Difference between revisions of "Chernozem"
From Wicri Urban Soils
imported>Thierry Daunois (Created page with '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 s...') |
imported>Thierry Daunois |
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and : | and : | ||
* no uncoated silt and sand grains on structural ped surfaces | * no uncoated silt and sand grains on structural ped surfaces | ||
+ | |||
+ | ==Possible qualifiers== | ||
+ | |||
+ | For each RSG, there are some possible prefix and suffix qualifiers : | ||
+ | |||
+ | {|width="60%" cellspacing="0" cellpadding="0" style="margin-top:0.6em" | ||
+ | |- | ||
+ | |width="50%" valign="middle" style="border:1px solid #CCF7CC;background:#EEFFEE;padding:7px;text-align:center"| | ||
+ | <big>'''Prefix qualifiers'''</big><br/> | ||
+ | |style="padding:4px;font-size:1px"| | ||
+ | |width="50%" valign="middle" style="border:1px solid #DDDDF7;background:#F7F7FF;padding:7px"| | ||
+ | <center><big>'''Suffix qualifiers'''</big></center> | ||
+ | |- | ||
+ | |style="font-size:0.6em;line-height:0.6em"| | ||
+ | |- | ||
+ | |valign="top" class="cadregris" style="margin-bottom:0.6em;border:1px solid #AAAAAA;background-color:#FCFCFC;padding:7px"| | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | * [[Has for prefix qualifier::]] | ||
+ | |||
+ | <!-- ============================================= --> | ||
+ | |style="font-size:0.6em;line-height:0.6em"| | ||
+ | | 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::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | * [[Has for suffix qualifier::]] | ||
+ | |} | ||
==Source== | ==Source== |
Revision as of 17:33, 12 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 :
- 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