	Mica / illite	Mixed-layer	Quartz	Smec	Vermiculite
3-10	-	weak to medium	-	-	-	-	weak to medium	-	-	very weak to weak	-	strong
20-30	very weak to weak	weak to medium	-	-	-	-	weak to medium	very weak to weak	-	very weak to weak	-	strong
30-45	weak to medium	weak to medium	-	-	-	-	weak to medium	very weak to weak	very weak to weak	weak to medium	-	weak to medium
48-70	weak to medium	weak to medium	-	-	-	-	weak to medium	very weak to weak	very weak to weak	very weak to weak	-	weak to medium

Sand mineralogy

Depth (cm)	Heavy Frac. sand % w/w	K-Feldspar % w/w	Light Fra. sand % w/w	Opaque % w/w	Plagioclase % w/w	Quartz % w/w
3-10	4.4	23	95.6	9	22	55
20-30	4.9	32	95.1	7	14	54
48-70	3.5	30	96.5	8	18	52

Minerals

Depth (cm)	Anatase % w/w	Andalusite % w/w	Apatite % w/w	Augite % w/w	Biotite % w/w	Hornblende (basaltic) % w/w
3-10	-	-	-	4	1	40
20-30	-	1	7	-	-	51
48-70	-	-	4	1	-	6

Depth (cm)	Brookite % w/w	Chloritic % w/w	Disthene % w/w	Epidote % w/w	Garnet % w/w	Glaucophane % w/w
3-10	-	-	-	13	-	-
20-30	-	-	-	17	-	-
48-70	-	-	1	9	-	-

Depth (cm)	Grenate % w/w	Grossular % w/w	Muscovite % w/w	Rutile % w/w	Sillimanite % w/w	Spinel % w/w
3-10	32	-	-	-	-	-
20-30	19	-	-	-	-	-
48-70	23	-	-	-	-	-

Profile description

O 0-2 cm	(5YR 2/2, dry)mosses,highly porous (>60 vol%),abrupt wavy boundary to,
E 2-4 cm	strong brown (7.5YR 5/8, dry)Description sand,single grain,loose,highly porous (>60 vol%),abrupt wavy boundary to,
Bs 4-7 cm	(7.5YR 4/8, dry)Description sand,single grain,loose,highly porous (>60 vol%),clear smooth boundary to,
B 7-40 cm	yellowish brown (10YR 5/4, dry)Description sand,single grain,loose,highly porous (>60 vol%),gradual smooth boundary to,
C 40-100 cm	very pale brown (10YR 7/4, dry)Description sand,single grain,loose,highly porous (>60 vol%),

Mode of accumulation or deposition of parent material	fluvio-glacial sediments
Remarks on Parent Materials	coarse, quartz&feld.
Texture of parent material (second entry)	sandy

Remarks on Land Use / Vegetation	groundcov.:lichens(Cladonia sp.)&Calluna
Status of vegetation; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	degraded
Major vegetation type; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	evergreen forest

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

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Reference soil Sweden 14: Regosol

Characteristics

Reference soil SE014: Regosols

Classification