Preferred term
nitrogen fixation
Definition
- [Henderson's] the process whereby atmospheric elemental nitrogen (dinitrogen, N2) is reduced to ammonia (NH3), and which is carried out in the living world only by some free-living bacteria and cyanobacteria and by a few groups of bacteria in symbiotic association with plants (the Rhizobium–legume association and the actinomycete–non-legume associations). The reaction is catalysed by the enzyme nitrogenase. Biological nitrogen fixation is the chief process by which atmospheric nitrogen enters the biosphere and becomes available as a nutrient to other organisms, although industrial nitrogen fixation is now of considerable significance. A smaller amount of atmospheric nitrogen is also fixed by conversion into nitrogen oxides by the action of lightning. see also nitrogen cycle.
Broader concept
Entry terms
- N2 fixation
Note
- [controlled by ] Staszewski 08.06.2013
Scope note
- US LTER controlled vocabulary
Creator
- herbert.schentz@umweltbundesamt.at
In other languages
Arabic
- تثبيت النيتروجين
Bulgarian
- Процес на усвояване на азота
Croatian
- fiksacija dušika
Czech
- fixace dusíku
Danish
- kvælstofbinding
Dutch
- stikstofbinding
Estonian
- lämmastiku seondamine (fikseerimine)
Finnish
- (ilman) typen sidonta
French
- fixation de l'azote
German
- Stickstoffixierung
Greek
- αζωτοδέσμευση
Hungarian
- nitrogén le/megkötés
Italian
- fissazione dell'azoto
Latvian
- slāpekļa fiksācija
Lithuanian
- azoto fiksavimas
Norwegian
- nitrogenfiksering
Polish
- wiązanie azotu
Portuguese
- fixação de azoto
Romanian
- fixare a azotului
Slovak
- viazanie dusíka
Slovenian
- vezava dušika
Spanish
- fijación de nitrogeno
Swedish
- kvävefixering
URI
http://vocabs.lter-europe.net/EnvThes/20971