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- According to Soil Taxonomy (ST), ortstein consists of spodic materials and occurs in a layer that is ≥25 mm thick and ≥50% cemented (Fig. 1A-1C; 34). In ST, ortstein is both a diagnostic subsurface horizon and the only rupture-resistance class recognized in the system.
acsess.onlinelibrary.wiley.com/doi/full/10.2136/sssaj2010.0214Distribution and Genesis of Ortstein and Placic Horizons in ...
Examples include consociation, diagnostic horizon, taxadjunct, and pedon. The short commentary that accompanies many of the terms provides information about the importance of the item in soil classification, soil interpretation, or understanding soil genesis (see Cumulic subgroup for an example).
Soil structure refers to the aggregation of primary soil particles into compound particles that are separated from adjoining aggregates by surfaces of weakness. Soil structure is classified in terms of grade or distinctness (weak, moderate, strong), class or size (fine, medium, coarse, very coarse), and type (granular, platy, prismatic, blocky).
May 1, 2011 · According to Soil Taxonomy (ST), ortstein consists of spodic materials and occurs in a layer that is ≥25 mm thick and ≥50% cemented (Fig. 1A-1C; 34). In ST, ortstein is both a diagnostic subsurface horizon and the only rupture-resistance class recognized in the system.
A common application of soil classification (the act of identifying the taxonomic classification for a given soil) is to develop models of how soils of different classifications associate with one another within a landscape, which can eventually be used in soil mapping.
The Forum encourages open discussion of topics related to soil classification, soil description, diagnostic soil properties and qualities of soil, taxonomic classes, and ideas to improve Soil Taxonomy.
Nature and purpose of soil classification. Misconceptions about soil taxonomy. Attributes of the Canadian system. Bases of criteria for defining taxa at various categorical levels. Relationship of taxonomic classes to environments. Relationship of the Canadian system to other systems of soil taxonomy. Summary.
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A common application of soil classification (the act of identifying the taxonomic classification for a given soil) is to develop models of how soils of different classifications associate with one another within a landscape, which can eventually be used in soil mapping.
