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Encyclopedia > Spodosols

Podsol (also spelled Podzol, or known as Spodosol) is the typical soil of coniferous, or Boreal forests. The name is Russian for ash soil (due to the appearance of the E horizon), and it is found in areas that are wet and cold (for example in Northern Ontario or Russia). For the heavy metal band see Soil (band) Soil is the layer of minerals and organic matter, in thickness from centimetres to a metre or more, on the land surface. ... Orders & Families Cordaitales † Pinales   Pinaceae - Pine family   Araucariaceae - Araucaria family   Podocarpaceae - Yellow-wood family   Sciadopityaceae - Umbrella-pine family   Cupressaceae - Cypress family   Cephalotaxaceae - Plum-yew family   Taxaceae - Yew family Vojnovskyales † Voltziales † The conifers, division Pinophyta, are one of 13 or 14 division level taxa within the Kingdom Plantae. ... Taiga (SAMPA /taIg@/, from Russian тайга́) is a biome characterized by its coniferous forests. ... Motto: Ut Incepit Fidelis Sic Permanet (Loyal she began, loyal she remains) Other Canadian provinces and territories Capital Toronto Largest city Toronto Lieutenant Governor James K. Bartleman Premier Dalton McGuinty (Liberal) Area 1,076,395 km² (4th)  - Land 917,741 km²  - Water 158,654 km² (14. ...


The bleached soil, which is usually 4-8 cm thick, is low in iron and lime, and is formed under moist and cool conditions. It is found under a layer of organic material in the process of decomposition, which is usually 5-10 cm thick. In the middle, there is often a thin layer of 0.5 to 1 cm. The bleached soil goes over into a red or redbrown horizon called rusty soil. The colour is strongest in the upper part, and change at a depth of 50 to 100 cm progressively to the part of the soil that is mainly not affected by processes; that is the parent material. The soil profiles are designated the letters A (transitional layer with organic matter), E (bleached soil), B (rusty soil) and C (parent material). General Name, Symbol, Number iron, Fe, 26 Chemical series transition metal Group, Period, Block 8 (VIIIB), 4, d Density, Hardness 7874 kg/m3, 4. ... Lime has several meanings: Limestone Agricultural lime - a mineral soil additive Calcium oxide (also quicklime) - a chemical compound Calcium hydroxide (also slaked lime) - a chemical compound Lime (fruit) - a Citrus tree with a green fruit similar to a lemon, and the fruit of that tree. ... Organic has several meanings and related topics. ... Rotting fruit The term decomposition refers to the reduction of bodies and other formerly living organisms into simpler forms of matter and, most particularly, to the fate of the human body after death. ... A soil profile is a cross section through the soil which reveals its horizons (layers). ... Parent material, in soil science, means the underlying bedrock from which soil horizons form. ...


In podzols, translocation has meant the leaching out from the A horizon of clays, humic acids, iron, and alluvial compounds. These constituents may then accumulate to form a hardpan or iron band. Podzolization occurs when severe leaching leaves the upper horizon virtually depleted of all soil constituents except quartz grains. Clay minerals in the A horizon decompose by reaction with humic acids and form soluble salts. The leached material from the A horizon is deposited in the B horizon as a humus-rich horizon band or as a hard layer of sesquioxides. Chromosomal translocation of the 4th and 20th chromosome. ... Leaching is the process of extracting a substance from a solid by dissolving it in a liquid. ... Clay is a generic term for an aggregate of hydrous silicate particles less than 4 μm (micrometres) in diameter. ... Humic acids are those organic compounds found in soil that are insoluble in acidic conditions. ... In soil science, agriculture and gardening, hardpan is a general term for a dense layer of soil, residing usually below the uppermost topsoil layer. ... Leaching is the process of extracting a substance from a solid by dissolving it in a liquid. ... Humic acids are those organic compounds found in soil that are insoluble in acidic conditions. ... For article about the oriental food, see Hummus. ...


  Results from FactBites:
 
Sabine Grunwald (3489 words)
Spodosols are used for forestry, pasture, hay, and for cultivated crops (e.g.
Spodosols with appreciable amounts of Al have large capacity to fix P, which is associated with the properties of the OM-sesquioxide complex in the spodic horizon.
Spodosols with an argillic or a kandic horizon within 200 cm of the mineral soil surface are denoted as 'Alfic' (e.g.
Spodosols Map | NRCS Soils (315 words)
Spodosols are most extensive in areas of cool, humid or perhumid climates in the Northeastern States, southern Alaska, the Great Lakes States, and the high mountains of the Northwestern States.
Humods are the relatively freely drained Spodosols that have a large accumulation of organic carbon in the spodic horizon.
Orthods are the relatively freely drained Spodosols that have a moderate accumulation of organic carbon in the spodic horizon.
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