- المجال: 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) The nonobligatory association between organisms that is mutually beneficial. Both populations can survive in their natural environment on their own although, when formed, the association offers mutual advantages. (ii) The simultaneous actions of two or more factors that have a greater total effect together than the sum of their individual effects.
Industry:Earth science
(i) The climatic condition of a small area resulting from the modification of the general climatic conditions by local differences in elevation or exposure or other local phenomena. (ii) The sequence of atmospheric changes within a very small region.
Industry:Earth science
A fire that consumes all organic material of the forest floor and also burns into the underlying soil itself, as, for example, a peat fire. Differentiated from a surface fire on the basis of vulnerability to wind; in a surface fire the flames are visible and burning is accelerated by wind, whereas, in a ground fire, wind is generally not a serious factor.
Industry:Earth science
The small pores, or the bulk volume of small pores, which hold water in soils against a tension usually >60 cm of water.
Industry:Earth science
A soil deposit that has been subjected to an effective pressure greater than the present over-burden pressure.
Industry:Earth science
A soil in which the surface layer becomes so well aggregated that it does not crust and seal under the impact of rain but instead serves as a surface mulch upon drying.
Industry:Earth science
A great soil group of the zonal order consisting of soils formed in cool-temperate to temperate, humid climates, under coniferous or mixed coniferous and deciduous forest, and characterized particularly by a highly-leached, whitish-gray (Podzol) A2 (E) horizon.
Industry:Earth science
(Na, Ca, K, Ba, Mn2+)2 Mn4O12•3H2) A black manganese oxide that occurs in soils and in the weathered regolith of sediments. It has a tunnel structure.
Industry:Earth science
(i)The systematic examination, description, classification, and mapping of soils in an area. Soil surveys are classified according to the kind and intensity of field examination. (ii) The program of the National Cooperative Soil Survey that includes developing and implementing standards for describing, classifying, mapping, writing, and publishing information about soils of a specific area.
Industry:Earth science
