- humic soils
- sols d'accumulation de l'humus
English-French dictionary of Geography . V.M. Kotlyakov, A.I. Komarova. 2007.
English-French dictionary of Geography . V.M. Kotlyakov, A.I. Komarova. 2007.
Humic acid — is one of the major components of humic substances [http://www.ihss.gatech.edu/whatarehs.html] which are dark brown and major constituents of soil organic matter humus that contributes to soil chemical and physical quality and are also precursors … Wikipedia
humic acid — a brown, melanin tinted mixture of polymers, found in lignite, peat, and soils, where it acts as a cation exchange agent: used in drilling fluids and inks. [1835 45] * * * ▪ chemistry one of two classes of natural acidic organic polymer… … Universalium
humic acid — noun a dark brown humic substance that is soluble in water only at pH values greater than 2 the half life of humic acid is measured in centuries • Hypernyms: ↑humic substance * * * noun : any of various organic acids that are insoluble in alcohol … Useful english dictionary
International Humic Substances Society — The International Humic Substances Society (IHSS) is a scientific society that seeks to advance knowledge and research of natural organic matter (NOM) in soil and water. It was founded in Denver, Colorado, USA, on September 11, 1981 by scientists … Wikipedia
Earthworm — Taxobox name = Earthworm image width = 250px image2 width = 250px image2 caption = Lumbricus terrestris, the Common European Earthworm regnum = Animalia phylum = Annelida classis = Oligochaeta ordo = Haplotaxida subordo = Lumbricina subdivision… … Wikipedia
Mere (lake) — Mere in English refers to a lake that is broad in relation to its depth, e.g. Martin Mere. A significant effect of its shallow depth is that for all or most of the time, it has no thermocline. Contents 1 Derivation of the word 1.1 Etymology 1.2… … Wikipedia
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
Canadian system of soil classification — The Canadian system of soil classification is more closely related to the American system than any other. They differ in several ways. The Canadian system is designed to cover only Canadian soils. The Canadian system dispenses with a sub order… … Wikipedia
Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock … Wikipedia
Podzol — Podsol, Spodosol a stagnopodzol in upland Wales Used in: WRB, USDA soil taxonomy, others … Wikipedia
Amazon River — Portuguese Rio Amazonas River, northern South America. It is the largest river in the world in volume and area of drainage basin, and only the Nile River of northeastern Africa exceeds it in length. It originates within 100 mi (160 km) of the… … Universalium