- soil and subsoil
- fonds et tréfonds m
Dictionary of Engineering, architecture and construction – materials & technologies, 2nd edition, la Maison du dictionnaire. 2007.
soil and subsoil
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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
Soil structure — is determined by how individual soil granules clump or bind together and aggregate, and therefore, the arrangement of soil pores between them. Soil structure has a major influence on water and air movement, biological activity, root growth and… … Wikipedia
Subsoil — (also called substrata) is the layer of soil under the topsoil on the surface of the ground. The subsoil may include substances such as clay and has only been partially broken down by air, sunlight, water etc., to produce true soil. Below the… … Wikipedia
Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock … Wikipedia
Soil series — purposes. A soil series name generally is derived from a town or landmark in or near the area where the soil series was first recognized.A soil series is a naturally occurring entity on the landscape. Therefore, a given series does not… … Wikipedia
soil organism — ▪ biology any organism inhabiting the soil during part or all of its life. Soil organisms, which range in size from microscopic cells that digest decaying organic material to small mammals that live primarily on other soil organisms, play an… … Universalium
Subsoil — Sub soil , n. The bed, or stratum, of earth which lies immediately beneath the surface soil. [1913 Webster] {Subsoil plow}, a plow having a share and standard but no moldboard. It follows in the furrow made by an ordinary plow, and loosens the… … The Collaborative International Dictionary of English
Subsoil plow — Subsoil Sub soil , n. The bed, or stratum, of earth which lies immediately beneath the surface soil. [1913 Webster] {Subsoil plow}, a plow having a share and standard but no moldboard. It follows in the furrow made by an ordinary plow, and… … The Collaborative International Dictionary of English
subsoil — /sub soyl /, n. the bed or stratum of earth or earthy material immediately under the surface soil. Also called undersoil. [1790 1800; SUB + SOIL1] * * * Layer (stratum) of earth immediately below the surface soil, consisting predominantly of… … Universalium
Soil Horizon letter designations — ▪ Table Soil horizon letter designations See as table: Base symbols for surface horizons O organic horizon containing litter and decomposed organic matter A mineral horizon darkened by humus accumulation Base symbols for subsurface horizons … Universalium
subsoil — sub|soil [ˈsʌbsɔıl] n [U] the layer of soil between the ground s surface and the lower layer of hard rock … Dictionary of contemporary English
