Agriculture and Climate Change
As we stand agriculture has caused 476 billion tons of carbon to be stored in the atmosphere, that is almost double the amount caused by all man's other activities like burning fossil fuels. Contrary to what the anti-meat movement would have you believe cows burping is not the major contributor to this figure but it is rather the catastrophic loss of soil organic mater due to ploughing, chemical application, poor grazing practices and erosion. "Globally, 75 billion tonnes of soil are lost from arable land each year and an estimated $400 billion in agricultural production is lost." (Food and Agriculture Organization of the UN)
"when we eat from the industrial-food system, we are eating oil and spewing greenhouse gases." - Michael Pollan
History shows us that civilisations that destroyed their soils soon collapse. As we stand we are fast on the way to repeating this, all in the name of fuelling a global food industry that distributes largely poor value food. Moreover Industrial Agriculture has no solution for for this soil, water and carbon problem it has largely created.
"Soil is lost not because we farm, it's lost because of how we farm." - Professor David Montgomery
However, unlike other major greenhouse gas producers, agriculture has the capacity to not only to reduce its carbon emissions but to draw carbon down from the atmosphere and store it back in the soil - where it should have been all along. This might sound like magic but by changing from Industrial to Regenerative Agriculture it is as real as the erosion and degradation we are currently experiencing. This magic happens via the miracle of photosynthesis and microbial symbiosis in the soil which together result in carbon being taken out of the air and stored underground. Fortunately our understanding of soil biology has advanced tremendously in recent years meaning that Regenerative farmers can produce yields that compete with Industrial farmers while reducing agriculture's carbon footprint.
The Liquid Carbon Pathway - Carbon is drawn from the atmosphere and converted into liquid sugars up to 40% of which are 'fed' to soil microbiology where they form humus, stable carbon that remains in the soil for decades.
This draw down of carbon is crucial because even if we stopped all fossil fuel emissions of carbon tomorrow, which we of course can't do, legacy carbon in the atmosphere would result in the planet continuing to get hotter and suffering from the onslaught of climate change.
Aside from drawdown Regenerative Agriculture offers another solution to climate change, it fixes the small water cycle. Together with a healthy small water cycle and healthy soils (Soil Carbon Sponge) the photosynthetic potential of the soil is maximised. Photosynthesis cools the planet via transpiration - nature's air-conditioner - take for instance the Amazon, more water goes into the atmosphere everyday than down the river.
"Soils have to be integral to any strategy of mitigating global warming and improving the environment." - Professor Rattan Lal
"When farmers restore fertility to the land, this helps feed the world, cool the planet, reduce pollution, and return profitability to family farms." - Professor David Montgomery
Video: Carbon Drawdown
Impacts of Climate Change on Agriculture
The image below showing how climate change is predicted to impact on agricultural yields does not paint a pretty picture for Africa. We need to start emitting less and drawing down more carbon and in the process make our soils more drought resistant.
Video: 4 per 1000 Initiative - boost carbon storage in agricultural soils by 0.4% each year
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