Attribute |
Details |
public string Abruptic |
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Abruptic (ap): Having an abrupt textural change within 100 cm of the soil surface.
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public string Aceric |
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Aceric (ae): Having a pH (1:1 in water) between 3.5 and 5 and jarosite mottles in some layer within100 cm of the soil surface (in Solonchaks only).
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public string Acric |
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Acric (ac): Having an argic horizon that has a CEC (by 1 M NH4OAc) of less than 24 cmolc kg-1clay in some part to a maximum depth of 50 cm below its upper limit, either startingwithin 100 cm of the soil surface or within 200 cm of the soil surface if the argic horizonis overlain by loamy sand or coarser textures throughout, and a base saturation (by 1 MNH4OAc) of less than 50 percent in the major part between 50 and 100 cm from the soil surface.
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public string Acroxic |
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Acroxic (ao): Having less than 2 cmolc kg-1 fine earth exchangeable bases plus 1 M KCl exchangeable Al3+ in one or more layers with a combined thickness of 30 cm or more within 100cm of the soil surface (in Andosols only).
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public string Albic |
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Albic (ab): Having an albic horizon starting within 100 cm of the soil surface.
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public string Alcalic |
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Alcalic (ax): Having a pH (1:1 in water) of 8.5 or more throughout within 50 cm of the soil surfaceor to continuous rock or a cemented or indurated layer, whichever is shallower.
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public string Alic |
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Alic (al): Having an argic horizon that has a CEC (by 1 M NH4OAc) of 24 cmolc kg-1 clay or more throughout or to a depth of 50 cm below its upper limit, whichever is shallower, either starting within 100 cm of the soil surface or within 200 cm of the soil surface if the argic horizon is overlain by loamy sand or coarser textures throughout, and a base saturation (by 1 M NH4OAc) of less than 50 percent in the major part between 50 and100 cm from the soil surface.
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public string Aluandic |
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Aluandic (aa): Having one or more layers, cumulatively 30 cm or more thick, with andic properties and an acid oxalate (pH 3) extractable silica content of less than 0.6 percent, and anAlpy1/Alox2 of 0.5 or more, within 100 cm of the soil surface (in Andosols only).
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public string Alumic |
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Alumic (au): Having an Al saturation (effective) of 50 percent or more in some layer between 50 and 100 cm from the surface.
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public string Andic |
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Andic (an): Having one or more layers, cumulatively 30 cm or more thick, with andic properties,within 100 cm of the soil surface.
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public string Anthraquic |
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Anthraquic (aq): Having an anthraquic horizon.
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public string Anthric |
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Anthric (am): Having an anthric horizon.
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public string Anthrotoxic |
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Anthrotoxic (atx): Having in some layer within 50 cm of the soil surface sufficiently high and persistent concentrations of organic or inorganic substances to markedly affect the health ofhumans who come in regular contact with the soil.
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public string Arenic |
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Arenic (ar): Having a texture of loamy fine sand or coarser in a layer, 30 cm or more thick, within 100 cm of the soil surface.
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public string Areninovic |
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Areninovic (anv): Having above the soil that is classified at the RSG level, a layer with recent sediments(new material), 5 cm or more and less than 50 cm thick, which has a texture of loamy fine sand or coarser in its major part.
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public string Aric |
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Aric (ai): Having only remnants of diagnostic horizons – disturbed by deep ploughing.
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public string Aridic |
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Aridic (ad): Having aridic properties without a takyric or yermic horizon.
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public string Arzic |
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Arzic (az): Having sulphate-rich groundwater in some layer within 50 cm of the soil surface during some time in most years and containing 15 percent or more gypsum averaged over a depth of 100 cm from the soil surface or to continuous rock or a cemented or indurated layer, whichever is shallower (in Gypsisols only).
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public string Brunic |
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Brunic (br): Having a layer, 15 cm or more thick, which meets criteria 2?4 of the cambic horizon but fails criterion 1, starting within 50 cm of the soil surface.
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public string Calcaric |
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Calcaric (ca): Having calcaric material between 20 and 50 cm from the soil surface or between 20cm and continuous rock or a cemented or indurated layer, whichever is shallower.
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public string Calcic |
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Calcic (cc): Having a calcic horizon or concentrations of secondary carbonates starting within100 cm of the soil surface.
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public string Cambic |
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Cambic (cm): Having a cambic horizon starting within 50 cm of the soil surface.
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public string Carbic |
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Carbic (cb): Having a spodic horizon that does not turn redder on ignition (in Podzols only).
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public string Carbonatic |
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Carbonatic (cn): Having a salic horizon with a soil solution (1:1 in water) with a pH of 8.5 or more and [HCO3-] > [SO42-] >> [Cl-] (in Solonchaks only).
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public string Chloridic |
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Chloridic (cl): Having a salic horizon with a soil solution (1:1 in water) with [Cl-] >> [SO42-] >> [HCO3-] (in Solonchaks only).
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public string Chromic |
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Chromic (cr): Having within 150 cm of the soil surface a subsurface layer, 30 cm or more thick, that has a Munsell hue redder than 7.5 YR or that has both, a hue of 7.5 YR and a chroma, moist, of more than 4.
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public string Clayic |
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Clayic (ce): Having a texture of clay in a layer, 30 cm or more thick, within 100 cm of the soil surface.
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public string Clayinovic |
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Clayinovic (cnv): Having above the soil that is classified at the RSG level, a layer with recent sediments (new material), 5cm or more and less than 50 cm thick, which has a texture of clay inits major part.
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public string Colluvic |
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Colluvic (co): Having colluvic material, 20cm or more thick, created by human-induced lateral movement.
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public string Cryic |
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Cryic (cy): Having a cryic horizon starting within 100 cm of the soil surface or a cryic horizon starting within 200cm of the soil surface with evidence of cryoturbation in some layerwithin 100 cm of the soil surface.
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public string Cutanic |
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Cutanic (ct): Having clay coatings in some parts of an argic horizon either starting within 100cm of the soil surface or within 200cm of the soil surface if the argic horizon is overlain by loamy sand or coarser textures throughout.
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public string Densic |
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Densic (dn): Having natural or artificial compaction within 50 cm of the soil surface to the extent that roots cannot penetrate.
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public string Drainic |
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Drainic (dr): Having a histic horizon that is drained artificially starting within 40 cm of the soil surface.
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public string Duric |
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Duric (du): Having a duric horizon starting within 100 cm of the soil surface.
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public string Dystric |
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Dystric (dy): Having a base saturation (by 1 M NH4OAc) of less than 50 percent in the major part between 20 and 100 cm from the soil surface or between 20 cm and continuous rock ora cemented or indurated layer, or, in Leptosols, in a layer, 5 cm or more thick, directly above continuous rock.
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public string Ecotoxic |
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Ecotoxic (etx): Having in some layer within 50 cm of the soil surface sufficiently high and persistent concentrations of organic or inorganic substances to markedly affect soil ecology, inparticular the populations of the mesofauna.
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public string Ekranic |
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Ekranic (ek): Having technic hard rock starting within 5 cm of the soil surface and covering 95 percent or more of the horizontal extent of a pedon (in Technosols only).
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public string Endoarenic |
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Endoarenic (arn): Having a texture of loamy fine sand or coarser in a layer, 30 cm or more thick, between 50 and 100 cm from the soil surface.1 Alpy: pyrophosphate-extractable aluminium, expressed as percent of the fine earth (0?2 mm) fraction on an oven-dried (105 °C) basis.2 Alox: acid oxalate-extractable aluminium (Blakemore, Searle and Daly, 1981), expressed as percent of the fine earth (0?2 mm) fraction on an oven-dried (105 °C) basis.3 Alpy: pyrophosphate-extractable aluminium, expressed as percent of the fine earth (0?2 mm) fraction onan oven-dried (105o C) basis.4 Alox: acid oxalate-extractable aluminium (Blakemore, Searle and Daly, 1981), expressed as percent of the fine earth (0?2 mm) fraction on an oven-dried (105 °C) basis.
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public string Endoclayic |
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Endoclayic (cen): Having a texture of clay in a layer, 30 cm or more thick, within 50 and 100 cm of the soil surface.
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public string Endoduric |
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Endoduric (nd): Having a duric horizon starting between 50 and 100 cm from the soil surface.
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public string Endodystric |
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Endodystric (ny): Having a base saturation (by 1 M NH4OAc) of less than 50 percent throughout between 50 and 100 cm from the soil surface.
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public string Endoeutric |
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Endoeutric (ne): Having a base saturation (by 1 M NH4OAc) of 50 percent or more throughout between 50 and 100 cm from the soil surface.
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public string Endofluvic |
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Endofluvic (nf): Having fluvic material in a layer, 25 cm or more thick, between 50 and 100 cm from the soil surface.
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public string Endogleyic |
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Endogleyic (ng): Having between 50 and 100 cm from the mineral soil surface in some parts reducing conditions and in 25 percent or more of the soil volume a gleyic colour pattern.
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public string Endoleptic |
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Endoleptic (nl): Having continuous rock starting between 50 and 100 cm from the soil surface.
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public string Endopetric |
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Endopetric (ptn): Having a strongly cemented or indurated layer starting between 50 and 100 cm from the soil surface.
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public string Endosalic |
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Endosalic (ns): Having a salic horizon starting between 50 and 100 cm from the soil surface.
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public string Endosiltic |
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Endosiltic (sln): Having a texture of silt, silt loam, silty clay loam or silty clay in a layer, 30 cm or more thick, within 50 and 100 cm of the soil surface.
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public string Endoskeletic |
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Endoskeletic (skn): Having 40 percent or more (by volume) gravel or other coarse fragments averaged over a depth between 50 and 100 cm from the soil surface.
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public string Endosodic |
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Endosodic (son): Having 15 percent or more exchangeable Na plus Mg on the exchange complex between 50 and 100 cm from the soil surface throughout.
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public string Endostagnic |
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Endostagnic (stn): Having between 50 and 100 cm from the mineral soil surface in some parts reducing conditions for some time during the year and in 25 percent or more of the soil volume, single or in combination, a stagnic colour pattern or an albic horizon.
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public string Entic |
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Entic (et): Not an albic horizon and a loose spodic horizon (in Podzols only).
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public string Epiarenic |
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Epiarenic (arp): Having a texture of loamy fine sand or coarser in a layer, 30 cm or more thick, within 50 cm of the soil surface.
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public string Epiclayic |
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Epiclayic (cep): Having a texture of clay in a layer, 30 cm or more thick, within 50 cm of the soil surface.
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public string Epidystric |
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Epidystric (ed): Having a base saturation (by 1 M NH4OAc) of less than 50 percent throughout between 20 and 50 cm from the soil surface
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public string Epieutric |
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Epieutric (ee): Having a base saturation (by 1 M NH4OAc) of 50 percent or more throughout between 20 and 50 cm from the soil surface.
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public string Epigleyic |
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Epigleyic (glp): Having within 50 cm of the mineral soil surface in some parts reducing conditions and in 25 percent or more of the soil volume a gleyic colour pattern.
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public string Epileptic |
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Epileptic (el): Having continuous rock starting within 50 cm of the soil surface.
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public string Epipetric |
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Epipetric (ptp): Having a strongly cemented or indurated layer starting within 50 cm of the soil surface.
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public string Episalic |
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Episalic (ea): Having a salic horizon starting within 50 cm of the soil surface.
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public string Episiltic |
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Episiltic (slp): Having a texture of silt, silt loam, silty clay loam or silty clay in a layer, 30 cm or more thick, within 50 cm of the soil surface.
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public string Episkeletic |
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Episkeletic (skp): Having 40 percent or more (by volume) gravel or other coarse fragments averaged over a depth of 50 cm from the soil surface.
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public string Epistagnic |
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Epistagnic (stn): Having within 50 cm of the mineral soil surface in some parts reducing conditions for some time during the year and in 25 percent or more of the soil volume, single or in combination, a stagnic colour pattern or an albic horizon.
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public string Escalic |
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Escalic (ec): Occurring in human-made terraces.
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public string Eutric |
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Eutric (eu): Having a base saturation (by 1 M NH4OAc) of 50 percent or more in the major part between 20 and 100 cm from the soil surface or between 20 cm and continuous rock or a cemented or indurated layer, or, in Leptosols, in a layer, 5 cm or more thick, directly above continuous rock.
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public string Eutrosilic |
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Eutrosilic (es): Having one or more layers, cumulatively 30 cm or more thick, with andic properties and a sum of exchangeable bases of 15 cmolc kg-1 fine earth or more within 100 cm ofthe surface (in Andosols only).
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public string Ferralic |
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Ferralic (fl): Having a ferralic horizon starting within 200 cm of the soil surface (in Anthrosols only) ,or ferralic properties in at least some layer starting within 100 cm of the soil surface (in other soils).
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public string Ferric |
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Ferric (fr): Having a ferric horizon starting within 100 cm of the soil surface.
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public string Fibric |
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Fibric (fi): Having, after rubbing, two-thirds or more (by volume) of the organic material consisting of recognizable plant tissue within 100 cm of the soil surface (in Histosolsonly).
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public string Floatic |
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Floatic (ft): Having organic material floating on water (in Histosols only).
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public string Fluvic |
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Fluvic (fv): Having fluvic material in a layer, 25 cm or more thick, within 100 cm of the soil surface.
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public string Folic |
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Folic (fo): Having a folic horizon starting within 40 cm of the soil surface.
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public string Fractipetric |
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Fractipetric (fp): Having a strongly cemented or indurated horizon consisting of fractured or broken clods with an average horizontal length of less than 10 cm, starting within 100 cm of the soil surface.
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public string Fractiplinthic |
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Fractiplinthic (fa): Having a petroplinthic horizon consisting of fractured or broken clods with an average horizontal length of less than 10 cm, starting within 100 cm of the soil surface.
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public string Fragic |
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Fragic (fg): Having a fragic horizon starting within 100 cm of the soil surface.
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public string Fulvic |
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Fulvic (fu): Having a fulvic horizon starting within 30 cm of the soil surface.
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public string Garbic |
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Garbic (ga): Having a layer, 20 cm or more thick within 100 cm of the soil surface, with 20 percent or more (by volume, by weighted average) artefacts containing 35 percent or more (by volume) organic waste materials (in Technosols only).
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public string Gelic |
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Gelic (ge): Having a layer with a soil temperature of 0 °C or less for two or more consecutive years starting within 200 cm of the soil surface.
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public string Gelistagnic |
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Gelistagnic (gt): Having temporary water saturation at the soil surface caused by a frozen subsoil.
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public string Geric |
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Geric (gr): Having geric properties in some layer within 100 cm of the soil surface.
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public string Gibbsic |
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Gibbsic (gi): Having a layer, 30 cm or more thick, containing 25 percent or more gibbsite in the fine earth fraction within 100 cm of the soil surface.
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public string Glacic |
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Glacic (gc): Having a layer, 30 cm or more thick, containing 75 percent (by volume) or more ice within 100 cm of the soil surface.
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public string Gleyic |
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Gleyic (gl): Having within 100 cm of the mineral soil surface in some parts reducing conditions and in 25 percent or more of the soil volume a gleyic colour pattern.
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public string Glossalbic |
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Glossalbic (gb): Showing tonguing of an albic into an argic or natric horizon.
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public string Glossic |
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Glossic (gs): Showing tonguing of a mollic or umbric horizon into an underlying layer.
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public string Greyic |
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Greyic (gz): Having Munsell colours with a chroma of 3 or less when moist, a value of 3 or less when moist and 5 or less when dry and uncoated silt and sand grains on structural faces within 5 cm of the mineral soil surface.
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public string Grumic |
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Grumic (gm): Having a soil surface layer with a thickness of 3 cm or more with a strong structure finer than very coarse granular (in Vertisols only).
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public string Gypsic |
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Gypsic (gy): Having a gypsic horizon starting within 100 cm of the soil surface.
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public string Gypsiric |
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Gypsiric (gp): Having a gypsiric material between 20 and 50 cm from the soil surface.
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public string Haplic |
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Haplic (ha): Having a typical expression of certain features (typical in the sense that there is no further or meaningful characterization) and only used if none of the preceding qualifiers applies.
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public string Hemic |
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Hemic (hm): Having, after rubbing, between two-thirds and one-sixth (by volume) of the organic material consisting of recognizable plant tissue within 100 cm from the soil surface (inHistosols only).
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public string Histic |
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Histic (hi): Having a histic horizon starting within 40 cm of the soil surface.
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public string Hortic |
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Hortic (ht): Having a hortic horizon.
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public string Humic |
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Humic (hu): Having the following organic carbon contents in the fine earth fraction as a weighted average in Ferralsols and Nitisols, 1.4 percent or more to a depth of 100 cm from the mineral soil surface; in Leptosols, 2 percent or more to a depth of 25 cm from the mineral soil surface; in other soils, 1 percent or more to a depth of 50 cm from the mineral soil surface.
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public string Hydragric |
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Hydragric (hg): Having an anthraquic horizon and an underlying hydragric horizon, the latter starting within 100 cm of the soil surface.
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public string Hydric |
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Hydric (hy): Having within 100 cm of the soil surface one or more layers with a combined thickness of 35 cm or more, which have a water retention at 1 500 kPa (in undried samples) of 100 percent or more (in Andosols only).
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public string Hydrophobic |
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Hydrophobic (hf): Water-repellent, i.e. water stands on a dry soil for the duration of 60 seconds or more (in Arenosols only).
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public string Hyperalbic |
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Hyperalbic (ha): Having an albic horizon starting within 50 cm of the soil surface and its lower boundary at a depth of 100 cm or more from the soil surface.
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public string Hyperalic |
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Hyperalic (hl): Having an argic horizon that has a silt to clay ratio of less than 0.6 and an Al saturation (effective) of 50 percent or more, throughout or to a depth of 50 cm below its upper limit, whichever is shallower (in Alisols only).
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public string Hypercalcic |
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Hypercalcic (hc): Having a calcic horizon with 50 percent or more (by mass) calcium carbonate equivalent (in Calcisols only).
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public string Hyperduric |
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Hyperduric (duh): Having a duric horizon with 50 percent or more (by volume) durinodes starting within 100 cm of the soil surface.
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public string Hyperdystric |
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Hyperdystric (hd): Having a base saturation (by 1 M NH4OAc) of less than 50 percent throughout between 20 and 100 cm from the soil surface, and less than 20 percent in some layer within 100 cm of the soil surface.
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public string Hypereutric |
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Hypereutric (he): Having a base saturation (by 1 M NH4OAc) of 50 percent or more throughout between 20 and 100 cm from the soil surface and 80 percent or more in some layer within 100 cm of the soil surface.
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public string Hyperferralic |
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Hyperferralic (flh): Having a Ferralic properties and a CEC1 (by 1 M NH4OAc) of less than 16 cmolc kg-1clay in at least some layer starting within 100 cm of the soil surface.
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public string Hyperferric |
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Hyperferric (frh): Having a ferric horizon with 40 percent or more of the volume discrete reddish to blackish nodules starting within 100 cm of the soil surface.
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public string Hypergypsic |
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Hypergypsic (hp): Having a gypsic horizon with 50 percent or more (by mass) gypsum (in Gypsisols only).
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public string Hyperhumic |
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Hyperhumic (huh): Having an organic carbon content of 5 percent or more as a weighted average in the fine earth fraction to a depth of 50 cm from the mineral soil surface.
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public string Hyperochric |
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Hyperochric (ho): Having a mineral topsoil layer, 5 cm or more thick, with a Munsell value, dry, of 5.5 or more that turns darker on moistening, an organic carbon content of less than 0.4 percent, a platy structure in 50 percent or more of the volume, and a surface crust.
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public string Hypersalic |
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Hypersalic (hs): Having an ECe of 30 dS m-1 or more at 25 °C in some layer within 100 cm of the soil surface.
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public string Hyperskeletic |
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Hyperskeletic (hk): Containing less than 20 percent (by volume) fine earth averaged over a depth of 75 cm from the soil surface or to continuous rock, whichever is shallower.
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public string Hyperthionic |
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Hyperthionic (tih): Having a thionic horizon starting within 100 cm of the soil surface and a pH (1:1 in water) less than 3.5.
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public string Hypocalcic |
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Hypocalcic (wc): Having a calcic horizon with a calcium carbonate equivalent content in the fine earth fraction of less than 25 percent and starting within 100 cm of the soil surface (in Calcisols only).
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public string Hypoferralic |
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Hypoferralic (flw): Having in a layer, 30 cm or more thick, within 100 cm of the soil surface a CEC (by1 M NH4OAc) of less than 4 cm olc kg-1 fine earth and a Munsell chroma, moist, of 5 or more or a hue redder than 10 YR (in Arenosols only).
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public string Hypogypsic |
Notes:
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Hypogypsic (wg): Having a gypsic horizon with a gypsum content in the fine earth fraction of less than 25 percent and starting within 100 cm of the soil surface (in Gypsisols only).
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public string Hypoluvic |
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Hypoluvic (wl): Having an absolute clay increase of 3 percent or more within 100 cm of the soil surface (in Arenosols only).
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public string Hyposalic |
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Hyposalic (ws): Having an ECe of 4 dS m-1 or more at 25 °C in some layer within 100 cm of the soil surface.
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public string Hyposodic |
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Hyposodic (sow): Having 6 percent or more exchangeable Na on the exchange complex in a layer, 20 cm or more thick, within 100 cm of the soil surface.
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public string Irragric |
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Irragric (ir): Having an irragric horizon.
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public string Lamellic |
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Lamellic (ll): Having clay lamellae with a combined thickness of 15 cm or more within 200 cm of the soil surface.
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public string Laxic |
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Laxic (la): Having a bulk density of less than 0.8 kg dm-3, in a mineral soil layer, 20 cm or more thick, starting within 75 cm of the soil surface.
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public string Leptic |
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Leptic (le): Having continuous rock starting within 100 cm of the soil surface.
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public string Lignic |
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Lignic (lg): Having inclusions of intact wood fragments, which make up one-quarter or more of the soil volume, within 50 cm of the soil surface (in Histosols only).
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public string Limnic |
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Limnic (lm): Having limnic material, cumulatively 10 cm or more thick, within 50 cm of the soil surface.
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public string Linic |
Notes:
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Linic (lc): Having a continuous, very slowly permeable to impermeable constructed geomembrane of any thickness starting within 100 cm of the soil surface.
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public string Lithic |
Notes:
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Lithic (li): Having continuous rock starting within 10 cm of the soil surface (in Leptosols only).
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public string Lixic |
Notes:
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Lixic (lx): Having an argic horizon that has a CEC (by 1 M NH4OAc) of 24 cmolc kg-1 clay or more in some part to a maximum depth of 50 cm below its upper limit, either starting within 100 cm of the soil surface or within 200 cm of the soil surface if the argic horizonis overlain by loamy sand or coarser textures throughout, and a base saturation (by 1 MNH4OAc) of 50 percent or more in the major part between 50 and 100 cm from the soil surface.
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public string Luvic |
Notes:
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Luvic (lv): Having an argic horizon that has a CEC of 24 cmolc kg-1 clay or more throughout or to a depth of 50 cm below its upper limit, whichever is shallower, either starting within 100 cm of the soil surface or within 200 cm of the soil surface if the argic horizon is overlain by loamy sand or coarser textures throughout, and a base saturation (by 1 MNH4OAc) of 50 percent or more in the major part between 50 and 100 cm from thesoil surface.
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public string Magnesic |
Notes:
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Magnesic (mg): Having an exchangeable Ca to Mg ratio of less than 1 in the major part within 100 cm of the soil surface or to continuous rock or a cemented or indurated layer, whicheveris shallower.
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public string Manganiferric |
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Manganiferric (mf): Having a ferric horizon starting within 100 cm of the soil surface in which half or more of the nodules or mottles are black.
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public string Mazic |
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Mazic (mz): Massive and hard to very hard in the upper 20 cm of the soil (in Vertisols only).
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public string Melanic |
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Melanic (ml): Having a melanic horizon starting within 30 cm of the soil surface (in Andosols only).
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public string Mesotrophic |
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Mesotrophic (ms): Having a base saturation (by 1 M NH4OAc) of less than 75 percent at a depth of 20 cm from the soil surface (in Vertisols only).
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public string Mollic |
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Mollic (mo): Having a mollic horizon.
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public string Molliglossic |
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Molliglossic (mi): Showing tonguing of a mollic horizon into an underlying layer.
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public string Natric |
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Natric (na): Having a natric horizon starting within 100 cm of the soil surface.
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public string Nitic |
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Nitic (ni): Having a nitic horizon starting within 100 cm of the soil surface.
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public string Novic |
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Novic (nv): Having above the soil that is classified at the RSG level, a layer with recent sediments (new material), 5 cm or more and less than 50 cm thick.
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public string Nudilithic |
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Nudilithic (nt): Having continuous rock at the soil surface (in Leptosols only).
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public string Nudiyermic |
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Nudiyermic (yes): Having a yermic horizon without a desert pavement.
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public string Ombric |
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Ombric (om): Having a histic horizon saturated predominantly with rainwater starting within 40 cm of the soil surface (in Histosols only).
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public string Ornithic |
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Ornithic (oc): Having a layer 15 cm or more thick with ornithogenic material starting within 50 cm of the soil surface.
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public string Orthodystric |
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Orthodystric (dyo): Having a base saturation (by 1 M NH4OAc) of less than 50 percent throughout between 20 and 100 cm from the soil surface.
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public string Orthoeutric |
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Orthoeutric (euo): Having a base saturation (by 1 M NH4OAc) of 50 percent or more throughout between 20 and 100 cm from the soil surface.
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public string Orthothionic |
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Orthothionic (tio): Having a thionic horizon starting within 100 cm of the soil surface and a pH (1:1 inwater) between 3.5 and 4.0.
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public string Ortsteinic |
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Ortsteinic (os): Having a cemented spodic horizon (ortstein) (in Podzols only).
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public string Oxyaquic |
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Oxyaquic (oa): Saturated with oxygen-rich water during a period of 20 or more consecutive days and not a gleyic or stagnic colour pattern in some layer within 100 cm of the soil surface.
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public string Pachic |
Notes:
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Pachic (ph): Having a mollic or umbric horizon 50 cm or more thick.
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public string Pellic |
Notes:
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Pellic (pe): Having in the upper 30 cm of the soil a Munsell value, moist, of 3.5 or less and achroma, moist, of 1.5 or less (in Vertisols only).
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public string Petric |
Notes:
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Petric (pt): Having a strongly cemented or indurated layer starting within 100 cm of the soil surface.
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public string Petrocalcic |
Notes:
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Petrocalcic (pc): Having a petrocalcic horizon starting within 100 cm of the soil surface.
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public string Petroduric |
Notes:
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Petroduric (pd): Having a petroduric horizon starting within 100 cm of the soil surface.
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public string Petrogleyic |
Notes:
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Petrogleyic (py): Having a layer, 10 cm or more thick, with an oximorphic colour pattern1, 15 percent or more (by volume) of which is cemented (bog iron), within 100 cm of the surface.
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public string Petrogypsic |
Notes:
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Petrogypsic (pg): Having a petrogypsic horizon starting within 100 cm of the soil surface.
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public string Petroplinthic |
Notes:
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Petroplinthic (pp): Having a petroplinthic horizon starting within 100 cm of the soil surface.
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public string Petrosalic |
Notes:
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Petrosalic (ps): Having within 100 cm of the soil surface, a layer, 10 cm or more thick, which is cemented by salts more soluble than gypsum.
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public string Phytotoxic |
Notes:
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Phytotoxic (ptx): Having in some layer within 50 cm of the soil surface sufficiently high or low concentrations of ions other than Al, Fe, Na, Ca and Mg, to markedly affect plantgrowth.
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public string Pisoplinthic |
Notes:
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Pisoplinthic (px): Having a pisoplinthic horizon starting within 100 cm of the soil surface.
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public string Placic |
Notes:
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Placic (pi): Having within 100 cm of the soil surface, an iron pan, between 1 and 25 mm thick, that is continuously cemented by a combination of organic matter, Fe and/or Al.
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public string Plaggic |
Notes:
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Plaggic (pa): Having a plaggic horizon.
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public string Plinthic |
Notes:
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Plinthic (pl): Having a plinthic horizon starting within 100 cm of the soil surface.
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public string Posic |
Notes:
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Posic (po): Having a zero or positive charge (pHKCl - pH water, both 1:1) in a layer, 30 cm or morethick, starting within 100 cm of the soil surface (in Plinthosols and Ferralsols only).
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public string Profondic |
Notes:
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Profondic (pf): Having an argic horizon in which the clay content does not decrease by 20 percent or more (relative) from its maximum within 150 cm of the soil surface.
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public string Protic |
Notes:
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Protic (pr): Showing no soil horizon development (in Arenosols only).
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public string Protothionic |
Notes:
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Protothionic (tip): Having a layer with sulphidic material, 15 cm or more thick, starting within 100 cm of the soil surface.
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public string Puffic |
Notes:
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Puffic (pu): Having a crust pushed up by salt crystals (in Solonchaks only).
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public string Reductaquic |
Notes:
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Reductaquic (ra): Saturated with water during the thawing period and at some time of the year reducing conditions above a cryic horizon and within 100 cm of the soil surface (in Cryosolsonly).
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public string Reductic |
Notes:
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Reductic (rd): Having reducing conditions in 25 percent or more of the soil volume within 100 cm of the soil surface caused by gaseous emissions, e.g. methane or carbon dioxide (inTechnosols only).
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public string Regic |
Notes:
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Regic (rg): Not having buried horizons (in Anthrosols only).
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public string Rendzic |
Notes:
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Rendzic (rz): Having a mollic horizon that contains or immediately overlies calcaric materials containing 40 percent or more calcium carbonate equivalent.
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public string Rheic |
Notes:
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Rheic (rh): Having a histic horizon saturated predominantly with groundwater or flowing surface water starting within 40 cm of the soil surface (in Histosols only).
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public string Rhodic |
Notes:
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Rhodic (ro): Having within 150 cm of the soil surface a subsurface layer, 30 cm or more thick, witha Munsell hue redder than 5 YR (3.5 YR or redder), a value, moist, of less than 3.5 and a value, dry, no more than one unit higher than the moist value.
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public string Rubic |
Notes:
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Rubic (ru): Within 100 cm of the soil surface a subsurface layer, 30 cm or more thick, with a Munsell hue redder than 10 YR or a chroma, moist, of 5 or more (in Arenosols only).
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public string Ruptic |
Notes:
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Ruptic (rp): Having a lithological discontinuity within 100 cm of the soil surface.
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public string Rustic |
Notes:
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Rustic (rs): Having a spodic horizon that turns redder on ignition (in Podzols only).
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public string Salic |
Notes:
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Salic (sz): Having a salic horizon starting within 100 cm of the soil surface.
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public string Sapric |
Notes:
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Sapric (sa): Having, after rubbing, less than one-sixth (by volume) of the organic material consisting of recognizable plant tissue within 100 cm of the soil surface (in Histosols only).
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public string Silandic |
Notes:
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Silandic (sn): Having one or more layers, cumulatively 30 cm or more thick, with andic properties and an acid oxalate (pH 3) extractable silica (Siox) content of 0.6 percent or more, or an Alpy to Alox ratio of less than 0.5 within 100 cm of the soil surface (in Andosols only). Thaptosilandic (snb) Having one or more buried layers, cumulatively 30 cm or more thick, with andic properties and an acid oxalate (pH 3) extractable silica (Siox) content of 0.6 percent or more, or an Alpy to Alox ratio of less than 0.5 within 100 cm of the soil surface.
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public string Siltic |
Notes:
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Siltic (sl): Having a texture of silt, silt loam, silty clay loam or silty clay in a layer, 30 cm or more thick, within 100 cm of the soil surface.
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public string Siltinovic |
Notes:
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Siltinovic (snv): Having above the soil that is classified at the RSG level, a layer with recent sediments (new material), 5 cm or more and less than 50 cm thick, which has a texture of silt, silt loam, silty clay loam or silty clay in its major part.
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public string Skeletic |
Notes:
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Skeletic (sk): 40 percent or more (by volume) gravel or other coarse fragments averaged over a depth of 100 cm from the soil surface or to continuous rock or a cemented or indurated layer,whichever is shallower.
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public string Sodic |
Notes:
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Sodic (so): Having 15 percent or more exchangeable Na plus Mg on the exchange complex within 50 cm of the soil surface throughout.
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public string Solodic |
Notes:
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Solodic (sc): Having a layer, 15 cm or more thick within 100 cm of the soil surface, with the columnar or prismatic structure of the natric horizon, but lacking its sodium saturation requirements.
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public string Sombric |
Notes:
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Sombric (sm): Having a sombric horizon starting within 150 cm of the soil surface.
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public string Spodic |
Notes:
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Spodic (sd): Having a spodic horizon starting within 200 cm of the mineral soil surface.
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public string Spolic |
Notes:
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Spolic (sp): Having a layer, 20 cm or more thick within 100 cm of the soil surface, with 20 percent or more (by volume, by weighted average) artefacts containing 35 percent or more (byvolume) of industrial waste (mine spoil, dredgings, rubble, etc.) (in Technosols only).
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public string Stagnic |
Notes:
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Stagnic (st): Having within 100 cm of the mineral soil surface in some parts reducing conditions for some time during the year and in 25 percent or more of the soil volume, single or in combination, a stagnic colour pattern or an albic horizon.
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public string Subaquatic |
Notes:
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Subaquatic (sq): Being permanently submerged under water not deeper than 200 cm.
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public string Sulphatic |
Notes:
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Sulphatic (su): Having a salic horizon with a soil solution (1:1 in water) with [SO42-] >> [HCO3-] > [Cl-] (in Solonchaks only).
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public string Takyric |
Notes:
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Takyric (ty): Having a takyric horizon.
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public string Technic |
Notes:
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Technic (te): Having 10 percent or more (by volume, by weighted average) artefacts in the upper 100 cm from the soil surface or to continuous rock or a cemented or indurated layer,whichever is shallower.
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public string Tephric |
Notes:
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Tephric (tf): Having tephric material to a depth of 30 cm or more from the soil surface or to continuous rock, whichever is shallower.
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public string Terric |
Notes:
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Terric (tr): Having a terric horizon.
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public string Thaptaluandic |
Notes:
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Thaptaluandic (aab): Having one or more buried layers, cumulatively 30 cm or more thick, with andic properties and an acid oxalate (pH 3) extractable silica content of less than 0.6 percent, or an Alpy3/Alox4 of 0.5 or more, within 100 cm of the soil surface.
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public string Thaptandic |
Notes:
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Thaptandic (ba): Having one or more buried layers, cumulatively 30 cm or more thick, with andic properties, within 100 cm of the soil surface.
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public string Thaptofolic |
Notes:
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Thaptofolic (fob): Having a buried folic horizon starting between 40 and 100 cm from the soil surface.
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public string Thaptohistic |
Notes:
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Thaptohistic (hib): Having a buried histic horizon starting between 40 and 100 cm from the soil surface.
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public string Thaptovitric |
Notes:
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Thaptovitric (bv): Having one or more buried layers, cumulatively 30 cm or more thick, with vitric properties, within 100 cm of the soil surface.
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public string Thionic |
Notes:
|
Thionic (ti): Having a thionic horizon or a layer with sulphidic material, 15 cm or more thick, starting within 100 cm of the soil surface.
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public string Thixotropic |
Notes:
|
Thixotropic (tp): Having in some layer within 50 cm of the soil surface material that changes, under pressure or by rubbing, from a plastic solid into a liquefied stage and back into the solid condition.
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public string Tidalic |
Notes:
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Tidalic (td): Being flooded by tidewater but not covered by water at mean low tide.
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public string Toxic |
Notes:
|
Toxic (tx): Having in some layer within 50 cm of the soil surface toxic concentrations of organic or inorganic substances other than ions of Al, Fe, Na, Ca and Mg.
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public string Transportic |
Notes:
|
Transportic (tn): Having a layer, 30 cm or more thick, with solid or liquid material that has been moved from a source area outside the immediate vicinity of the soil by intentional humanactivity, usually with the aid of machinery, and without substantial reworking ordisplacement by natural forces
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public string Turbic |
Notes:
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Turbic (tu): Having cryoturbation features (mixed material, disrupted soil horizons, involutions,organic intrusions, frost heave, separation of coarse from fine materials, cracks orpatterned ground) at the soil surface or above a cryic horizon and within 100 cm of the soil surface.
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public string Umbric |
Notes:
|
Umbric (um): Having an umbric horizon.
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|
public string Umbriglossic |
Notes:
|
Umbriglossic (ug): Showing tonguing of an umbric horizon into an underlying layer.
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|
public string Urbic |
Notes:
|
Urbic (ub): Having a layer, 20 cm or more thick within 100 cm of the soil surface, with 20 percent or more (by volume, by weighted average) artefacts containing 35 percent or more (by volume) of rubble and refuse of human settlements (in Technosols only).
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|
public string Vermic |
Notes:
|
Vermic (vm): Having 50 percent or more (by volume, by weighted average) of worm holes, casts, or filled animal burrows in the upper 100 cm of the soil or to continuous rock or acemented or indurated layer, whichever is shallower.
|
|
public string Vertic |
Notes:
|
Vertic (vr): Having a vertic horizon or vertic properties starting within 100 cm of the soil surface.
|
|
public string Vetic |
Notes:
|
Vetic (vt): Having an ECEC (sum of exchangeable bases plus exchangeable acidity in 1 M KCl) of less than 6 cmolc kg-1 clay in some subsurface layer within 100 cm of the soil surface.
|
|
public string Vitric |
Notes:
|
Vitric (vi): Having one or more layers, cumulatively 30 cm or more thick, with vitric properties, within 100 cm of the soil surface.
|
|
public string Voronic |
Notes:
|
Voronic (vo): Having a voronic horizon (in Chernozems only).
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|
public string Xanthic |
Notes:
|
Xanthic (xa): Having a ferralic horizon that has in a subhorizon, 30 cm or more thick within 150 cm of the soil surface, a Munsell hue of 7.5 YR or yellower and a value, moist, of 4 or more and a chroma, moist, of 5 or more.
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|
public string Yermic |
Notes:
|
Yermic (ye): Having a yermic horizon, including a desert pavement.
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|
public string Zootoxic |
Notes:
|
Zootoxic (ztx): Having in some layer within 50 cm of the soil surface sufficiently high and persistent concentrations of organic or inorganic substances to markedly affect the health of animals, including humans, that ingest plants grown on these soils.
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