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nitrogen cycle

Also known as nitrogen cycling

biogeochemical cycle by which nitrogen is converted into various chemical forms

AI overview

The nitrogen cycle is the natural process by which nitrogen moves through the environment, being converted from one chemical form to another as it cycles between the air, soil, water, and living organisms. This cycle matters because nitrogen is an essential element that plants need to grow, and the various chemical transformations it undergoes make it available in forms that living things can actually use.

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Research

34,033 papers

Transformation of the nitrogen cycle: recent trends, questions, and potential solutions.ReviewScience (New York, N.Y.) · 2008Galloway JN, Townsend AR, Erisman JW et al.DOI: 10.1126/science.1136674
Micromanaging the nitrogen cycle in agroecosystems.ReviewTrends in microbiology · 2022Klimasmith IM, Kent ADDOI: 10.1016/j.tim.2022.04.006
The marine nitrogen cycle: new developments and global change.ReviewNature reviews. Microbiology · 2022Hutchins DA, Capone DGDOI: 10.1038/s41579-022-00687-z
Agritech to Tame the Nitrogen Cycle.ReviewCold Spring Harbor perspectives in biology · 2024Stein LYDOI: 10.1101/cshperspect.a041668
Global soil nitrogen cycle pattern and nitrogen enrichment effects: Tropical versus subtropical forests.Global change biology · 2023Elrys AS, Zhu Q, Jiang C et al.DOI: 10.1111/gcb.16603
Hydroxylamine and the nitrogen cycle: A review.ReviewWater research · 2021Soler-Jofra A, Pérez J, van Loosdrecht MCMDOI: 10.1016/j.watres.2020.116723
Nitrogen cycle enzymology.ReviewCurrent opinion in chemical biology · 1998Ferguson SJDOI: 10.1016/s1367-5931(98)80059-8
The nitrogen cycle and mitigation strategies for nitrogen loss during organic waste composting: A review.ReviewChemosphere · 2022Hoang HG, Thuy BTP, Lin C et al.DOI: 10.1016/j.chemosphere.2022.134514

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Commons category: Nitrogen cycle

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Article

Global cycling of reactive nitrogen including industrial fertilizer production, nitrogen fixed by natural ecosystems, nitrogen fixed by oceans, nitrogen fixed by agricultural crops, NOx emitted by biomass burning, NOx emitted from soil, nitrogen fixed by lightning, NH3 emitted by terrestrial ecosystems, deposition of nitrogen to terrestrial surfaces and oceans, NH3 emitted from oceans, ocean NO2 emissions from the atmosphere, denitrification in oceans, and reactive nitrogen burial in oceans.

The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmospheric, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification. The majority of Earth's atmosphere (78%) is atmospheric nitrogen, making it the largest source of nitrogen. However, atmospheric nitrogen has limited availability for biological use, leading to a scarcity of usable nitrogen in many types of ecosystems.