- 産業: 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 ...
A system of cutting in which trees, usually the largest, or small groups of such trees are removed for commercial production or to encourage reproduction under the remaining stand in the openings.
Industry:Earth science
A term formerly used to designate the mass of dry soil (105°C) per unit volume.
Industry:Earth science
A numerical method in which the flow domain is discretizedinto nodal points such that the differential equations can be reformulated into a series of simple algebraic (finite difference) approximations.
Industry:Earth science
Phosphorus adsorbed or precipitated on the surface of clay minerals or other crystalline materials.
Industry:Earth science
A statement of the relative proportions of available calcium and magnesium in the soil.
Industry:Earth science
A rock formed from materials deposited from suspension or precipitated from solution and usually being more or less consolidated. The principal sedimentary rocks are sandstones, shales, limestones, and conglomerates.
Industry:Earth science
A controlled biological process which converts organic constituents, usually wastes, into humus-like material suitable for use as a soil amendment or organic fertilizer.
Industry:Earth science
A group of related soils that differ, one from the other, in certain properties primarily as a result of differences in the parent material as a soil-forming factor.
Industry:Earth science
A layer that is marked with spots or blotches of different color or shades of color. The pattern of mottling and the size, abundance, and color contrast of the mottles may vary considerably and should be specified in soil description.
Industry:Earth science
