Destruction of our soils more serious than climate change
An international soil scientist says restocking the world’s arable soil with carbon is more important than climate change. Dr John Baker says too many people around the world treat soil like dirt when it should be revered because “our lives depend on it.” He believes that because soil isn’t sexy, is not on our radar and is metaphorically beneath us, it’s taken for granted by many farmers and ignored by politicians and city dwellers. “Instead people are besotted by climate change when improving soil health and feeding the world is more important,” he says. “Climate change, while serious, is not going to starve you but the rape of our soil over the last 1,000 years through traditional tillage methods, is already leading to reduced crop yields and will eventually result in famine and malnutrition.” Dr Baker says alarming figures provided by the United National Food and Agriculture Organisation (FAO) and the UK Farmers Weekly suggest the quality of soil is rapidly diminishing. FAO predicts the world, on average, has 60 more years of growing crops left while the Farmers Weekly claims that only 100 harvests remain in the UK. Eighty percent of the world’s food comes from crops. Ironically climate change and soil health are closely related and can benefit each other Dr Baker, who has a MAgrSc in soil science and Ph.D in agricultural engineering from Massey University, New Zealand, explains. “Soil health is strongly influenced by the amount of carbon in the soil. That carbon has been oxidised by conventional tillage (ploughing) and even minimum tillage and discharged as carbon dioxide back into the atmosphere. Tillage does nothing to recapture it,” he says. “As a result the carbon that was in the soil is now in the atmosphere and contributes to climate change when it should be back […]