- 行业: Earth science
- Number of terms: 26251
- Number of blossaries: 0
- Company Profile:
An international scientific society that fosters the transfer of knowledge and practices to sustain global soils. Based in Madison, WI, and founded in 1936, SSSA is the professional home for 6,000+ members dedicated to advancing the field of soil science. It provides information about soils in ...
A term for the longer wavelengths of the infrared region, from 25 μm to 1 mm, the generally accepted shorter wavelength limit of the microwave part of the ME spectrum. This is severely limited in terrestrial use, as the atmosphere transmits very little radiation between 25 μm and the millimeter regions.
Industry:Earth science
In soil survey a map-unit which is a type of miscellaneous area from which most of the soil has been removed by wind erosion. The areas are generally shallow depressions with flat, irregular floors, which in some instances have a layer of pebbles or cobbles.
Industry:Earth science
A subsurface soil horizon that is cemented by illuvial silica, usually opal or microcrystalline forms of silica, to the degree that less than 50 percent of the volume of air-dry fragments will slake in water or HCl.
Industry:Earth science
Microbial community description based on composition of different taxa and DNA/RNA sequence types.
Industry:Earth science
Areas with 90% or more of the surface covered with cobbles, stones, and boulders. Commonly occurs as colluvium at the base of mountains but some areas may be left on mountainsides by glaciation or periglacial processes. A miscellaneous area.
Industry:Earth science
Crop production system that reduces, avoids or largely excludes the use of synthetically compound fertilizers, pesticides, growth regulators, and livestock feed additives.
Industry:Earth science
Loss of structural hydroxyl ions as water molecules on heating;
Industry:Earth science
An artificial open channel for partial digestion of liquid organic wastes in which the wastes are circulated and aerated by a mechanical device.
Industry:Earth science
Establishment of a community of microorganisms at a specific site or ecosystem.
Industry:Earth science
Intermittent or continuous saline water discharge at or near the soil surface under dryland conditions which reduces or eliminates crop growth. It is differentiated from other saline soil conditions by recent and local origin, shallow water table, saturated root zone, and sensitivity to cropping systems and precipitation.
Industry:Earth science
