Global loss of tropical and boreal forests surged to a record high last year as unprecedented temperatures fueled fires, releasing more than four times the emissions of all air travel in 2023.
That’s according to the latest annual assessment by Global Forest Watch, a platform run by the nonprofit World Resources Institute, which drew on data from the University of Maryland.
“It’s a global red alert,” Elizabeth Goldman, co-director of Global Forest Watch, said in a statement. “This level of forest loss is unlike anything we’ve seen in over 20 years.”
Tropical primary forests, defined as those that have experienced little to no human disturbance, store billions of tons of carbon. They also help regulate weather, recycle water and offer a home to millions of species of plants and animals. At the 2021 United Nations climate conference, COP26, more than 140 nations pledged to halt the loss of all types of forest by the end of the decade.
However, the latest data shows that many of the countries that signed the deforestation pledge are falling woefully short on their commitment. The loss of tropical primary forests reached 6.7 million hectares last year. That’s almost double the loss in 2023 and roughly equivalent to 18 soccer fields disappearing every minute.
Fifteen of the 20 countries with the largest area of primary forests that signed the 2021 forest pledge are now losing trees faster than they were at that time, according to the World Resources Institute.
All of this is occurring after the hottest year on record, with Earth’s warming exceeding 1.5C over pre-industrial levels on an annual basis for the first time. The United Nations has warned that temperatures will continue to rise unless drastic action is taken to curb greenhouse gas emissions. Globally, fires emitted 4.1 billion metric tons of greenhouse gas emissions last year, adding to planetary heating.
Outside of the tropics, fires in Canada and Russia also contributed to the loss of tree cover last year equal to the size of Italy, WRI reported. Tree-cover loss refers to the removal of tree canopy, which is the branches and leaves at the top of a tree.
“We are in a new phase where it’s not just clearing for agriculture that’s the main driver,” said Rod Taylor, director of forests and nature conservation at WRI. “Now we have this new amplifying effect, which is the real climate change feedback loop where fires are just much more intense and much more ferocious than they’ve ever been.”
Brazil, host of this year’s COP30 climate summit, accounted for 42% of all tropical primary-forest loss last year, according to WRI. That’s more than any other nation. WRI cited fires, fueled by the worst drought on record, as well as industrial soy and cattle farming, as the main causes of destruction in the country.
“Without sustained investment in community fire prevention, stronger state-level enforcement and a focus on sustainable land use, hard-won gains risk being undone,” said Mariana Oliveira, director of the forests and land-use program at WRI Brasil.
Cutting deforestation and raising funds to do so are among the top priorities for COP30, which is scheduled for November in the Amazonian city of Belém. Brazil aims to launch a $125 billion fund at the summit that would provide financing to nations to protect their forests.
Bolivia, Colombia, the Democratic Republic of Congo and the Republic of Congo are other countries experiencing dramatic forest loss, according to WRI. By contrast, Indonesia and Malaysia reduced their rates of forest loss, mainly because of land-restoration programs and fire-control efforts.
Globally, fires overtook agriculture as the leading cause of forest loss, accounting for almost half of the damage, up from an average of about 20% in previous years, according to WRI. Other contributors include illegal mining and coca production in Colombia, and conflict and poverty in DRC.
Photograph: Burnt trees after a wildfire in the Baie-James region of Quebec, Canada in June 2024. Photo credit: Brett Gundlock/Bloomberg
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