In 2010, the production of meat and dairy products contributed to the emission of 9.8 billion tonnes (Gt) of CO2 equivalent, or 20% of anthropogenic greenhouse gas (GHG) emissions from all sectors combined.
Land-use changes, such as deforestation in the Amazon to plant soybeans, account for more than a third of GHG emissions from animal feed.
Current crop production systems are highly specialised. One of the levers that could help reduce GHG emissions would be more diversified agriculture.
The worst thing would be to reduce livestock farming in France while continuing to eat as much meat as we import.
Livestock effluent (wastewater) is responsible for about 10% of greenhouse gas (GHG) emissions from livestock farming. These emissions are linked to their storage and treatment method.
As of 1 January 2022, there were 1175 methanisation units in France, of which 805 were using agricultural effluents in 2021.
Methanisation has continues to develop over recent years, with a strong dynamic that has notably allowed the addition of 1.5 TWh installed capacity per year.It is essential to regulate this use in order to avoid competition with food.
In France, this share is limited by law to 15% of cultivated areas and is currently between 3 and 6%.
Anaïs Marechal has a PhD in Geoscience. She first became interested in earthquakes, which she studied in research laboratories and in the field for several years. In 2017, she decided to train in science journalism at ESJ Lille. Since then, she has been working as a freelance journalist for various general, specialised and professional print media where she covers climate, health and new technologies.