How do agri-food systems contribute to climate change?


Agriculture and food security are exposed to impacts and risks related to the changing climate in several ways. On the other hand, agriculture and food production activities are also responsible for part of the greenhouse gas emissions that in turn cause climate change.

According to the latest conclusions by the Intergovernmental Panel on Climate Change, agriculture, together with deforestation and other human actions that change the way land is used (codename: AFOLU, Agriculture, Forestry and Other Land Use), accounts for about a quarter of emissions contributing to climate change.

IPCC-WGIII-AR5-2014-emissions-by-economic-sectors-fig-TS3 - Crop
Greenhouse Gas Emissions by Economic Sectors. Fig. TS.3, IPCC AR5 WGIII, Mitigation of Climate Change, Technical Summary, 2014

GHG emissions from farming activities consist mainly of non-CO2 gases: methane (CH4) and nitrous oxide (N2O) produced by bacterial decomposition processes in cropland and grassland soils and by livestock’s digestive systems.

The latest estimates released in 2014 by the UN Food and…

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