- 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 ...
(i) A stoniness class in which there are enough stones at or near the soil surface to be a continuing nuisance during operations that the mix the surface layer, but they do not make most such operations impractical. (ii) Containing appreciable quantities of stones.
Industry:Earth science
A statistic used to evaluate the adequacy of a model by comparing the predicted value (P) to the observed value (O) or a number (n) of values such that: RMS = ((1/nΣ(Pi -Oi)2)0. 5
Industry:Earth science
(i) One of the three orders in soil classification. (ii) A soil with more or less well developed soil characteristics that reflect the dominating influence of some local factor of relief, parent material, or age, over the normal effect of climate and vegetation.
Industry:Earth science
A classification of soil structure based on the shape of the aggregates or peds in the profile.
Industry:Earth science
A land surface owing its origin and form to depositional processes, with little or no modification by erosion.
Industry:Earth science
The quantity of adsorbed ion released when one symmetry concentration of another ion is added.
Industry:Earth science
A device consisting of two junctions of dissimilar metals which response to temperature differences between the two junctions.
Industry:Earth science
A peat accumulating wetland that receives some drainage from surrounding mineral soils and usually supports marsh-like vegetation. These areas are richer in nutrients and less acidic than bogs. The soils under fens are peat (Histosols) if the fen has been present for a while.
Industry:Earth science
A term formerly used to designate the ratio of the mass per unit bulk volume of soil and water.
Industry:Earth science
A law which states that mass is neither created nor destroyed in a defined system.
Industry:Earth science
