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- Alfisol abstract "Alfisols are a soil order in USDA soil taxonomy. Alfisols form in semiarid to humid areas, typically under a hardwood forest cover. They have a clay-enriched subsoil and relatively high native fertility. \"Alf\" refers to aluminium (Al) and iron (Fe). Because of their productivity and abundance, the Alfisols represent one of the more important soil orders for food and fiber production. They are widely used both in agriculture and forestry, and are generally easier to keep fertile than other humid-climate soils, though those in Australia and Africa are still very deficient in nitrogen and available phosphorus. Those in monsoonal tropical regions, however, have a tendency to acidify when heavily cultivated, especially when nitrogenous fertilizers are used.In the FAO soil classification, most Alfisols are classified as Luvisols or Lixisols, but some are classed as Nitosols.Alfisols occupy around one-tenth of the Earth's ice-free land surface. They are dominant in many areas, such as the Ohio River basin in the United States, southern and unglaciated Western Europe, the Baltic region and central European Russia, the drier parts of Peninsular India, Sudan in Africa, and many parts of South America.Alfisols have undergone only moderate leaching. By definition, they have at least 35% base saturation, meaning calcium, magnesium, and potassium are relatively abundant. This is in contrast to Ultisols, which are the more highly leached forest soils having less than 35% base saturation. In eastern North America, Alfisols are commonly found in glaciated areas while Ultisols are restricted to the areas south of the limit of maximum glaciation. The fossil record of Alfisols begins in the Late Devonian. Probably owing to their fertility, they are the oldest forest soils; vegetation on weathered Oxisols, by contrast, is not known earlier than Middle Permian. Fossil Alfisols remain common from the Carboniferous and all periods since the Eocene.".
- Alfisol thumbnail Alfisol_profile.jpg?width=300.
- Alfisol wikiPageExternalLink alfisols.htm.
- Alfisol wikiPageID "1163841".
- Alfisol wikiPageLength "3191".
- Alfisol wikiPageOutDegree "38".
- Alfisol wikiPageRevisionID "632539249".
- Alfisol wikiPageWikiLink Africa.
- Alfisol wikiPageWikiLink Aqualfs.
- Alfisol wikiPageWikiLink Australia.
- Alfisol wikiPageWikiLink Canadian_system_of_soil_classification.
- Alfisol wikiPageWikiLink Carboniferous.
- Alfisol wikiPageWikiLink Category:Pedology.
- Alfisol wikiPageWikiLink Category:Types_of_soil.
- Alfisol wikiPageWikiLink Cryalfs.
- Alfisol wikiPageWikiLink Devonian.
- Alfisol wikiPageWikiLink Eocene.
- Alfisol wikiPageWikiLink European_Russia.
- Alfisol wikiPageWikiLink Food_and_Agriculture_Organization.
- Alfisol wikiPageWikiLink Hardwood.
- Alfisol wikiPageWikiLink Lixisol.
- Alfisol wikiPageWikiLink Monsoon.
- Alfisol wikiPageWikiLink Nitosols.
- Alfisol wikiPageWikiLink Nitrogen.
- Alfisol wikiPageWikiLink North_America.
- Alfisol wikiPageWikiLink Ohio_River.
- Alfisol wikiPageWikiLink Oxisol.
- Alfisol wikiPageWikiLink Paleopedological_record.
- Alfisol wikiPageWikiLink Pedogenesis.
- Alfisol wikiPageWikiLink Pedology_(soil_study).
- Alfisol wikiPageWikiLink Permian.
- Alfisol wikiPageWikiLink Phosphorus.
- Alfisol wikiPageWikiLink Soil_classification.
- Alfisol wikiPageWikiLink Soil_science.
- Alfisol wikiPageWikiLink Soil_type.
- Alfisol wikiPageWikiLink South_America.
- Alfisol wikiPageWikiLink South_India.
- Alfisol wikiPageWikiLink Southern_Europe.
- Alfisol wikiPageWikiLink Sudan.
- Alfisol wikiPageWikiLink USDA_soil_taxonomy.
- Alfisol wikiPageWikiLink Udalfs.
- Alfisol wikiPageWikiLink Ultisol.
- Alfisol wikiPageWikiLink Western_Europe.
- Alfisol wikiPageWikiLink Xeralfs.
- Alfisol wikiPageWikiLinkText "Alfisol".
- Alfisol wikiPageWikiLinkText "alfisol".
- Alfisol classificationSystem USDA_soil_taxonomy.
- Alfisol climate "various".
- Alfisol imageCaption "an Alfisol profile".
- Alfisol imageSize "250".
- Alfisol name "Alfisol".
- Alfisol wikiPageUsesTemplate Template:Citation_needed.
- Alfisol wikiPageUsesTemplate Template:Cite_web.
- Alfisol wikiPageUsesTemplate Template:Commonscat.
- Alfisol wikiPageUsesTemplate Template:Infobox_soil.
- Alfisol wikiPageUsesTemplate Template:Soil_type.
- Alfisol subject Category:Pedology.
- Alfisol subject Category:Types_of_soil.
- Alfisol hypernym Order.
- Alfisol type Eukaryote.
- Alfisol comment "Alfisols are a soil order in USDA soil taxonomy. Alfisols form in semiarid to humid areas, typically under a hardwood forest cover. They have a clay-enriched subsoil and relatively high native fertility. \"Alf\" refers to aluminium (Al) and iron (Fe). Because of their productivity and abundance, the Alfisols represent one of the more important soil orders for food and fiber production.".
- Alfisol label "Alfisol".
- Alfisol sameAs Q304506.
- Alfisol sameAs Alfisòl.
- Alfisol sameAs Alfisol.
- Alfisol sameAs Alfisol.
- Alfisol sameAs Alfiszol.
- Alfisol sameAs Մոխրագույն_հողեր.
- Alfisol sameAs Alfisol.
- Alfisol sameAs Miško_pilkžemis.
- Alfisol sameAs Alfisol.
- Alfisol sameAs m.04cmbs.
- Alfisol sameAs Sol_cenușiu.
- Alfisol sameAs Серые_лесные_почвы.
- Alfisol sameAs Сірі_лісові_ґрунти.
- Alfisol sameAs Q304506.
- Alfisol wasDerivedFrom Alfisol?oldid=632539249.
- Alfisol depiction Alfisol_profile.jpg.
- Alfisol isPrimaryTopicOf Alfisol.