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Greenhouse gas emissions from agrifood systems

Global, regional and country trends, 2000–2022










Last updated 14/11/2024

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FAO. 2024. Greenhouse gas emissions from agrifood systems  Global, regional and country trends, 2000–2022. FAOSTAT Analytical Brief Series, No. 94. Rome.


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    Greenhouse gas emissions from agrifood systems
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    2022
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    Agrifood systems account for one-third of total anthropogenic greenhouse gas emissions. They are generated in various ways: within the farm gate, through crop and livestock production; through land-use change; and in pre- and post-production processes, including food manufacturing, retail, household consumption and food disposal. According to the latest data, global agrifood systems emissions reached 16 billion tonnes of carbon dioxide equivalent (Gt CO2eq) in 2020, an increase of 9 percent since 2000.
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    Cropland nutrient budget
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    The FAOSTAT domain “Cropland Nutrient Budget” disseminates nutrient flows in a given country and year. The Cropland nutrient budget can give an indication of nutrient use efficiency, as it can help quantify excess nitrogen leading to environmental risks, for instance, GHG emissions or pollution from volatilization and leaching/runoff. It can also signal cropland nutrient deficits that limit crop production. The FAO 2022 update of the cropland nutrient budget is a joint effort with the International Fertilizer Association (IFA) in collaboration with University of Maryland, Swedish Agricultural University, University of Madrid, Wageningen University, University of Nebraska and the African Plant Nutrition Institute. This brief analyzes global, regional and country trends for the period 1961–2020.
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    Methods for estimating greenhouse gas emissions from food systems
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    This paper is part of a series detailing new methodologies for estimating key components of agrifood systems emissions, with a view to disseminate the information in FAOSTAT. It describes methods for estimating greenhouse gas (GHG) emissions in households, which include fossil fuel-based energy use and non-renewable (i.e. beyond sustainable wood harvesting levels) woodfuel use.

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