Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Vertisol> ?p ?o }
- Vertisol abstract "In both the FAO and USDA soil taxonomy, a vertisol (Vertosol in the Australian Soil Classification) is a soil in which there is a high content of expansive clay known as montmorillonite that forms deep cracks in drier seasons or years. Alternate shrinking and swelling causes self-mulching, where the soil material consistently mixes itself, causing vertisols to have an extremely deep A horizon and no B horizon. (A soil with no B horizon is called an A/C soil). This heaving of the underlying material to the surface often creates a microrelief known as gilgai.Vertisols typically form from highly basic rocks, such as basalt, in climates that are seasonally humid or subject to erratic droughts and floods, or that impeded drainage. Depending on the parent material and the climate, they can range from grey or red to the more familiar deep black (known as \"black earths\" in Australia, \"black gumbo\" in East Texas, and \"black cotton\" soils in East Africa).Vertisols are found between 50°N and 45°S of the equator. Major areas where vertisols are dominant are eastern Australia (especially inland Queensland and New South Wales), the Deccan Plateau of India, and parts of southern Sudan, Ethiopia, Kenya, and Chad (the Gezira), and the lower Paraná River in South America. Other areas where vertisols are dominant include southern Texas and adjacent Mexico, central India, northeast Nigeria, Thrace, New Caledonia and parts of eastern China.The natural vegetation of vertisols is grassland, savanna, or grassy woodland. The heavy texture and unstable behaviour of the soil makes it difficult for many tree species to grow, and forest is uncommon.The shrinking and swelling of vertisols can damage buildings and roads, leading to extensive subsidence. Vertisols are generally used for grazing of cattle or sheep. It is not unknown for livestock to be injured through falling into cracks in dry periods. Conversely, many wild and domestic ungulates do not like to move on this soil when inundated. However, the shrink-swell activity allows rapid recovery from compaction.When irrigation is available, crops such as cotton, wheat, sorghum and rice can be grown. Vertisols are especially suitable for rice because they are almost impermeable when saturated. Rainfed farming is very difficult because vertisols can be worked only under a very narrow range of moisture conditions: they are very hard when dry and very sticky when wet. However, in Australia, vertisols are highly regarded, because they are among the few soils that are not acutely deficient in available phosphorus. Some, known as \"crusty vertisols\", have a thin, hard crust when dry that can persist for two to three years before they have crumbled enough to permit seeding.In the USA soil taxonomy, vertisols are subdivided into: Aquerts: Vertisols which are subdued aquic conditions for some time in most years and show redoximorphic features are grouped as Aquerts. Because of the high clay content, the permeability is slowed down and aquic conditions are likely to occur. In general, when precipitation exceeds evapotranspiration, ponding may occur. Under wet soil moisture conditions, iron and manganese are mobilized and reduced. The manganese may be partly responsible for the dark color of the soil profile. Cryerts (not classified as vertisols in the FAO classification): They have a cryic soil temperature regime. Cryerts are most extensive in the grassland and forest-grassland transitions zones of the Canadian Prairies and at similar latitudes in Russia. Xererts: They have a thermic, mesic, or frigid soil temperature regime. They show cracks that are open at least 60 consecutive days during the summer, but are closed at least 60 consecutive days during winter. Xererts are most extensive in the eastern Mediterranean and parts of California. Torrerts: They have cracks that are closed for less than 60 consecutive days when the soil temperature at 50 cm is above 8 °C. These soils are not extensive in the U.S., and occur mostly in west Texas, New Mexico, Arizona, and South Dakota, but are the most extensive suborder of Vertisols in Australia. Usterts: They have cracks that are open for at least 90 cumulative days per year. Globally, this suborder is the most extensive of the Vertisols order, encompassing the Vertisols of the tropics and monsoonal climates in Australia, India, and Africa. In the U.S. the Usterts are common in Texas, Montana, Hawaii, and California. Uderts: They have cracks that are open less than 90 cumulative days per year and less than 60 consecutive days during the summer. In some areas, cracks open only in drought years. Uderts are of small extent globally, being most abundant in Uruguay and eastern Argentina, but also found in parts of Queensland and the \"Black Belt\" of Mississippi and Alabama.↑".
- Vertisol thumbnail Vertisol.jpg?width=300.
- Vertisol wikiPageExternalLink vertisols.htm.
- Vertisol wikiPageExternalLink vertisols.htm.
- Vertisol wikiPageExternalLink vertisols.html.
- Vertisol wikiPageExternalLink vertisols.htm.
- Vertisol wikiPageID "1520036".
- Vertisol wikiPageLength "6774".
- Vertisol wikiPageOutDegree "54".
- Vertisol wikiPageRevisionID "704210345".
- Vertisol wikiPageWikiLink Alabama.
- Vertisol wikiPageWikiLink Argentina.
- Vertisol wikiPageWikiLink Australian_Soil_Classification.
- Vertisol wikiPageWikiLink Basalt.
- Vertisol wikiPageWikiLink Base_(chemistry).
- Vertisol wikiPageWikiLink Category:Patterned_grounds.
- Vertisol wikiPageWikiLink Category:Pedology.
- Vertisol wikiPageWikiLink Category:Types_of_soil.
- Vertisol wikiPageWikiLink Cattle.
- Vertisol wikiPageWikiLink Chad.
- Vertisol wikiPageWikiLink Cotton.
- Vertisol wikiPageWikiLink Deccan_Plateau.
- Vertisol wikiPageWikiLink Drought.
- Vertisol wikiPageWikiLink Ethiopia.
- Vertisol wikiPageWikiLink Expansive_clay.
- Vertisol wikiPageWikiLink Flood.
- Vertisol wikiPageWikiLink Food_and_Agriculture_Organization.
- Vertisol wikiPageWikiLink Gilgai.
- Vertisol wikiPageWikiLink Grassland.
- Vertisol wikiPageWikiLink Humid_subtropical_climate.
- Vertisol wikiPageWikiLink India.
- Vertisol wikiPageWikiLink Irrigation.
- Vertisol wikiPageWikiLink Kenya.
- Vertisol wikiPageWikiLink Mediterranean_climate.
- Vertisol wikiPageWikiLink Mexico.
- Vertisol wikiPageWikiLink Mississippi.
- Vertisol wikiPageWikiLink Montmorillonite.
- Vertisol wikiPageWikiLink New_South_Wales.
- Vertisol wikiPageWikiLink Nigeria.
- Vertisol wikiPageWikiLink Paraná_River.
- Vertisol wikiPageWikiLink Pedogenesis.
- Vertisol wikiPageWikiLink Pedology_(soil_study).
- Vertisol wikiPageWikiLink Perturbation_(geology).
- Vertisol wikiPageWikiLink Phosphorus.
- Vertisol wikiPageWikiLink Queensland.
- Vertisol wikiPageWikiLink Rice.
- Vertisol wikiPageWikiLink Savanna.
- Vertisol wikiPageWikiLink Semi-arid_climate.
- Vertisol wikiPageWikiLink Sheep.
- Vertisol wikiPageWikiLink Soil_classification.
- Vertisol wikiPageWikiLink Soil_horizon.
- Vertisol wikiPageWikiLink Sorghum.
- Vertisol wikiPageWikiLink Sudan.
- Vertisol wikiPageWikiLink Texas.
- Vertisol wikiPageWikiLink Thrace.
- Vertisol wikiPageWikiLink Tropical_savanna_climate.
- Vertisol wikiPageWikiLink USDA_soil_taxonomy.
- Vertisol wikiPageWikiLink Uruguay.
- Vertisol wikiPageWikiLink Wheat.
- Vertisol wikiPageWikiLink Woodland.
- Vertisol wikiPageWikiLink World_Reference_Base_for_Soil_Resources.
- Vertisol wikiPageWikiLinkText "Black Cotton Soils".
- Vertisol wikiPageWikiLinkText "Black soils".
- Vertisol wikiPageWikiLinkText "Black".
- Vertisol wikiPageWikiLinkText "Vertisol".
- Vertisol wikiPageWikiLinkText "Vertisols".
- Vertisol wikiPageWikiLinkText "black cotton soil".
- Vertisol wikiPageWikiLinkText "black cotton".
- Vertisol wikiPageWikiLinkText "black gumbo".
- Vertisol wikiPageWikiLinkText "black soil".
- Vertisol wikiPageWikiLinkText "black soils".
- Vertisol wikiPageWikiLinkText "black".
- Vertisol wikiPageWikiLinkText "black-soil".
- Vertisol wikiPageWikiLinkText "churning clays".
- Vertisol wikiPageWikiLinkText "clay soils".
- Vertisol wikiPageWikiLinkText "cracking clay soils".
- Vertisol wikiPageWikiLinkText "cracking clays".
- Vertisol wikiPageWikiLinkText "gumbo".
- Vertisol wikiPageWikiLinkText "heavy clay soils".
- Vertisol wikiPageWikiLinkText "soils".
- Vertisol wikiPageWikiLinkText "vertisol".
- Vertisol classificationSystem USDA_soil_taxonomy.
- Vertisol classificationSystem World_Reference_Base_for_Soil_Resources.
- Vertisol climate Humid_subtropical_climate.
- Vertisol climate Mediterranean_climate.
- Vertisol climate Semi-arid_climate.
- Vertisol climate Tropical_savanna_climate.
- Vertisol code "VR".
- Vertisol imageCaption "a Vertisol profile".
- Vertisol imageSize "250".
- Vertisol name "Vertisol".
- Vertisol process "clay pedoturbation".
- Vertisol profile "OAC".
- Vertisol wikiPageUsesTemplate Template:Cite_web.
- Vertisol wikiPageUsesTemplate Template:Infobox_soil.
- Vertisol wikiPageUsesTemplate Template:Reflist.
- Vertisol wikiPageUsesTemplate Template:Soil_type.
- Vertisol subject Category:Patterned_grounds.
- Vertisol subject Category:Pedology.
- Vertisol subject Category:Types_of_soil.
