Deforestation — the permanent conversion of forest to other land uses — is the single largest driver of terrestrial biodiversity loss. Tropical rainforests cover just 18 per cent of Earth's land area yet harbour 62 per cent of all terrestrial vertebrate species. Since the dawn of agriculture, the world has lost one-third of its forests — two billion hectares — and tropical deforestation continues at roughly 10 million hectares per year. The Amazon rainforest, home to 10 per cent of all known species, has lost approximately 17–20 per cent of its original cover and is approaching a tipping point beyond which it could irreversibly shift from rainforest to savanna.
Tropical deforestation — driven overwhelmingly by cattle ranching, soy and palm oil — threatens more than one million species and contributes 6.5 per cent of global carbon emissions. But recent evidence offers hope: Brazil's Amazon deforestation fell 68 per cent in 2025, and Indigenous-managed territories show deforestation rates 66 per cent lower than surrounding areas. The EU Deforestation Regulation and UK due diligence laws are beginning to reshape supply chains.
The FAO defines deforestation as the conversion of forest to other land use — a permanent transformation, not temporary disturbance. It is distinct from forest degradation, where a forest loses its ecological integrity while remaining structurally intact, and from fragmentation, where continuous forest is broken into isolated patches that can no longer sustain many of the species they once supported. All three processes undermine biodiversity, but deforestation is the most absolute: what was forest becomes farmland, pasture or urban sprawl, and the habitat is gone.
Ten thousand years ago, forests covered roughly 57 per cent of the world's habitable land — approximately six billion hectares. Today, only four billion hectares remain, a loss of one-third. Strikingly, half of all historical deforestation occurred in the century after 1900, driven by mechanised agriculture, globalised commodity chains and rapid population growth. To learn more about the broader context of habitat destruction, see our dedicated guide.
The FAO's Global Forest Resources Assessment 2025 — the most comprehensive global dataset — confirms that while deforestation continues, the rate of loss shows signs of deceleration in some regions, particularly Latin America. However, the picture varies dramatically by geography.
In the Amazon, 2024 was the fifth highest year on record for deforestation at 1.7 million hectares — a 34 per cent increase from 2023 but still 12 per cent below the 2022 peak. Fire impacts were even more alarming: 2.8 million hectares of primary Amazon forest burned in 2024, shattering the previous record set in 2016. Combined, deforestation and fire affected 4.5 million hectares of primary Amazon forest in a single year.
The most striking recent development is Brazil's dramatic reversal in 2025. Data from the Amazon Regional Observatory show a 68 per cent decline in deforestation and a 48 per cent reduction in forest degradation, potentially the lowest rates since satellite monitoring began in 1988. However, this improvement in Brazil has been partially offset by record deforestation in Bolivia (476,000 hectares in 2024, its highest ever) and an 82 per cent spike in Colombia.
Tropical rainforests are the most species-dense ecosystems on Earth. They cover just 18 per cent of the planet's land area yet harbour 62 per cent of all terrestrial vertebrate species — more than twice the number found in any other biome. The concentration is even more extreme in specific groups: 63 per cent of mammals, 72 per cent of birds and 76 per cent of amphibians are found in tropical forests.
Endemism — the phenomenon of species existing nowhere else — reaches extraordinary levels. Between 17 and 29 per cent of all terrestrial vertebrates are endemic to tropical forests, with amphibians showing the most striking figures: 33 to 44 per cent of all amphibian species on Earth exist only within these ecosystems. This means that deforestation does not simply reduce populations; it eliminates species entirely.
The vertical complexity of rainforests amplifies this diversity. From the emergent layer at 35–65 metres to the perpetually shaded forest floor, each stratum supports distinct ecological communities with specialised species adapted to particular conditions of light, humidity and food availability. A single hectare of tropical rainforest may contain over 400 tree species — more than exist in the entire British Isles. Scientists estimate that tropical forests hold the majority of Earth's undiscovered species, with countries like Brazil, Indonesia, Madagascar and Colombia harbouring roughly a quarter of all potential species discoveries.
The Amazon is the world's largest tropical rainforest, spanning 5.5 million square kilometres across nine countries — nearly 60 per cent within Brazil. It is thought to be home to 10 per cent of all known species on Earth, supports 47 million people including 2.2 million Indigenous people speaking around 300 languages, and stores between 150 and 200 billion tonnes of carbon.
The forest also functions as a vast hydrological pump. Trees transpire 20 billion tonnes of water daily into the atmosphere, generating "flying rivers" that carry moisture westward across the continent. This recycled precipitation — cycling up to five or six times before reaching the Andes — sustains rainfall patterns across South America, including the agricultural heartlands of Brazil, Paraguay and Argentina.
Since 2002, cumulative primary forest deforestation across the Amazon totals 33.7 million hectares — an area exceeding the size of New Mexico. Total historical loss stands at approximately 17–20 per cent of the original forest. Research published in Geophysical Research Letters identifies tipping points at 45 per cent and 55 per cent deforestation (depending on concurrent climate change scenarios), beyond which the Amazon could undergo a catastrophic shift from rainforest to degraded savanna as the hydrological system collapses.
The 2023 drought provided a preview. Between September and November 2023, the Amazon released an estimated 10 to 170 million tonnes of carbon — momentarily shifting from carbon sink to carbon source. This contributed up to 30 per cent of total tropical net carbon loss that year, demonstrating how fragile the forest's climate-regulating function has become. For more on how climate change interacts with biodiversity, see our detailed guide.
| Region | Scale | Key Biodiversity | Primary Threats |
|---|---|---|---|
| Congo Basin | 500M acres (6 countries) | 10,000 plant species (30% endemic), gorillas, bonobos, forest elephants | Oil/gas (39% of intact forest), mining (27%), logging |
| Southeast Asia | Indonesia: 3% of world's forests | Orangutans, tigers, Rafflesia, peatland species | Palm oil (60%), logging, peatland drainage, mining |
| Atlantic Forest | ~24% of original cover remains | 20,000+ plant species (40% endemic), golden lion tamarin | Agriculture (virtually 100% illegal), urbanisation |
| Mesoamerican Corridor | 8 countries, 7–10% of world's species | Quetzals, jaguars, 19 ecoregions | Cattle, crop expansion, fragmentation |
| Madagascar | 90% wildlife endemic | Lemurs, >50% of world's chameleons | Slash-and-burn, illegal logging, agricultural expansion |
The Congo Basin — the world's second-largest tropical forest — faces escalating threats from fossil fuel and mining expansion. Over 72 million hectares (39 per cent of intact tropical forest in the region) now overlap with oil and gas blocks, while mining concessions cover nearly 48 million hectares. Between 2013 and 2023, 742 new species were discovered here, illustrating how much remains unknown.
In Southeast Asia, deforestation generates over one-third of global carbon emissions from forest loss despite the region holding only three per cent of the world's forests. Palm oil expansion continues to threaten critically endangered Bornean orangutan habitat — as recently as March 2026, a palm oil firm cleared over 3,000 hectares within a UNESCO biosphere reserve in Indonesian Borneo.
Brazil's Atlantic Forest, one of the world's richest biodiversity hotspots, retains only 24 per cent of its original cover. Analysis of over 10,000 deforestation events between 2010 and 2020 found that 18,629 hectares were lost annually — nearly all of it illegal under Brazilian law.
Agriculture overwhelmingly dominates. Between 2001 and 2015, the World Resources Institute tracked commodity-driven deforestation and found a clear hierarchy of destruction.
| Commodity | Area Deforested (2001–2015) | Share of Agri-Driven Loss | Primary Region |
|---|---|---|---|
| Cattle ranching | 45.1 million ha | 36% | Brazil (48%), Paraguay, Colombia |
| Oil palm | 10.5 million ha | 8% | Indonesia, Malaysia |
| Soy | 8.2 million ha | 7% | Brazil (61%), Argentina, Bolivia |
| Cocoa | ~2 million ha | ~2% | Côte d'Ivoire, Ghana |
| Plantation rubber | ~2 million ha | ~2% | Southeast Asia |
Cattle ranching alone destroyed 45.1 million hectares of forest in just 15 years — an area larger than Japan. In the Amazon specifically, 62 per cent of all deforested land has been converted to cattle pasture, with over 80 million head of cattle now grazing in the Legal Amazon. Much of this is driven by land speculation: forested land has minimal value, while cleared pasture appreciates rapidly.
Beyond agriculture, illegal logging operates across global supply chains, infrastructure development opens remote forests to colonisation, and mining affects 1.4 million hectares globally — including 450,000 hectares of tropical primary rainforest and 260,000 hectares on Indigenous lands. Fire, though natural in some ecosystems, has been weaponised as a clearance tool in rainforests where humidity normally prevents burning. For a broader look at the causes of biodiversity loss, see our pillar guide.
The IUCN Red List (2025) now documents over 47,000 species threatened with extinction — 28 per cent of all assessed species — with deforestation identified as a primary threat driver. Approximately 80 per cent of all threatened terrestrial mammals and birds are affected by agriculturally driven habitat loss.
If tropical primary forest loss continues at its current rate of roughly 75,000 square kilometres per year, researchers estimate global richness declines of 44 per cent in ants, 30 per cent in dung beetles and 20 per cent in trees. These projected extinction rates are two or more orders of magnitude higher than four of five previous mass extinction events.
The Amazon's most emblematic species illustrate the crisis. Jaguars now occupy less than half their historical range. Amazon river dolphins (pink river dolphins) are listed as Endangered, with populations halving every decade — females bear only one calf every four to five years, making recovery painfully slow. Harpy eagles, once widespread, now inhabit only small Amazon pockets. South American tapirs, keystone seed dispersers essential for forest regeneration, face compounding threats from habitat loss and poaching.
Even forests that remain standing suffer cascading ecological damage. Fragmentation isolates populations, reducing genetic diversity and increasing vulnerability to disease and environmental shocks. Edge effects — altered light, temperature and humidity at forest margins — extend 300–1,000 metres into fragments, functionally shrinking them far below their apparent size.
Defaunation — the loss of large animals from otherwise intact forest — may be the most insidious consequence. Hunting exerts the strongest negative impact on large mammal populations, removing apex predators and large seed dispersers. Without these animals, seed dispersal distances halve, fruit production declines, and forest composition shifts toward species with wind-dispersed seeds, fundamentally altering ecosystem structure. For more on the link between habitat loss and species decline, see our guides to endangered species and species extinction.
Deforestation for agriculture emits 2.6 billion tonnes of CO₂ per year — 6.5 per cent of global carbon emissions. Brazil and Indonesia together account for almost half. The relationship between deforestation and climate is not linear but self-reinforcing: deforestation causes roughly four per cent of regional drought, while drought triggers 0.13 per cent additional deforestation per millimetre of rainfall loss. A 200-millimetre rainfall reduction would generate a 26 per cent increase in deforestation through this feedback loop alone.
Globally, forests absorb twice as much CO₂ as they emit — a net sink of 7.6 billion metric tonnes per year. But this aggregate masks critical regional divergence. Southeast Asian forests have already become net carbon sources due to plantation clearance and peatland drainage. The Congo Basin remains the world's strongest tropical carbon sink, sequestering 600 million metric tonnes more than it emits annually — equivalent to one-third of US transportation emissions. The Amazon teeters between the two, with the 2023 drought demonstrating how quickly it can flip from sink to source.
The evidence is unequivocal: Indigenous-managed territories with legal recognition show deforestation rates 66 per cent lower than adjacent unprotected areas. Between 2001 and 2021, formally recognised Indigenous forests acted as robust carbon sinks, removing 460 million metric tonnes of CO₂ annually while emitting only 120 million — a net sequestration of 340 million metric tonnes, equivalent to the UK's entire annual fossil fuel emissions.
A study of 245 Indigenous territories in the Brazilian Amazon found that legal recognition led to a 66% decrease in border deforestation. Communities equipped with satellite monitoring via smartphones saw 52% less deforestation than comparable communities without such tools. Over 33 years, titled Indigenous territories saw 23% greater secondary forest regrowth than adjacent privately owned land.
The EU Deforestation Regulation (EUDR), adopted in 2023, requires companies to prove that products sold in the EU do not originate from recently deforested land. It targets cattle, soy, palm oil, cocoa, coffee, rubber and timber, with full application from December 2026. The regulation aims to cut EU-linked carbon emissions by at least 32 million tonnes per year.
The UK's Environment Act 2021 (Schedule 17) establishes due diligence requirements for businesses using forest risk commodities. Companies must identify, assess and mitigate the risk that commodities were sourced from illegally occupied or used land. Research suggests this framework covers 70 per cent of the UK's total deforestation footprint through its initial coverage of palm oil, beef, soy and cocoa.
The Bonn Challenge targets 350 million hectares of degraded land under restoration by 2030. While regenerating forests absorb substantial CO₂, recent analysis shows they also release methane and nitrous oxide, reducing climate benefits by approximately 10 per cent compared to simple calculations — though restoration still provides far greater climate benefits than maintaining agricultural land. For the UK's own restoration efforts, see our guide to biodiversity and conservation.
The UK's deforestation footprint through commodity imports averaged 15,200 hectares annually between 2019 and 2021, placing it sixth among European nations. The primary commodities driving this exposure are cattle products (25.2 per cent), cocoa (22.9 per cent) and palm oil (13.9 per cent), sourced predominantly from Brazil, Côte d'Ivoire and Indonesia. Total UK exposure decreased by 32 per cent between 2014 and 2021, primarily due to falling Indonesian palm oil deforestation rates, though recent data suggest rates are rising again.
Domestically, the UK committed to planting 30,000 hectares of new woodland annually by 2025 as part of its net-zero strategy. Reality has fallen far short: England planted just 673 hectares in 2020–21, rising to 7,500 hectares in 2024–25 but still dramatically below target. Carbon Brief estimates that the UK has missed its tree-planting targets by a forest the "size of Birmingham." Barriers include insufficient funding, limited nursery capacity and insufficient demand for domestic timber.
Every UK consumer is connected to tropical deforestation through daily purchases. The beef in a fast-food burger, the chocolate in a biscuit, the palm oil in a shampoo — each may carry an invisible link to cleared forest. The UK's due diligence legislation, once fully implemented, will bring unprecedented transparency to these supply chains, but consumer choices remain a powerful lever for change.
The world has lost approximately one-third of its forests — from roughly six billion hectares 10,000 years ago to four billion hectares today. Half of all historical forest loss occurred in the single century after 1900. Tropical forests continue to be lost at approximately 10 million hectares per year, though the rate has shown signs of slowing in some regions, particularly Brazil.
Tropical rainforests cover just 18 per cent of Earth's land area but harbour 62 per cent of all terrestrial vertebrate species — including 63 per cent of mammals, 72 per cent of birds and 76 per cent of amphibians. Their vertical stratification creates multiple habitat layers from the forest floor to the emergent canopy, supporting distinct ecological communities at each level. Between 17 and 29 per cent of all terrestrial vertebrates are found exclusively in tropical forests.
Research identifies tipping points at 45 per cent and 55 per cent deforestation (depending on climate change scenarios), beyond which the Amazon could irreversibly shift from rainforest to degraded savanna. Current cumulative deforestation stands at approximately 17–20 per cent. The mechanism involves the collapse of the forest's hydrological recycling system — the "flying rivers" that carry moisture westward across the continent — which would in turn reduce rainfall, increase drought and trigger further forest die-off.
Agricultural expansion, particularly cattle ranching, is overwhelmingly the largest driver. Between 2001 and 2015, cattle ranching alone accounted for 45.1 million hectares of deforested land — 36 per cent of all agriculture-linked tree cover loss. Oil palm (10.5 million hectares), soy (8.2 million hectares), cocoa and rubber each contributed smaller but significant shares. In the Brazilian Amazon specifically, 62 per cent of all deforested land has been converted to cattle pasture.
The UK's deforestation footprint through commodity imports averaged 15,200 hectares annually between 2019 and 2021. The primary drivers are cattle products (25.2 per cent of exposure), cocoa (22.9 per cent) and palm oil (13.9 per cent), sourced mainly from Brazil, Côte d'Ivoire and Indonesia. The UK's Environment Act 2021 establishes due diligence requirements for companies using forest risk commodities, expected to cover 70 per cent of the UK's total deforestation footprint.
Yes — the evidence is compelling. Indigenous territories with formal legal recognition show deforestation rates 66 per cent lower than adjacent unprotected areas. Between 2001 and 2021, recognised Indigenous forests removed a net 340 million metric tonnes of CO₂ annually — equivalent to the UK's entire fossil fuel emissions. Communities equipped with satellite monitoring technology experienced 52 per cent less deforestation than comparable groups without such tools.
The EU Deforestation Regulation (EUDR), adopted in 2023, requires companies to prove that products placed on the EU market — including cattle, soy, palm oil, cocoa, coffee, rubber and timber — do not originate from land deforested after December 2020. Full application begins in December 2026 for large and medium operators. The regulation aims to reduce EU-linked greenhouse gas emissions by at least 32 million tonnes per year and reduce biodiversity loss through supply chain accountability.
Deforestation is not an abstract problem occurring in distant countries — it is driven by global supply chains that connect UK supermarket shelves to cleared Amazon pasture. The statistics are sobering: one-third of the world's forests gone, 47,000 species threatened, 6.5 per cent of global emissions from forest clearance alone. The Amazon's tipping point looms as both a scientific warning and a moral ultimatum.
Yet the evidence also demonstrates that reversal is possible. Brazil's 68 per cent deforestation reduction in 2025 proves that political commitment backed by enforcement works. Indigenous land stewardship — the most effective forest protection mechanism yet identified — achieves results that vastly outperform conventional approaches. Regulatory frameworks like the EUDR and UK due diligence laws are beginning to hold supply chains accountable.
The question is no longer whether we know how to stop deforestation, but whether we choose to. Every commodity purchase, every policy decision and every investment in forest protection shifts the balance. The forests that remain harbour half the planet's terrestrial life and regulate the climate systems on which all of us depend. Their survival is not optional.
For related reading, explore our guides to habitat destruction, UK wildlife decline, ecosystem services and Biodiversity Net Gain.