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

thermic

Earth science; Soil science

A soil temperature regime that has mean annual soil temperatures of 15°C or more but 5°C difference between mean summer and mean winter soil temperatures at 50 cm below the surface. Isothermic is ...

geographic information system (GIS)

Earth science; Soil science

A method of overlaying large volumes of spatial data of different kinds. The data are referenced to a set of geographical coordinates and encoded in a form suitable for handling by a digital ...

electrical conductivity (EC)

Earth science; Soil science

1. Conductivity of electricity through water or an extract of soil. Commonly used to estimate the soluble salt content in solution. 2. The ability of the soil to conduct electricity.

siderophore

Earth science; Soil science

A nonporphyrin metabolite secreted by certain microorganisms that forms a highly stable coordination compound with iron. There are two major types: catecholate and hydroxamate.

pressure membrane

Earth science; Soil science

A membrane, permeable to water and only very slightly permeable to gas when wet, through which water can escape from a soil sample in response to a pressure gradient.

lava flow

Earth science; Soil science

A solidified body of rock formed from the lateral, surficial outpouring of molten lava from a vent or fissure, often lobate in form.

bar

Earth science; Soil science

(i) A generic term for ridge-like accumulations of sand , gravel, or other unconsolidated material formed in the channel, along the banks, or at the mouth of a streams or formed by waves or currents ...