Difference between revisions of "Chernozem"

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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 [[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 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 [[Petrocalcic horizon (WRB)|petrocalcic horizon]] between 25 and 100 cm from the soil surface
 
and :
 
and :
 
* no secondary gypsum
 
* no secondary gypsum

Revision as of 11:24, 21 October 2009

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 :

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

 
Suffix qualifiers
 
 

Source

fr:Chernozem