- decomposed organic matter
- с.-х.гумус
English-Russian scientific dictionary. 2008.
decomposed organic matter
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Soil organic matter — (SOM) is the organic matter component of soil. It can be divided into three general pools: living biomass of microorganisms, fresh and partially decomposed residues, and humus: the well decomposed organic matter and highly stable organic material … Wikipedia
Organic matter — Other meanings can be found at Biological material Organic matter (or organic material, Natural Organic Matter, or NOM) is matter that has come from a once living organism; is capable of decay, or the product of decay; or is composed of organic… … Wikipedia
organic — adjective 1 LIVING THINGS living, or produced by or from living things: Peat is decomposed organic matter. opposite inorganic (1) 2 BODY ORGANS concerning the organs of the body: organic diseases 3 PART OF STH a) made up of many parts that all… … Longman dictionary of contemporary English
soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… … Universalium
Soil horizon — Soil samples illustrating horizons (subsoil on right) A soil horizon is a specific layer in the land area that is parallel to the soil surface and possesses physical characteristics which differ from the layers above and beneath … Wikipedia
Soil Horizon letter designations — ▪ Table Soil horizon letter designations See as table: Base symbols for surface horizons O organic horizon containing litter and decomposed organic matter A mineral horizon darkened by humus accumulation Base symbols for subsurface horizons … Universalium
boreal forest — ▪ northern forest Introduction also called taiga vegetation composed primarily of cone bearing, needle leaved, or scale leaved evergreen trees, found in regions that have long winters and moderate to high annual precipitation. The… … Universalium
Kerogen — is a mixture of organic chemical compounds that make up a portion of the organic matter in sedimentary rocks. [ [http://www.glossary.oilfield.slb.com/Display.cfm?Term=kerogen Oilfield Glossary] ] It is insoluble in normal organic solvents because … Wikipedia
Hydrocarbon — Ball and stick model of the methane molecule, CH4. Methane is part of a homologous series known as the alkanes, which contain single bonds only. In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon … Wikipedia
sapropel — sapropelic, adj. /sap reuh pel /, n. mud consisting chiefly of decomposed organic matter formed at the bottom of a stagnant sea or lake. [1905 10; SAPRO + pel < Gk pelós mud] * * * ▪ geology unconsolidated sedimentary deposit rich in… … Universalium
Houdek (soil) — Houdek is a type of soil composed of glacial till and decomposed organic matter. It is found only in the U.S. state of South Dakota where it is the state soil.Houdek topsoil is composed of weathered glacial till and 2% to 4% organic matter which… … Wikipedia
