Forests save countries millions by absorbing atmospheric carbon © Martin Mecnarowski / Shutterstock

Protecting nature has bigger economic benefit than exploiting it

A new study analysing sites across the world has found that in most cases, economic benefits are higher when habitats are conserved or restored rather than converted to human uses such as farming. These findings add important ammunition to our fight for a greener future.

By Jessica Law

One of the main arguments some people make against conserving nature is that doing so stands in the way of economic growth. Natural habitats are often seen as useless and “unproductive” (in the words of Brazil’s President Bolsonaro) – frivolous luxuries preserved for the enjoyment of a privileged few. Why leave a forest intact when it could be logged or converted to cropland? Why deprive local people of profits when there’s money to be made?

We conservationists have known for decades that this is a ruinously short-sighted point of view – countless disasters, from the American dustbowl of the 1930s to the Sierra Leone mudslide of 2017, have shown that once trees have been felled or cropland expanded, the land is less able to purify water, absorb carbon, bind the soil or provide countless other services that healthy ecosystems perform. When this happens, big corporations are often left unruffled, while ordinary local people feel the full force of this devastation. And on a planet that’s careening towards climate emergency, we need every carbon sink we can get.

We’ve known about the intrinsic value of healthy ecosystems for a while, but in the minds of many, this is seen as an abstract concept, difficult to picture in a world of hard, cold cash. But this month, the biggest study of its kind has shown that conserving or restoring natural sites typically provides a larger economic benefit than exploiting them.

A research team led by the RSPB (BirdLife in the UK), and involving the University of Cambridge, BirdLife International and other institutions, analysed dozens of sites across six continents. Many of them are classed as Key Biodiversity Areas, their locations ranging from Kenya to Fiji and China to the UK. The team assessed the value of the ecosystem services provided by each site – such as carbon storage and flood protection – under a scenario where it is conserved or restored. They compared this with the expected benefits if the site had been converted to the most plausible human use (e.g. agriculture or logging). In the vast majority of cases, conserving or restoring the site was found to deliver greater benefits.

One of the most significant benefits comes from the regulation of the greenhouse gases driving climate change, including carbon. Researchers analysed 24 of the sites in greater detail, finding that if each tonne of carbon released into the atmosphere carries a cost of $31 to global society (a highly conservative estimate), then over 70% of the sites have greater monetary value as when conserved or restored. This included 100% of forest sites.

Even if carbon is removed completely from calculations, researchers found that almost half the sites are still worth more to us in their natural form. “Stemming biodiversity loss is a vital goal in itself, but nature also fundamentally underpins human wellbeing,” says lead author Dr Richard Bradbury from the RSPB, and honorary fellow at the University of Cambridge. He continues, “Even if you are only interested in dollars and cents, we can see that conserving and restoring nature is now very often the best bet for human prosperity.” In other words, safeguarding these sites wouldn’t just save money – it would also drastically increase human wellbeing, as well as providing incomes from industries such as ecotourism and nature-based recreation.

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