Difference between revisions of "Mineral material (WRB)"
From Wicri Urban Soils
imported>Thierry Daunois (Created page with ''''Mineral material''' is one of the diagnostic materials used, in the WRB system, to discriminate some soils from others. ==Description== Mineral material : ==RSG in which min...') |
imported>Jacques Ducloy m (3 revisions imported) |
||
| (2 intermediate revisions by one other user not shown) | |||
| Line 2: | Line 2: | ||
==Description== | ==Description== | ||
| − | Mineral material : | + | Mineral material (from Celtic ''mine'', mineral), the soil properties are dominated by mineral components. |
| + | |||
| + | ==Diagnostic criteria== | ||
| + | Mineral material has one or both of the following : | ||
| + | * less than 20 percent organic carbon in the fine earth (by mass) if saturated with water for less than 30 consecutive days in most years without being drained | ||
| + | or : | ||
| + | * less than (12 + [clay percentage of the mineral fraction × 0.1]) percent organic carbon in the fine earth (by mass) | ||
| + | or : | ||
| + | * less than 18 percent organic carbon in the fine earth (by mass), if the mineral fraction has 60 percent or more clay | ||
==RSG in which mineral material can be observed== | ==RSG in which mineral material can be observed== | ||
| Line 13: | Line 21: | ||
* The [http://www.fao.org/ag/agl/agll/wrb/doc/wrb2007_corr.pdf FAO reference text], (2007 version) | * The [http://www.fao.org/ag/agl/agll/wrb/doc/wrb2007_corr.pdf FAO reference text], (2007 version) | ||
| + | |||
| + | [[Category:Diagnostic materials (WRB)]] | ||
Latest revision as of 19:24, 28 June 2017
Mineral material is one of the diagnostic materials used, in the WRB system, to discriminate some soils from others.
Contents
Description
Mineral material (from Celtic mine, mineral), the soil properties are dominated by mineral components.
Diagnostic criteria
Mineral material has one or both of the following :
- less than 20 percent organic carbon in the fine earth (by mass) if saturated with water for less than 30 consecutive days in most years without being drained
or :
- less than (12 + [clay percentage of the mineral fraction × 0.1]) percent organic carbon in the fine earth (by mass)
or :
- less than 18 percent organic carbon in the fine earth (by mass), if the mineral fraction has 60 percent or more clay
RSG in which mineral material can be observed
See also
- The FAO reference text, (2007 version)
