Difference between revisions of "Phaeozem"
From Wicri Urban Soils
imported>Thierry Daunois (Created page with 'A '''phaeozem''' (PH) can be defined through : * a mollic horizon and : * a base saturation (by 1 ''M'' NH<sub>4</sub>OAc) of 50 percent or more and a calcium carbonate-free soi...') |
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* no diagnostic horizons other than an albic, argic, cambic or vertic horizon, or a petrocalcic horizon<ref>A petrocalcic horizon may be present locally (e.g. the "Tosca" in Argentina). Such petrocalcic horizons are considered to be polygenetic and may best be handled for classification purposes at phase level (e.g. Luvic Phaeozem, Tosca phase)</ref>in the substratum | * no diagnostic horizons other than an albic, argic, cambic or vertic horizon, or a petrocalcic horizon<ref>A petrocalcic horizon may be present locally (e.g. the "Tosca" in Argentina). Such petrocalcic horizons are considered to be polygenetic and may best be handled for classification purposes at phase level (e.g. Luvic Phaeozem, Tosca phase)</ref>in the substratum | ||
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| + | ==Possible qualifiers== | ||
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| + | For each RSG, there are some possible prefix and suffix qualifiers : | ||
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| + | {|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> | ||
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| + | |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::]] | ||
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| + | <!-- ============================================= --> | ||
| + | |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 17:34, 12 October 2009
A phaeozem (PH) can be defined through :
- a mollic horizon
and :
- a base saturation (by 1 M NH4OAc) of 50 percent or more and a calcium carbonate-free soil matrix at least to a depth of 100 cm from the soil surface, or to a contrasting layer (lithic or paralithic contact, petrocalcic horizon) between 25 and 100 cm
and :
- no diagnostic horizons other than an albic, argic, cambic or vertic horizon, or a petrocalcic horizon[1]in the substratum
Possible qualifiers
For each RSG, there are some possible prefix and suffix qualifiers :
|
Prefix qualifiers |
| |
|
|
|
Source
- The FAO website
Notes
- ↑ A petrocalcic horizon may be present locally (e.g. the "Tosca" in Argentina). Such petrocalcic horizons are considered to be polygenetic and may best be handled for classification purposes at phase level (e.g. Luvic Phaeozem, Tosca phase)
