Concept information
Preferred term
biogeochemical cycle
Definition
- A biogeochemical cycle is the pathway by which a chemical substance cycles (is turned over or moves through) the biotic and the abiotic compartments of Earth. The biotic compartment is the biosphere and the abiotic compartments are the atmosphere, hydrosphere and lithosphere. There are biogeochemical cycles for chemical elements, such as for calcium, carbon, hydrogen, mercury, nitrogen, oxygen, phosphorus, selenium, iron and sulfur, as well as molecular cycles, such as for water and silica. There are also macroscopic cycles, such as the rock cycle, and human-induced cycles for synthetic compounds such as polychlorinated biphenyls (PCBs). In some cycles there are reservoirs where a substance can remain or be sequestered for a long period of time. (Adapted from: https://en.wikipedia.org/wiki/Biogeochemical_cycle)
Broader concept
Narrower concepts
Entry terms
- biogeochemical cycling
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/QX8-LMD9579N-B
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