Redoximorphic Features Redoximorphic Features and Hydric Soils and Hydric Soils NC STATE NC STATE UNIVERSITY UNIVERSITY DEPARTMENT of DEPARTMENT of SOIL SCIENCE SOIL SCIENCE NC STATE NC STATE UNIVERSITY UNIVERSITY DEPARTMENT of DEPARTMENT of SOIL SCIENCE SOIL SCIENCE NC STATE NC STATE UNIVERSITY UNIVERSITY DEPARTMENT of DEPARTMENT of SOIL SCIENCE SOIL SCIENCE NC STATE NC STATE UNIVERSITY UNIVERSITY DEPARTMENT of DEPARTMENT of SOIL SCIENCE SOIL SCIENCE
NC STATE UNIVERSITY DEPARTMENT of SOIL SCIENCE. NC STATE UNIVERSITY DEPARTMENT of SOIL SCIENCE. NC STATE UNIVERSITY DEPARTMENT of SOIL SCIENCE. NC STATE UNIVERSITY DEPARTMENT of SOIL SCIENCE. Redoximorphic Features and Hydric Soils. NC STATE UNIVERSITY - PowerPoint PPT Presentation
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Redoximorphic Features Redoximorphic Features and Hydric Soilsand Hydric Soils
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Redoximorphic Features Formed by changes in redox conditions in
saturated soil Reduction and oxidation of C, Fe, Mn, and
S compounds Translocation of C, Fe, Mn, and S
compounds
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Redox TransformationsCoating of Fe2O3
Remove Fe
Brown Soil Fe3+
Fe2+
Gray Soil
2e- + 6H+ + Fe2O3 2Fe(II) + 3H2ONC STATENC STATE UNIVERSITY UNIVERSITY
DEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCENC STATENC STATE UNIVERSITY UNIVERSITY
DEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCENC STATENC STATE UNIVERSITY UNIVERSITY
DEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCENC STATENC STATE UNIVERSITY UNIVERSITY
DEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Redox features are like M&Ms
=
In order to form features:
• must have anaerobic conditions (reduced and saturated)
• must have Fe and/or Mn (electron acceptor)
• must have microbes (bugs)
• must have carbon (food for the bugs)
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Redoximorphic Features
• Redox concentrations – zone where Fe - Mn oxides have accumulated
• Redox depletions – zone where of Fe – Mn oxide have been stripped out
• Reduced matrix – low chroma matrix that changes color when exposed to air
Redox depletions (Fe depletions)
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Fe depletionsFe depletion on ped face
Fe depletion on pore
Fe depletion in ped interior
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Fe depletions
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Concentrations and depletionsConcentrations and depletions
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Redox concentrations (Fe masses, Fe pore linings)
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Fe masses and Fe pore linings
Pore lining on root channel
Pore lining on Ped surface
Nodule
Fe massin matrix
Concretion
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Fe pore linings
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Fe masses
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
Reduction, oxidation and Reduction, oxidation and translocation = saturationtranslocation = saturation
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
NC STATENC STATE UNIVERSITY UNIVERSITYDEPARTMENT of DEPARTMENT of SOIL SCIENCESOIL SCIENCE
1. Plant root grows into 1. Plant root grows into soilsoil2. Root dies and starts 2. Root dies and starts to decomposeto decompose