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

K-selected

Earth science; Soil science

In ecological theory, that group of microorganisms in soil living at or near the carrying capacity of the soil environment. Analogous to autochthonous microorganisms.

Gray-brown podzolic soil

Earth science; Soil science

A zonal great soil group consisting of soils with a thin, moderately dark A1 (A) horizon and with a grayish-brown A2 (E) horizon underlain by a B horizon containing a high percentage of bases and an ...

Histic epipedon

Earth science; Soil science

A thin organic soil horizon that is saturated with water at some period of the year unless artificially drained and that is at or near the surface of a mineral soil. The histic epipedon has a ...

Fluvents

Earth science; Soil science

Entisols that form in recent loamy or clayey alluvial deposits, are usually stratified, and have an organic carbon content that decreases irregularly with depth. Fluvents are not saturated with ...

Orthox

Earth science; Soil science

Oxisols that are moist all or most of the time, and that have a low to moderate content of organic carbon within the upper 1 m or a mean annual soil temperature of 22°C or more.

Green manure crop

Earth science; Soil science

Any crop grown for the purpose of being turned under while green or soon after maturity for soil improvement.

Fragile land

Earth science; Soil science

Land that is sensitive to degradation when disturbed; such as with highly erodible soils, soils where salts can and do accumulate, and soils at high elevations.