Soil science

Soil science

That science dealing with soils as a natural resource on the surface of the earth including soil formation, classification and mapping; physical, chemical, biological, and fertility properties of soils per se; and these properties in relation to the use and management of soils.

Industry: Earth science

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Soil science

Drainage basin

Earth science; Soil science

A general term for a region or area bounded by a drainage divide and occupied by a drainage system.

Clay

Earth science; Soil science

(i) A soil separate consisting of particles <0. 002 mm in equivalent diameter. See also soil separates. (ii) A textural class. See also soil texture. (iii) (In reference to clay mineralogy) A ...

Oe horizon (F layer)

Earth science; Soil science

A layer of partially decomposed litter with portions of plant structures still recognisable (hemic material). Occurs below the L layer on the forest floor in forest soils. It is the fermentation ...

Saturated soil paste

Earth science; Soil science

A particular mixture of soil and water. At saturation, the soil paste glistens as it reflects light, flows slightly when the container is tipped, and the paste slides freely and cleanly from a ...

Pediment

Earth science; Soil science

A gently sloping, erosional surface developed at the foot of a receding hill or mountain slope. The surface can be bare or it may be thinly mantled with alluvium and colluvium in transport to the ...

Weir

Earth science; Soil science

A low dam or overflow structure specified geometry placed across an open channel to measure the discharge from a unique water level-discharge relationship called the rating curve.