- 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 variables, usually interrelated natural agencies, that are active in and responsible for the formation of soil. The factors are usually grouped into five major categories as follows: parent material, climate, organisms, topography, and time.
Industry:Earth science
Zone within the pedo-stratigraphic column that represents a change in lithology or sediment type. It may also mark a zone of nondeposition or erosion. Soil horizons below a lithologic discontinuity are designated as such by adding an "2" in front of the horizon designation (for the second parent material), e.g., 2Bt. If two lithologic discontinuities are present, a "3" is used for the third parent material, counting from the surface downward.
Industry:Earth science
The determination of the nutrient concentration in plants or plant parts with analytical procedures.
Industry:Earth science
Soils that are water repellent, often due to dense fungal mycelial mats or hydrophobic substances vaporized and reprecipitated during fire.
Industry:Earth science
The time required for an individual solute ion or molecule to travel through the soil.
Industry:Earth science
The smooth, flat surface along which a mineral readily breaks.
Industry:Earth science
The variation in soil properties (i) laterally across the landscape, or (ii) vertically downward through the soil.
Industry:Earth science
The ease with which a probe can be pushed into the soil. (May be expressed in units of distance, speed, force, or work depending on the type of penetrometer used. )
Industry:Earth science
The minimum water mass content at which a small sample of soil material can be deformed without rupture.
Industry:Earth science
