Matt Sowerby
World Soil Day
Today we’re showing appreciation for a part of our ecosystems that often gets overlooked (teehee – see what we did there!?).
Soil may not be the most glamorous part of the biosphere. In fact, many people could be forgiven for not spending much time thinking about it at all. But the startling truth is that the ground beneath our feet contains immense richness and complexity. Soil is home to more than 25% of the planet's biodiversity — even a teaspoon of healthy soil contains more microorganisms than the number of people on Earth.
The truth is, the ground beneath our feet is vital for both our food systems and our ecosystems, providing a habitat for insects, some mammals, plants, and fungi. Over 95 percent of our food comes from soils. Besides, they supply 15 of the 18 naturally-occurring chemical elements essential to plants.
Fighting for soil health is also an important way of protecting our climate. Well-managed soil can take tons of carbon out of the atmosphere, slowing down the climate crisis. At the same time, mistreated soils realise a huge amount of carbon emissions.
Unfortunately, like much of our living planet, the health of the world’s soil is under threat, directly impacting food security. According to the UN, soil erosion may reduce up to 10% of global crop yields by 2050, which is equivalent to removing millions of acres of farmland.
Soil and Mental Health
Soil provides another great example of how planetary health and mental health are connected. Evidence is showing that spending time with soil is also fantastic for our mental health and wellbeing.
Some studies show that direct skin contact with the incredibly diverse range of microbes in the soil directly impacts our microbiome, which itself is inextricably linked with our mental functions. Some studies even stress that microbes have been found to have similar effects to antidepressants, and can help to relieve stress.
The biophilia hypothesis, popularised by American biologist E.O. Wilson, suggests that humans possess an innate tendency to seek connections with nature and other forms of life. In short, connecting with nature makes us feel good. It’s a big part of the reason why people love gardening!
Take this World Soil Day as an invitation to get off your laptop, get outside, and get your hands in the dirt. Repot a plant. Touch grass. Practice gratitude for soil, and the many amazing benefits the ground beneath us brings to our life.