Biological fixation — Cropland nitrogen per unit area in Portugal
Portugal: Biological fixation — Cropland nitrogen per unit area was 0.9083 kg/ha in 2023. ◆ Volatile
Biological fixation — Cropland nitrogen per unit area in Portugal, 1961–2023
Source: Food and Agriculture Organization of the United Nations. Measured in kg/ha.
Analysis
Portugal recorded 0.9083 kg/ha for biological fixation — cropland nitrogen per unit area in 2023.
The figure is down 6.8% on the previous year and up 55.0% over ten years.
Over the whole period, biological fixation — cropland nitrogen per unit area in Portugal peaked at 5.03 kg/ha in 1963 and was at its lowest, 0.5836 kg/ha, in 2014.
Portugal ranks 151st of 176 countries on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Biological fixation — Cropland nitrogen per unit area in Portugal, year by year
| Year | kg/ha | Change |
|---|---|---|
| 1961 | 4.76 kg/ha | — |
| 1962 | 4.79 kg/ha | +0.6% |
| 1963 | 5.03 kg/ha | +5.1% |
| 1964 | 4.7 kg/ha | -6.5% |
| 1965 | 4.25 kg/ha | -9.7% |
| 1966 | 4.46 kg/ha | +5.1% |
| 1967 | 4.64 kg/ha | +4.0% |
| 1968 | 4.53 kg/ha | -2.3% |
| 1969 | 4.2 kg/ha | -7.4% |
| 1970 | 4.12 kg/ha | -1.9% |
| 1971 | 4.01 kg/ha | -2.8% |
| 1972 | 3.79 kg/ha | -5.3% |
| 1973 | 3.51 kg/ha | -7.5% |
| 1974 | 3.39 kg/ha | -3.4% |
| 1975 | 3.34 kg/ha | -1.5% |
| 1976 | 3.15 kg/ha | -5.7% |
| 1977 | 2.78 kg/ha | -11.8% |
| 1978 | 3.17 kg/ha | +14.1% |
| 1979 | 2.92 kg/ha | -7.9% |
| 1980 | 3.09 kg/ha | +6.0% |
| 1981 | 2.39 kg/ha | -22.6% |
| 1982 | 2.66 kg/ha | +11.1% |
| 1983 | 2.46 kg/ha | -7.4% |
| 1984 | 2.52 kg/ha | +2.2% |
| 1985 | 2.43 kg/ha | -3.4% |
| 1986 | 1.56 kg/ha | -35.7% |
| 1987 | 1.57 kg/ha | +0.6% |
| 1988 | 1.52 kg/ha | -3.4% |
| 1989 | 1.57 kg/ha | +3.3% |
| 1990 | 1.43 kg/ha | -8.8% |
| 1991 | 1.38 kg/ha | -3.7% |
| 1992 | 1.15 kg/ha | -16.5% |
| 1993 | 1.04 kg/ha | -9.3% |
| 1994 | 1.15 kg/ha | +10.2% |
| 1995 | 1.05 kg/ha | -9.1% |
| 1996 | 1.21 kg/ha | +15.2% |
| 1997 | 1.18 kg/ha | -2.0% |
| 1998 | 1.18 kg/ha | -0.5% |
| 1999 | 0.9565 kg/ha | -18.7% |
| 2000 | 0.8541 kg/ha | -10.7% |
| 2001 | 0.8844 kg/ha | +3.5% |
| 2002 | 0.8648 kg/ha | -2.2% |
| 2003 | 0.8805 kg/ha | +1.8% |
| 2004 | 0.8877 kg/ha | +0.8% |
| 2005 | 0.8503 kg/ha | -4.2% |
| 2006 | 0.9655 kg/ha | +13.5% |
| 2007 | 1.04 kg/ha | +7.3% |
| 2008 | 0.9615 kg/ha | -7.1% |
| 2009 | 0.9789 kg/ha | +1.8% |
| 2010 | 0.855 kg/ha | -12.7% |
| 2011 | 0.687 kg/ha | -19.6% |
| 2012 | 0.6921 kg/ha | +0.7% |
| 2013 | 0.5859 kg/ha | -15.3% |
| 2014 | 0.5836 kg/ha | -0.4% |
| 2015 | 0.6195 kg/ha | +6.2% |
| 2016 | 0.6593 kg/ha | +6.4% |
| 2017 | 0.6644 kg/ha | +0.8% |
| 2018 | 1.19 kg/ha | +79.1% |
| 2019 | 0.8314 kg/ha | -30.1% |
| 2020 | 0.8479 kg/ha | +2.0% |
| 2021 | 0.952 kg/ha | +12.3% |
| 2022 | 0.9746 kg/ha | +2.4% |
| 2023 | 0.9083 kg/ha | -6.8% |
Portugal compared with similar countries
- Portugal's 0.9083 kg/ha is below the median for high income countries, which is 3.23 kg/ha, 28% of the median. (52 countries reporting)
- Portugal's 0.9083 kg/ha is below the median for Europe & Central Asia, which is 3.06 kg/ha, 30% of the median. (42 countries reporting)
Biggest year-on-year movements
Years where Biological fixation — Cropland nitrogen per unit area in Portugal changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 2018 | +79.1% | 0.6644 kg/ha | 1.19 kg/ha |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 4.6 kg/ha | 4.2 kg/ha | 5.03 kg/ha | 9 |
| 1970s | 3.42 kg/ha | 2.78 kg/ha | 4.12 kg/ha | 10 |
| 1980s | 2.18 kg/ha | 1.52 kg/ha | 3.09 kg/ha | 10 |
| 1990s | 1.17 kg/ha | 0.9565 kg/ha | 1.43 kg/ha | 10 |
| 2000s | 0.9163 kg/ha | 0.8503 kg/ha | 1.04 kg/ha | 10 |
| 2010s | 0.7368 kg/ha | 0.5836 kg/ha | 1.19 kg/ha | 10 |
| 2020s | 0.9207 kg/ha | 0.8479 kg/ha | 0.9746 kg/ha | 4 |
Countries ranked near Portugal
- 148 Luxembourg 1.07 kg/ha compare
- 149 Afghanistan 0.9911 kg/ha compare
- 150 Belgium-Luxembourg 0.9334 kg/ha compare
- 152 Dominica 0.8955 kg/ha compare
- 153 Georgia 0.8782 kg/ha compare
- 154 Libya 0.7362 kg/ha compare
More environment data for Portugal
- Historical exposure to drought — Land soil moisture anomaly -0.6043 Percentage change (2025)
- Historical exposure to drought — Cropland soil moisture anomaly -0.5127 Percentage change (2025)
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.44 °C (2025)
- Temperature change 2.15 °C (2025)
- Wood-based panels — Production, annual growth rate 3.41 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual -3.29 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), annual growth rate 0.1607 % change on previous year (2024)
Frequently asked questions
- What is biological fixation — cropland nitrogen per unit area in Portugal?
- Biological fixation — cropland nitrogen per unit area in Portugal was 0.9083 kg/ha in 2023, according to Food and Agriculture Organization of the United Nations.
- What is the highest biological fixation — cropland nitrogen per unit area recorded in Portugal?
- The highest recorded value was 5.03 kg/ha in 1963.
- What is the lowest biological fixation — cropland nitrogen per unit area recorded in Portugal?
- The lowest recorded value was 0.5836 kg/ha in 2014.
- How does Portugal rank for biological fixation — cropland nitrogen per unit area?
- Portugal ranks 151st out of 176 countries with data for 2023.
- Is biological fixation — cropland nitrogen per unit area rising or falling in Portugal?
- Over the last ten years it is up 55.0%. The long-run trend across the full record is volatile.
- Where does this Portugal data come from?
- The figures come from Food and Agriculture Organization of the United Nations, published as part of Biological fixation — Cropland nitrogen per unit area. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 63 observations, free to reuse under CC BY-NC-SA 3.0 IGO (FAO).
About this data
The Cropland Nutrient balance domain contains information on the flows of nitrogen, phosphorus, and potassium from mineral fertilizer, manure applied, atmospheric deposition, crop removal, and biological fixation over cropland and per unit area of cropland. The flows are aggregated to total inputs and total outputs, from which the overall nutrient balance and nutrient use efficiency on cropland are calculated. Statistics are disseminated in units of tonnes and in kg/ha, as appropriate. Nutrient use efficiency is expressed as a fraction (%).