| AGREV | Agriculture and Environment Programme for Vittel area |
| Anammox | Anaerobic ammonium oxidation |
| BMP | Best management practices |
| BRIICS | Brazil, Russia, India, Indonesia, China and South Africa |
| CEAP | Conservation Effects Assessment Project |
| CMAQ | Community Multi-scale Air Quality (model) |
| CO2 | Carbon dioxide |
| DER | Direct environmental regulation |
| DNRA | Dissimilatory nitrate reduction to ammonium |
| DON | Dissolved organic nitrogen |
| ERS | Economic Research Service (United States Department of Agriculture) |
| EU | European Union |
| EUR | Euro |
| GDP | Gross Domestic Product |
| GEF | Global Environment Fund |
| GHG | Greenhouse gas |
| GLO | Ground-level ozone |
| GMWTP | reater Miami Watershed Trading Programme |
| GPNM | Global Partnership on Nutrient Management (UNEP) |
| GWAVA | Groundwater vulnerability and assessment (model) |
| GWh | Gigawatt hour |
| GWP | Global Warming Potential |
| HNO3 | Nitric acid |
| IFA | International Fertiliser Association |
| InMAP | Intervention Model for Air Pollution |
| INMS | International Nitrogen Management System |
| IPA | Impact-Pathway Analysis |
| IPCC | Intergovernmental Panel on Climate Change |
| KWh | Kilowatt hour |
| LRTAP | Convention on Long-range Transboundary Air Pollution |
| N2 | Dinitrogen (the inert form of nitrogen) |
| N2O | Nitrous oxide |
| N2O5 | Dinitrogen pentoxide |
| NANI | Net anthropogenic nitrogen inputs |
| NH3 | Ammonia |
| NH4+ | Ammonium |
| NH4NO3 | Ammonium nitrate |
| NHx | Reduced forms of nitrogen (includes ammonia and ammonium) |
| Nitrogen | Reactive forms of nitrogen (excludes N2) |
| Nitrogen cycle | Biogeochemical cycle of nitrogen |
| NLEAP | Nitrogen Loss and Environmental Assessment Package (model) |
| NO | Nitric oxide |
| NO2 | Nitrogen dioxide |
| NO2- | Nitrite |
| NO3- | Nitrate |
| NOx | Nitrogen oxides (includes nitric oxide and nitrogen dioxide) |
| NOy | Oxidised forms of nitrogen (includes nitrogen oxides, nitric acid and dinitrogen pentoxide) |
| NRCS | Natural Resource Conservation Service (United States Department of Agriculture) |
| NUE | Nitrogen Use Efficiency |
| O3 | Ozone |
| P | Phosphorus |
| PAN | Peroxyacetylnitrate |
| PAS | Integrated Approach to Nitrogen (Netherlands) |
| Pathways | Biogeochemical pathways |
| PB | Planetary boundaries |
| PES | Payment for ecosystem services |
| PFS | Public financial support |
| PON | Particulate organic nitrogen |
| PM | Particulate matter |
| PM2.5 | Fine particles (1-2.5 micrometres in diameter) |
| PM10 | Coarse particles (1-10 micrometres in diameter) |
| PP | Precautionary principle |
| PRMS | Precipitation-Runoff Modelling System (model) |
| REAP | Resource Enhancement and Protection Programme |
| SEK | Swedish krona |
| SWV-GWMA | Southern Willamette Valley groundwater management area (Oregon, United States) |
| TFRN | Task Force on Reactive Nitrogen (UN Economic Commission for Europe) |
| TMDL | Total Maximum Daily Load |
| TPS | Tradable permit system |
| UN | United Nations |
| UNEP | United Nations Environment Programme |
| USD | United States dollar |
| VNT | Vintage Nitrogen Trading (New Zealand) |
| VS | Voluntary scheme |
| WFD | Water Framework Directive (EU) |
| WHO | World Health Organisation (UN) |
| WQSTM | Water Quality and Sediment Transport Model (model) |
| WTO | World Trade Organisation |
| WWTP | Wastewater treatment plant |
Human Acceleration of the Nitrogen Cycle
Managing Risks and Uncertainty