Difference between revisions of "Chernozem"
From Wicri Urban Soils
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imported>Jacques Ducloy m (8 revisions imported) |
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A '''chernozem''' (CH) can be defined through : | A '''chernozem''' (CH) can be defined through : | ||
| − | * a mollic horizon with a moist chroma of 2 or less if the texture is finer than sandy loam, or less than 3.5 if the texture is sandy loam or coarser, both to a depth of at least 20 cm, or having these chromas directly below any plough layer | + | * a [[Has for diagnostic horizon::Mollic horizon (WRB)|mollic horizon]] with a moist chroma of 2 or less if the texture is finer than sandy loam, or less than 3.5 if the texture is sandy loam or coarser, both to a depth of at least 20 cm, or having these chromas directly below any plough layer |
and : | and : | ||
| − | * concentrations of secondary carbonates starting within 50 cm of the lower limit of the Ah horizon but within 200 cm from the soil surface | + | * concentrations of [[Has for diagnostic property::Secondary carbonates (WRB)|secondary carbonates]] starting within 50 cm of the lower limit of the Ah horizon but within 200 cm from the soil surface |
and : | and : | ||
| − | * no petrocalcic horizon between 25 and 100 cm from the soil surface | + | * no [[Has for diagnostic horizon::Petrocalcic horizon (WRB)|petrocalcic horizon]] between 25 and 100 cm from the soil surface |
and : | and : | ||
* no secondary gypsum | * no secondary gypsum | ||
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| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Voronic (WRB qualifier)|Voronic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Vermic (WRB qualifier)|Vermic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Technic (WRB qualifier)|Technic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Leptic (WRB qualifier)|Leptic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Vertic (WRB qualifier)|Vertic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Endofluvic (WRB qualifier)|Endofluvic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Endosalic (WRB qualifier)|Endosalic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Gleyic (WRB qualifier)|Gleyic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Vitric (WRB qualifier)|Vitric]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Andic (WRB qualifier)|Andic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Stagnic (WRB qualifier)|Stagnic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Petrogypsic (WRB qualifier)|Petrogypsic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Gypsic (WRB qualifier)|Gypsic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Petroduric (WRB qualifier)|Petroduric]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Duric (WRB qualifier)|Duric]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Petrocalcic (WRB qualifier)|Petrocalcic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Calcic (WRB qualifier)|Calcic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Luvic (WRB qualifier)|Luvic]] |
| − | * [[Has for prefix qualifier::]] | + | * [[Has for prefix qualifier::Haplic (WRB qualifier)|Haplic]] |
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| valign="top" class="cadregris" style="margin-bottom:0.6em;border:1px solid #AAAAAA;background-color:#FCFCFC;padding:7px"| | | valign="top" class="cadregris" style="margin-bottom:0.6em;border:1px solid #AAAAAA;background-color:#FCFCFC;padding:7px"| | ||
| − | * [[Has for suffix qualifier::]] | + | * [[Has for suffix qualifier::Anthric (WRB qualifier)|Anthric]] |
| − | * [[Has for suffix qualifier::]] | + | * [[Has for suffix qualifier::Glossic (WRB qualifier)|Glossic]] |
| − | * [[Has for suffix qualifier::]] | + | * [[Has for suffix qualifier::Tephric (WRB qualifier)|Tephric]] |
| − | * [[Has for suffix qualifier::]] | + | * [[Has for suffix qualifier::Sodic (WRB qualifier)|Sodic]] |
| − | * [[Has for suffix qualifier::]] | + | * [[Has for suffix qualifier::Pachic (WRB qualifier)|Pachic]] |
| − | * [[Has for suffix qualifier::]] | + | * [[Has for suffix qualifier::Oxyaquic (WRB qualifier)|Oxyaquic]] |
| − | * [[Has for suffix qualifier::]] | + | * [[Has for suffix qualifier::Greyic (WRB qualifier)|Greyic]] |
| − | * [[Has for suffix qualifier::]] | + | * [[Has for suffix qualifier::Densic (WRB qualifier)|Densic]] |
| − | * [[Has for suffix qualifier::]] | + | * [[Has for suffix qualifier::Skeletic (WRB qualifier)|Skeletic]] |
| − | * [[Has for suffix qualifier:: | + | * [[Has for suffix qualifier::Arenic (WRB qualifier)|Arenic]] |
| − | + | * [[Has for suffix qualifier::Siltic (WRB qualifier)|Siltic]] | |
| − | * [[Has for suffix qualifier:: | + | * [[Has for suffix qualifier::Clayic (WRB qualifier)|Clayic]] |
| − | + | * [[Has for suffix qualifier::Novic (WRB qualifier)|Novic]] | |
| − | * [[Has for suffix qualifier:: | ||
| − | |||
| − | * [[Has for suffix qualifier:: | ||
| − | |||
|} | |} | ||
Latest revision as of 19:15, 28 June 2017
A chernozem (CH) can be defined through :
- a mollic horizon with a moist chroma of 2 or less if the texture is finer than sandy loam, or less than 3.5 if the texture is sandy loam or coarser, both to a depth of at least 20 cm, or having these chromas directly below any plough layer
and :
- concentrations of secondary carbonates starting within 50 cm of the lower limit of the Ah horizon but within 200 cm from the soil surface
and :
- no petrocalcic horizon between 25 and 100 cm from the soil surface
and :
- no secondary gypsum
and :
- no uncoated silt and sand grains on structural ped surfaces
Possible qualifiers
For each RSG, there are some possible prefix and suffix qualifiers :
|
Prefix qualifiers |
| |
Source
- The FAO website
