- 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 change of soil-water mass content with change in soil-water matric potential.
Industry:Earth science
The capacity of a forest to produce specific products (i.e. biomass, lumber) over time as influenced by the interaction of vegetative manipulation and abiotic factors (i.e. soil, climate, physiography). Net primary productivity (NPP) provides the fundamental measure of forest productivity. When measured at the point of foliar carrying capacity for all potential flora, NPP is a measure of potential site productivity. Rate of product growth, an economic component, is occasionally used as a partial measure of forest productivity.
Industry:Earth science
The surface layer of the forest floor which is not in an advanced stage of decomposition, usually consisting of freshly fallen leaves, needles, twigs, stems, bark, and fruits.
Industry:Earth science
The state in which particles of a solid are mixed with a fluid but are not dissolved.
Industry:Earth science
The ratio between the activity (chemical) and the concentration of a substance in solution. Activity of component n is usually indicated by (n) and concentration by (n).
Industry:Earth science
Used as an indicator of the accuracy of numerical computations. The mass balance is the absolute error in the water volume computation, i.e., sum of the net flux through the domain and the net volumetric change within the domain. It is often expressed as a percentage by dividing the water volume of the flow domain.
Industry:Earth science
Spodosols that have more than six times as much free iron (elemental) than organic carbon in the spodic horizon. Ferrods are rarely saturated with water or do not have characteristics associated with wetness.
Industry:Earth science
The thermodynamic potential for a system whose independent variables are the absolute temperature, applied pressure, mass variables, and other independent, extensive variables. The change in Gibbs free energy, as a system passes reversibly from one state to another at constant temperature and pressure, is a measure of the work available in that change of state.
Industry:Earth science
Water held in the interlayer space of phyllosilicate minerals.
Industry:Earth science
The relative difference in elevation between the upland summits and the lowlands or valleys of a given region.
Industry:Earth science
