Cambisol MX
A Cambisol, Vertic Endogelic (argillic dystric ruptic) from the Veracruz area of Mexico. (Photo and classification courtesy of Pablo Leautaud).
For more information about Pablo's Flickr site, visit:
www.flickr.com/photos/pleautaud/
Cambisols (from the WRB-World Reference Base for Soil Resources 2006) combine soils with at least an incipient subsurface soil formation. Transformation of parent material is evident from structure formation and mostly brownish discoloration, increasing clay percentage, and/or carbonate removal. Other soil classification systems refer to many Cambisols as: Braunerden (Germany), Sols bruns(France), Brown soils/Brown Forest soils (older US systems), or Burozems(Russian Federation). FAO coined the name Cambisols, adopted by Brazil (Cambissolos); US Soil Taxonomy classifies most of these soils as Inceptisols.
Vertic soils havve a vertic horizon or vertic properties starting within 100 cm of the soil surface. Soil material with vertic properties has one or both of the following:
1. 30 percent or more clay throughout a thickness of 15 cm or more and one or both of the following:
a. slickensides or wedge-shaped aggregates; or
b. cracks that open and close periodically and are 1 cm or more wide; or
2. a COLE of 0.06 or more averaged over depth of 100 cm from the soil surface.
Endogleyic soils have between 50 and 100 cm from the mineral soil surface in some parts reducing conditions and in 25 percent or more of the soil volume a gleyic color pattern.
(Ruptic) Having a lithological discontinuity within 100 cm of the soil surface.
(Dystric) Having a base saturation (by 1 M NH4OAc) of less than 50 percent in the major part between 20 and 100 cm from the soil surface or between 20 cm and continuous rock or a cemented or indurated layer, or, in Leptosols, in a layer, 5 cm or more thick, directly above continuous rock.
For more information about soil classification using the WRB system, visit:
www.fao.org/3/i3794en/I3794en.pdf
For more information about describing soils, visit:
www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052523...
For additional information about soil classification using Soil Taxonomy, visit:
Cambisol MX
A Cambisol, Vertic Endogelic (argillic dystric ruptic) from the Veracruz area of Mexico. (Photo and classification courtesy of Pablo Leautaud).
For more information about Pablo's Flickr site, visit:
www.flickr.com/photos/pleautaud/
Cambisols (from the WRB-World Reference Base for Soil Resources 2006) combine soils with at least an incipient subsurface soil formation. Transformation of parent material is evident from structure formation and mostly brownish discoloration, increasing clay percentage, and/or carbonate removal. Other soil classification systems refer to many Cambisols as: Braunerden (Germany), Sols bruns(France), Brown soils/Brown Forest soils (older US systems), or Burozems(Russian Federation). FAO coined the name Cambisols, adopted by Brazil (Cambissolos); US Soil Taxonomy classifies most of these soils as Inceptisols.
Vertic soils havve a vertic horizon or vertic properties starting within 100 cm of the soil surface. Soil material with vertic properties has one or both of the following:
1. 30 percent or more clay throughout a thickness of 15 cm or more and one or both of the following:
a. slickensides or wedge-shaped aggregates; or
b. cracks that open and close periodically and are 1 cm or more wide; or
2. a COLE of 0.06 or more averaged over depth of 100 cm from the soil surface.
Endogleyic soils have between 50 and 100 cm from the mineral soil surface in some parts reducing conditions and in 25 percent or more of the soil volume a gleyic color pattern.
(Ruptic) Having a lithological discontinuity within 100 cm of the soil surface.
(Dystric) Having a base saturation (by 1 M NH4OAc) of less than 50 percent in the major part between 20 and 100 cm from the soil surface or between 20 cm and continuous rock or a cemented or indurated layer, or, in Leptosols, in a layer, 5 cm or more thick, directly above continuous rock.
For more information about soil classification using the WRB system, visit:
www.fao.org/3/i3794en/I3794en.pdf
For more information about describing soils, visit:
www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052523...
For additional information about soil classification using Soil Taxonomy, visit: