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Subsoil layer. Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus. The subsoil is labeled the B Horizon in most soil mapping systems.
the third edition (Update 2015) with the English original and the translations into Czech, French, Georgian, Polish, Russian, Slovene, and Spanish, an explanation of the system, soil profile photos of all RSGs, which may be downloaded and used if the author is accredited (additional photos can be found on the World of Soils page of the IUSS), [9]
It has been suggested that the pedon, a column of soil extending vertically from the surface to the underlying parent material and large enough to show the characteristics of all its horizons, could be subdivided in the humipedon (the living part, where most soil organisms are dwelling, corresponding to the humus form), the copedon (in ...
Soil Profile on Chalk at Seven Sisters Country Park, England. Pedology (from Greek: πέδον, pedon, "soil"; and λόγος, logos, "study") is a discipline within soil science which focuses on understanding and characterizing soil formation, evolution, and the theoretical frameworks for modeling soil bodies, often in the context of the natural environment. [1]
Pages in category "Biography articles needing translation from Spanish Wikipedia" The following 200 pages are in this category, out of approximately 3,087 total. This list may not reflect recent changes .
USDA soil taxonomy (ST) developed by the United States Department of Agriculture and the National Cooperative Soil Survey provides an elaborate classification of soil types according to several parameters (most commonly their properties) and in several levels: Order, Suborder, Great Group, Subgroup, Family, and Series.
The term caliche is borrowed from Spanish and is originally from the Latin word calx, meaning lime. [1] Caliche is generally light-colored but can range from white to light pink to reddish-brown, depending on the minerals present. Caliche is a mark of older landscapes. It generally occurs on or very near the surface.
Immobilization and stabilization of organic matter, Fe and Al into the subsoil. [ 11 ] [ 13 ] [ 14 ] Podzol A layers In the topsoil of acidic soils, organic matter (mostly from plant litter , the humus layer and root exudates ) together with Al- and Fe-ions, form organo-mineral complexes.