Calcisol

Calcisol

▪ FAO soil group
 one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO) (soil). Calcisols are characterized by a layer of translocated (migrated) calcium carbonate—whether soft and powdery or hard and cemented—at some depth in the soil profile. They are usually well-drained soils with fine to medium texture, and they are relatively fertile because of their high calcium content. Their chief use is for animal grazing. Occupying about 6.4 percent of the continental land surface of the Earth, these soils are typically encountered in arid or Mediterranean climatic zones (southwestern United States, central and southern Argentina, central China, northern Africa, and the Arabian Peninsula).

      Soils in the Aridisol, Inceptisol, and Mollisol orders of the U.S. Soil Taxonomy show strong calcium carbonate accumulation and are therefore closely related to the Calcisols. Related FAO soil groups originating in arid regions and conditioned by limited leaching are Solonchak, Solonetz, Durisol, and Gypsisol.

* * *


Universalium. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Calcisol — Saltar a navegación, búsqueda El término Calcisol deriva del vocablo latino calcarius que significa calcáreo, haciendo alusión a la sustancial acumulación de caliza secundaria. El material original lo constituyen depósitos aluviales, coluviales o …   Wikipedia Español

  • Calcisols — A Calcisol in the FAO World Reference Base for Soil Resources is a soil with a substantial secondary accumulation of lime. Calcisols are common in calcareous parent materials and widespread in arid and semi arid environments. Formerly Calcisols… …   Wikipedia

  • soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… …   Universalium

  • World Reference Base — Die World Reference Base for Soil Resources (Abkürzung WRB) ist eine Bodenklassifikation, die als internationales Kommunikationsmittel für den Fachbereich Boden geschaffen wurde. Sie ist mehr oder weniger weltweit gültig, um Informationen über… …   Deutsch Wikipedia

  • Referentiel pedologique francais — Référentiel pédologique français Le référentiel pédologique français est un ouvrage réalisé par l Association Française pour l Étude du Sol et l INRA. Sommaire : Haut A B C D E F G H I J K L M N O P Q R S T U V W X Y Z …   Wikipédia en Français

  • Référentiel pédologique français — Le référentiel pédologique français est un ouvrage réalisé par l Association française pour l étude du sol et l INRA. Sommaire : Haut A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A …   Wikipédia en Français

  • Sierra de Picachos — Este artículo trata sobre la serranía mexicana. Para la cordillera colombiana, véase Parque Nacional Natural Cordillera de los Picachos. La región de la sierra de Picachos, en el Estado de Nuevo León (México), cubre una superficie de 1 405 km²,… …   Wikipedia Español

  • World Reference Base for Soil Resources — La World Reference Base for Soil Resources (WRB: acrónimo (en inglés) Base referencial mundial para recursos de suelos), es el estándar internacional taxonómico de sistema de Clasificación de suelos respaldado por la International Union of Soil… …   Wikipedia Español

  • Durisol — ▪ FAO soil group  one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO) (soil). Durisols are soils in semiarid environments that have a substantial layer of silica within 1 metre (39 inches) of the… …   Universalium

  • Gypsisol — ▪ FAO soil group  one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO) (soil). Gypsisols are characterized by a subsurface layer of gypsum (a hydrated calcium sulfate) accumulated by the… …   Universalium

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”