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In both the World Reference Base for Soil Resources (WRB) [1] and the USDA soil taxonomy, [2] a Histosol is a soil consisting primarily of organic materials.They are defined as having 40 centimetres (16 in) or more of organic soil material starting within 40 cm from the soil surface.
The World Reference Base for Soil Resources (WRB) defines "sapric" (sa) as a histosol having less than one-sixth (by volume) of the organic material consisting of recognizable plant tissue within 100 cm of the soil surface. [4]
Soils with thick organic layers. HS Histosol (with thick organic layers) Soils with strong human influence. AT Anthrosol (with long and intensive agricultural use, often altered to enhance fertility) TC Technosol (containing significant amounts of artefacts) Soils with limitations to root growth. CR Cryosol (permafrost-affected)
The principal characteristics used to differentiate soil families include texture, mineralogy, pH, permeability, structure, consistency, the locale's precipitation pattern, and soil temperature. For some soils the criteria also specify the percentage of silt, sand and coarse fragments such as gravel, cobbles and rocks.
An anthrosol (or anthropogenic soil) in the World Reference Base for Soil Resources (WRB) [1] is a type of soil that has been formed or heavily modified due to long-term human activity, such as from irrigation, addition of organic waste or wet-field cultivation used to create paddy fields.
The USDA soil taxonomy [16] and the Chinese soil taxonomy [17] call these soils Spodosols. [18] The Canadian system of soil classification matches Podzols with soils under the Podzolic order (e.g. Humo-Ferric Podzol). [19] [20] The Australian Soil Classification [21] uses the term Podosols. The Brazilian Soil Classification System [22] calls ...
These are used to sort/organize digital messages. 3. Fizzy beverages with a sharp, zesty taste. 4. The words in this category sound like things from the animal kingdom.
Oxisols are a soil order in USDA soil taxonomy, best known for their occurrence in tropical rain forest within 25 degrees north and south of the Equator. In the World Reference Base for Soil Resources (WRB), [1] they belong mainly to the ferralsols, but some are plinthosols or nitisols. Some oxisols have been previously classified as laterite ...
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