- 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 ...
The number of electrons required to fill the outermost shell of an atom or alternatively the number of electrons which can be lost or shared in the outermost shell.
Industry:Earth science
The quantity of oxygen used in the biochemical oxidation of organic and inorganic matter in a specified time, at a specified temperature, and in specified conditions. An indirect measure of the concentration of biologically degradable material present in organic wastes.
Industry:Earth science
The mineral Mg(OH)2; it has a layer type structure with magnesium ions in octahedral coordination and is the structure model for the trioctahedral sheet in layer silicates.
Industry:Earth science
Specialized dendritic (highly branched) structure formed within root cortical cells by endomycorrhizal fungus.
Industry:Earth science
The potential energy acting upon soil water due to the effect of solutes. Solution in contact with pure water will draw water from the reservoir of pure water due to the decrease in potential energy, i.e., osmotic poential, of the solution relative to the pure water. Osmotic potential equals the product of the universal gast constant, R, the temperature, T, and the total molar concentration of solutes, C(=RTC).
Industry:Earth science
The small mound of debris sloughed from the root plate (ball) of a tipped-over tree. Local soil horizons are commonly obliterated, which results in a heterogeneous mass of soil material.
Industry:Earth science
The microrelief of small basins and knolls or valleys and ridges on a soil surface produced by expansion and contraction during wetting and drying (usually in regions with distinct, seasonal, precipitation patterns) of clayey soils that contain smectite.
Industry:Earth science
Unconsolidated material deposited and compacted beneath a glacier and having a relatively high bulk density.
Industry:Earth science
