bleached horizon

См. также в других словарях:

• horizon — /heuh ruy zeuhn/, n. 1. the line or circle that forms the apparent boundary between earth and sky. 2. Astron. a. the small circle of the celestial sphere whose plane is tangent to the earth at the position of a given observer, or the plane of… …   Universalium

• Soil horizon — Soil samples illustrating horizons (subsoil on right) A soil horizon is a specific layer in the land area that is parallel to the soil surface and possesses physical characteristics which differ from the layers above and beneath …   Wikipedia

• FAO Soil Classification System — ▪ Table Soil classification system of the Food and Agriculture Organization   soil group  abbrevi ation defining  characteristics name derivation percent of Earth s land area See as table: Soils defined by parent material   Andosol AN volcanic… …   Universalium

• Duplex soil — With the term “duplex soil”, Northcote defined a primary profile in his Factual Key classification.[1] He described a group of texture contrast soils where the B horizon is dominated by a texture class one and a half (or more) finer than the A… …   Wikipedia

• Podzol — Podsol, Spodosol a stagnopodzol in upland Wales Used in: WRB, USDA soil taxonomy, others …   Wikipedia

• Podsol — In soil science, Podsol (also spelled Podzol, or known as Spodosol) are the typical soils of coniferous, or Boreal forests. They are also the typical soils of eucalypt forests and heathlands in southern Australia. The name is Russian for under… …   Wikipedia

• podzol — [päd′säl΄, päd′sôl΄päd′zäl΄, päd′zôl΄] n. 〚< Russ podzol〛 a type of light colored, relatively infertile soil, poor in lime and iron, found typically in coniferous forests in cool, humid regions: also podsol [päd′säl΄, päd′sôl΄] podzolic… …   Universalium

• spodosol — /spod euh sawl , sol /, n. an acidic forest soil of low fertility, common to the cool, humid areas of North America and Eurasia. [1955 60; < Gk spodó(s) wood ash + SOL] * * * ▪ soil type  one of the 12 soil orders in the U.S. Soil Taxonomy (soil) …   Universalium

• ultisol — /ul teuh sawl , sol /, n. a weathered, red and yellow acidic soil of warm, humid areas that is agriculturally productive when treated with lime and organic fertilizers. [1965 70; ULTI(MATE) + SOL] * * * ▪ soil type  one of the 12 soil orders in… …   Universalium

• podzolic soil — ▪ pedology podzolic also spelled  Podsolic,  also called  Lessivé Soil,         soil usually forming in a broadleaf forest and characterized by moderate leaching, which produces an accumulation of clay and, to some degree, iron that have been… …   Universalium

• photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …   Universalium