We look forward to seeing you!
Small table corner calculation:
He says that in Switzerland, between 2006 and 2020, agricultural land stored 1% of carbon in 20 cm of soil, this corresponds to 2000 cubic meters / hectare
Suddenly with 1kg per m250 of soil weight. If we take + 3% of C stored over 1 years, that makes 14 kg per m12,5 of soil, 3T of carbon per ha. When we add the 25 oxygen atoms, this represents an equivalent of 2T of CO90 stored per hectare.
The French UAA represents around 29 million hectares
https://fr.wikipedia.org/wiki/Surface_agricole_utilisée.
In the video, even permanent grasslands are counted, taking the same basis:
90 X 29/14 X 10e12 = Unless I'm mistaken, in France, an average of 186.4 Gt of CO2 stored per year.
Avalis writes:
a hectare of wheat or corn captures 4 to 8 times more CO2 than it is emitted to produce it.
At harvest, this process made it possible to manufacture 15 to 20 tonnes of biomass per hectare (50% in the form of grains, 50% in the form of straw and roots).
After harvesting, the straws that are incorporated into the soil decompose into humus, a guarantee of soil fertility and a carbon reservoir.
For example, 7,5 to 10 tons of straw and roots produce 1,1 to 1,5 tons of stable humus in the soil. This represents a stock of 450 to 600 kg of carbon, or 1 to 650 kg eq CO2 per hectare. We thus speak of “carbon sinks”.
https://www.arvalis-infos.fr/valoriser- ... s-cultures