Tonga

Indicators

Amount of N added to cropland through biological fixation 150 t (2023) +115%

Value 150 t (2023)

Change since 1961 +115.3%

Amount of N added to cropland through biological fixation, per hectare of cropland 4.83 kg/ha (2023) +81%

Value 4.83 kg/ha (2023)

Change since 1961 +80.5%

N fertilizer consumption per capita 0.12 kg/person (2023) -56%

Value 0.12 kg/person (2023)

Change since 1982 -55.6%

Total nitrogen fertilizer production 0 t (2020) —

Value 0 t (2020)

Change since 2002 —

Definition (source: OECD): From the online data portal FAOSTAT maintained by the Statistics Division of the Food and Agriculture Organization of the United Nations (FAO) : 'Nutrient nitrogen' is defined as total nitrogen (N) from all fertilizer products. The 'Fertilizers by Nutrient' domain contains information on agricultural use, production, and trade of chemical and mineral fertilizers, in tonnes of nutrient, for the three main plant nutrients: nitrogen (N), phosphorus (expressed as P2O5) and potassium (expressed as K2O). The main data source for production and agricultural use is the FAOSTAT Fertilizers questionnaire, complemented with national publications when available. Agricultural use of fertilizers refers to the use for crops, livestock, forestry, fisheries and aquaculture, excluding use for animal feed. Industrial uses are excluded, to the extent allowed by data availability. Tonnes of nutrient nitrogen are calculated using conversion factors applied to volumes of nitrogenous fertilizers. For more information, please see: http://fenixservices.fao.org/faostat/static/documents/RFN/RFN_EN_README.pdf

Citation: OECD (2024). "Nutrient nitrogen production," Africa's Development Dynamics (AfDD): Table 23 - Ecological sustainability, OECD Data Explorer, https://data-explorer.oecd.org/vis?lc=en&tm=nitrogen&pg=0&snb=15&df[ds]=dsDisseminateFinalDMZ&df[id]=DSD_AFDD_STAT_ANNEX%40DF_TAB23&df[ag]=OECD.DEV.EMEA&df[vs]=1.0&dq=......A&pd=,&to[TIME_PERIOD]=false&vw=ov

Total nitrogen fertilizer production 0 t (2023) —

Value 0 t (2023)

Change since 2002 —

Nitrogen fertilizer consumption per hectare of arable land 4.55 kg/ha (2023) -24%

Value 4.55 kg/ha (2023)

Change since 1982 -24.2%

Nitrogen fertilizer use per hectare of cropland 2.17 kg/ha (2023) +3%

Value 2.17 kg/ha (2023)

Change since 1982 +3.3%

Total N fertilizer production 0 t (2023) —

Value 0 t (2023)

Change since 2002 —

N fertilizer imports 67 t (2023) +6%

Value 67 t (2023)

Change since 1982 +6.3%

N fertilizer exports 0 t (2023) —

Value 0 t (2023)

Change since 1990 —

N fertilizer use per capita 0.64 kg/ person (2023) —

Value 0.64 kg/ person (2023)

Change since 1961 —

Agricultural use of N fertilizer 67 t (2023) +6%

Value 67 t (2023)

Change since 1982 +6.3%

N fertilizers use per area of cropland 2.17 kg/ha (2023) —

Value 2.17 kg/ha (2023)

Change since 1961 —

Amount of N added to cropland through synthetic fertilizers, per hectare of cropland 2.16 kg/ha (2023) -11%

Value 2.16 kg/ha (2023)

Change since 1961 -10.8%

Amount of N added to cropland through animal manure 691 t (2023) +386%

Value 691 t (2023)

Change since 1961 +386.3%

Amount of N added to cropland through animal manure, per hectare of cropland 22.3 kg/ha (2023) +308%

Value 22.3 kg/ha (2023)

Change since 1961 +307.9%

N fertilizer use per value of agricultural production 1.85 g per $ (2023) —

Value 1.85 g per $ (2023)

Change since 1961 —

Agricultural use of nutrient nitrogen 0.0841 t (2020) —

Value 0.0841 t (2020)

Change since 2002 —

Definition (source: OECD): From the online data portal FAOSTAT maintained by the Statistics Division of the Food and Agriculture Organization of the United Nations (FAO) : 'Nutrient nitrogen' is defined as total nitrogen (N) from all fertilizer products. The 'Fertilizers by Nutrient' domain contains information on agricultural use, production, and trade of chemical and mineral fertilizers, in tonnes of nutrient, for the three main plant nutrients: nitrogen (N), phosphorus (expressed as P2O5) and potassium (expressed as K2O). The main data source for production and agricultural use is the FAOSTAT Fertilizers questionnaire, complemented with national publications when available. Agricultural use of fertilizers refers to the use for crops, livestock, forestry, fisheries and aquaculture, excluding use for animal feed. Industrial uses are excluded, to the extent allowed by data availability. Tonnes of nutrient nitrogen are calculated using conversion factors applied to volumes of nitrogenous fertilizers. For more information, please see: https://fenixservices.fao.org/faostat/static/documents/RFN/RFN_EN_README.pdf

Citation: OECD (2024). "Agricultural use of nutrient nitrogen," Africa's Development Dynamics (AfDD): Table 23 - Ecological sustainability, OECD Data Explorer, https://data-explorer.oecd.org/vis?lc=en&tm=nitrogen&pg=0&snb=15&df[ds]=dsDisseminateFinalDMZ&df[id]=DSD_AFDD_STAT_ANNEX%40DF_TAB23&df[ag]=OECD.DEV.EMEA&df[vs]=1.0&dq=......A&pd=,&to[TIME_PERIOD]=false&vw=ov

Import of ammonia (anhydrous) 0 t (2012) -100%

Value 0 t (2012)

Change since 2007 -100.0%

Import value of ammonia (anhydrous) 30 $ (2012) -100%

Value 30 $ (2012)

Change since 2007 -99.9%

Agricultural use of ammonium nitrate 295 t (2006) -97%

Value 295 t (2006)

Change since 2003 -97.1%

Import of ammonium nitrate 116 t (2023) +1157400%

Value 116 t (2023)

Change since 2003 +1157400.0%

Import value of ammonium nitrate 68.9 k$ (2023) +22129%

Value 68.9 k$ (2023)

Change since 2003 +22129.0%

Production of ammonium nitrate single year 0 t (2008) —

Agricultural use of ammonium sulphate 626 t (2011) +6160%

Value 626 t (2011)

Change since 2009 +6160.0%

Import of ammonium sulphate (Tonnes) 22.4 t (2022) —

Value 22.4 t (2022)

Change since 2003 —

Import value of ammonium sulphate (1000 USD) 9.07 k$ (2022) +15017%

Value 9.07 k$ (2022)

Change since 2003 +15016.7%

Production of ammonium sulphate (Tonnes) single year 0 t (2008) —

Agricultural use of calcium ammonium nitrate and other mixtures with calcium carbonate single year 30 t (2011) —

Import of calcium ammonium nitrate and other mixtures with calcium carbonate 1 t (2019) -52%

Value 1 t (2019)

Change since 2017 -51.9%

Import value of calcium ammonium nitrate and other mixtures with calcium carbonate 190 $ (2019) -72%

Value 190 $ (2019)

Change since 2017 -72.1%

Production of calcium ammonium nitrate and other mixtures with calcium carbonate single year 0 t (2008) —

Amount of N added to cropland through synthetic fertilizers 67 t N (2023) +6%

Value 67 t N (2023)

Change since 1961 +6.3%

Export of fertilizers n.e.c. single year 48.3 t (2009) —

Export value of fertilizers n.e.c. single year 17.1 k$ (2009) —

Import of fertilizers n.e.c. 138 t (2024) +1382500%

Value 138 t (2024)

Change since 2003 +1382500.0%

Import value of fertilizers n.e.c. 107 k$ (2024) +134188%

Value 107 k$ (2024)

Change since 2003 +134187.5%

Agricultural use of NPK fertilizers 8 t (2011) -58%

Value 8 t (2011)

Change since 2007 -57.9%

Import of NPK fertilizers 86.2 t (2024) -93%

Value 86.2 t (2024)

Change since 2003 -93.0%

Import value of NPK fertilizers 65.9 k$ (2024) -82%

Value 65.9 k$ (2024)

Change since 2003 -82.4%

Import of other nitrogenous fertilizers 0.38 t (2024) -100%

Value 0.38 t (2024)

Change since 2003 -99.9%

Import value of other nitrogenous fertilizers 1.27 k$ (2024) -99%

Value 1.27 k$ (2024)

Change since 2003 -98.8%

Agriculture use of urea 120 t (2011) -73%

Value 120 t (2011)

Change since 2003 -73.2%

Agriculture use of urea and ammonium nitrate solutions 1.3 kt (2011) +1784%

Value 1.3 kt (2011)

Change since 2009 +1784.1%

Import value of urea and ammonium nitrate solutions single year 10.6 k$ (2018) —

Production of urea and ammonium nitrate solutions single year 0 t (2008) —

Import of urea and ammonium nitrate solutions single year 24 t (2018) —

Import of urea 56 t (2024) -83%

Value 56 t (2024)

Change since 2003 -82.7%

Import value of urea 38.1 k$ (2024) -55%

Value 38.1 k$ (2024)

Change since 2003 -54.9%

Production of urea single year 0 t (2008) —

N lost from croplands through volatilisation 228 t (2023) +434%

Value 228 t (2023)

Change since 1961 +433.7%

N added onto cropland from atmospheric deposition 56.3 t (2023) +23%

Value 56.3 t (2023)

Change since 1961 +22.9%

N added onto cropland from atmospheric deposition, per hectare of cropland 1.82 kg/ha (2023) +3%

Value 1.82 kg/ha (2023)

Change since 1961 +3.1%

N lost from croplands through leaching 145 kg/ha and ton (2023) +410%

Value 145 kg/ha and ton (2023)

Change since 1961 +410.0%

N lost from croplands through leaching, per hectare of cropland 4.68 kg/ha (2023) +328%

Value 4.68 kg/ha (2023)

Change since 1961 +327.8%

N lost from croplands through volatilisation, per hectare of cropland (kg/ha) 7.34 kg/ha (2023) +348%

Value 7.34 kg/ha (2023)

Change since 1961 +347.7%

Amount of N removed from cropland through crop harvesting 1.31 kt (2023) -40%

Value 1.31 kt (2023)

Change since 1961 -40.3%

Amount of N removed from cropland through crop residue 78.2 t (2023) -27%

Value 78.2 t (2023)

Change since 1961 -27.0%

Amount of N removed from cropland through crop harvesting, per hectare of cropland 42.3 kg/ha (2023) -50%

Value 42.3 kg/ha (2023)

Change since 1961 -49.9%

Amount of N removed from cropland through crop residue, per hectare of cropland 2.52 kg/ha (2023) -39%

Value 2.52 kg/ha (2023)

Change since 1961 -38.8%

Nitrogen use efficiency 37.2 % (2014) -71%

Value 37.2 % (2014)

Change since 1961 -70.8%

Nitrous oxide (N₂O) Emissions from agriculture 19.8 kt CO₂e (2024) +196%

Value 19.8 kt CO₂e (2024)

Change since 1970 +195.5%

Nitrous oxide (N₂O) emissions from agriculture 20 Gt CO₂e (2023) +0%

Value 20 Gt CO₂e (2023)

Change since 1990 +0.0%

Nitrous oxide (N₂O) emissions from agriculture per capita 191 t CO₂e/person (2023) -5%

Value 191 t CO₂e/person (2023)

Change since 1990 -4.7%

Amount of N added to cropland through planting seeds 5.5 t (2023) -41%

Value 5.5 t (2023)

Change since 1961 -41.2%

Amount of N added to cropland through planting seeds, per hectare of cropland 0.177 kg/ha (2023) -51%

Value 0.177 kg/ha (2023)

Change since 1961 -50.7%

Total nitrous oxide (N₂O) emissions, excluding LULUCF 25.6 kt CO₂e (2024) +246%

Value 25.6 kt CO₂e (2024)

Change since 1970 +245.9%

Total nitrous oxide (N₂O) emissions, excluding LULUCF (% change from 1990) 31.3 % change (2024) +3150%

Value 31.3 % change (2024)

Change since 1991 +3150.0%

N₂O emissions from all sectors 24.5 Gt CO₂e (2024) +3024%

Value 24.5 Gt CO₂e (2024)

Change since 1850 +3023.7%

Share of global nitrous oxide (N₂O) emissions 0.000835 % (2024) +53%

Value 0.000835 % (2024)

Change since 1850 +52.9%

Definition (source: Our World in Data): A dataset describing the global warming response to national emissions CO2, CH4 and N2O from fossil and land use sources during 1851-2024. National CO2 emissions data are collated from the Global Carbon Project (Andrew and Peters, 2025; Friedlingstein et al., 2025). National CH4 and N2O emissions data are collated from PRIMAP-hist (HISTTP) (Gütschow et al., 2024). We construct a time series of cumulative CO2-equivalent emissions for each country, gas, and emissions source (fossil or land use). Emissions of CH4 and N2O emissions are related to cumulative CO2-equivalent emissions using the Global Warming Potential (GWP*) approach, with best-estimates of the coefficients taken from the IPCC AR6 (Forster et al., 2021). Warming in response to cumulative CO2-equivalent emissions is estimated using the transient climate response to cumulative carbon emissions (TCRE) approach, with best-estimate value of TCRE taken from the IPCC AR6 (Forster et al., 2021, Canadell et al., 2021). 'Warming' is specifically the change in global mean surface temperature (GMST). The data files provide emissions, cumulative emissions and the GMST response by country, gas (CO2, CH4, N2O or 3-GHG total) and source (fossil emissions, land use emissions or the total).

Citation: Jones et al. (2025) – with major processing by Our World in Data. “Share of global nitrous oxide emissions” [dataset]. Jones et al., “National contributions to climate change 2025.1” [original data]. Retrieved September 21, 2026 from https://archive.ourworldindata.org/20260910-011030/grapher/share-nitrous-oxide-emissions.html (archived on September 10, 2026).

Nitrous oxide (N₂O) Emissions from buildings (Energy) 300 t CO₂e (2024) —

Value 300 t CO₂e (2024)

Change since 1970 —

Nitrous oxide (N₂O) emissions from fugitive emissions (Energy) 0 t CO₂e (2024) —

Value 0 t CO₂e (2024)

Change since 1970 —

Nitrous oxide (N₂O) emissions from industrial combustion (Energy) 0 t CO₂e (2024) —

Value 0 t CO₂e (2024)

Change since 1970 —

Nitrous oxide (N₂O) emissions from industrial processes 2 kt CO₂e (2024) +233%

Value 2 kt CO₂e (2024)

Change since 1970 +233.3%

Nitrous oxide (N₂O) emissions from power industry (Energy) 100 t CO₂e (2024) —

Value 100 t CO₂e (2024)

Change since 1970 —

Nitrous oxide (N₂O) emissions from transport (Energy) 1 kt CO₂e (2024) +900%

Value 1 kt CO₂e (2024)

Change since 1970 +900.0%

Nitrous oxide (N₂O) emissions from waste 2.4 kt CO₂e (2024) —

Value 2.4 kt CO₂e (2024)

Change since 1970 —

Population (total) 104 k (2025) +57%

Value 104 k (2025)

Change since 1960 +56.8%

GDP (current US$) 679 M$ (2025) +1989%

Value 679 M$ (2025)

Change since 1975 +1989.5%

GDP per capita (current US$) 6.55 k$ (2025) +1773%

Value 6.55 k$ (2025)

Change since 1975 +1773.5%

Cropland area (% of land area) 15.3 % of land area (2023) -21%

Value 15.3 % of land area (2023)

Change since 1961 -21.4%

Agriculture, forestry, and fishing, value added (% of GDP) 18.6 % of GDP (2024) -56%

Value 18.6 % of GDP (2024)

Change since 1975 -56.2%

Cropland area (hectares) 31,000 ha (2023) +19%

Value 31,000 ha (2023)

Change since 1961 +19.2%

Socio-economic Information

N₂O Emissions by Sector

Indicators

Nitrogen-Related Policies & Regulations