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However, Spodosols vary widely depending on climate and other soil-forming factors. In some, the gray (albic horizon) may be absent; in others, it may be more than 2 m thick over a spodic horizon; furthermore, in some the spodic horizon may be cemented and is then called ‘ortstein.’ Most Spodosols have few silicate clays.
May 1, 2011 · The lower boundary of the spodic horizon and the thickness of the spodic horizon were significantly greater in soils with ≥50% ortstein. However, there were no significant differences between the upper or lower boundaries or the thickness of ortstein for soils with ≥50 and <50% ortstein.
- James Bockheim
- 19
- 2011
- 01 May 2011
May 1, 2011 · Soils with ortstein occur on lesser slopes (p = 0.001) and at lower elevations (p = 0.015) than soils without ortstein. The lower depth boundary and thickness of the spodic horizon were significantly greater (p = 0.001) in soils with ortstein than in those without ortstein.
- James Bockheim
- 2011
A spodic horizon is a subsurface horizon underlying an O, A, Ap, or E horizon. A spodic horizon must have 85 percent or more “spodic materials” in a layer 2.5 cm or more thick that is not part of any Ap horizon. Spodic materials are
- 183KB
- 4
- ACKNOWLEDGMENTS
- Soil series
- Placudands
- Typic Placudands
Th is project was supported by grants from the National Science Foundation and the Huron Mountain Wildlife Foundation. Th e author acknowledges the helpful comments of three anonymous reviewers and the associate editor.
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Jan 1, 2018 · Cemented Fe/Mn-enriched layers (placic horizons), resulting from changes in redox potential, are common in soils with spodic features. This chapter summarises the properties of spodic horizons, ortstein and placic horizons and illustrates their characteristics based on micromorphological research.
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Jan 1, 2014 · The lower boundary of the spodic horizon and the thickness of the spodic horizon were significantly greater in soils with ≥50 % ortstein. However, there were no significant differences between the upper or lower boundaries or the thickness of ortstein for soils with ≥50 % and <50 % ortstein.
