Cattle ranchers are the single biggest force behind Amazon deforestation, responsible for roughly 80% of forest loss in the Brazilian Amazon. But they’re far from the only ones. Soy farmers, illegal gold miners, loggers, and land speculators all play significant roles, often operating in a chain where one group clears the way for the next.
Cattle Ranchers Drive Most of the Clearing
More than three-quarters of deforested Amazon land ends up as cattle pasture. The pattern is straightforward: trees are felled or burned, the land is converted to grass, and herds move in. Brazil is the world’s largest beef exporter, and the economics make ranching attractive even on degraded forest soil. Much of this expansion happens on the southern and eastern edges of the Amazon, in what’s known as the “arc of deforestation,” a crescent-shaped frontier where forest meets farmland.
Some of this ranching is legal, carried out on titled land with proper permits. But a large share involves land grabbing, where individuals or groups illegally claim public forest, clear it, and introduce cattle to establish a claim of productive use. The cattle themselves are sometimes secondary to the real goal: securing land title that can later be sold at a profit. This makes ranching both an economic activity and a speculative tool for converting public forest into private property.
Soy Farming and the Moratorium That Slowed It
Soybean cultivation was once a major direct driver of deforestation, but a 2006 agreement called the Soy Moratorium changed the equation. Under this deal, major soy traders agreed not to purchase soybeans grown on recently deforested Amazon land. It’s widely considered one of the most effective voluntary agreements for decoupling commodity production from forest destruction.
The moratorium didn’t cap soy production. Research shows that even extending similar protections to Brazil’s Cerrado grasslands (another threatened biome) would still allow Brazilian soybean output to grow enough to meet global demand through 2050. The key insight is that plenty of already-cleared or degraded land exists for expansion without touching intact forest. That said, soy still contributes to deforestation indirectly. As soy farms expand onto existing pastureland, they push ranchers deeper into the forest frontier, displacing the clearing rather than eliminating it.
Illegal Gold Miners on Indigenous Lands
Illegal mining operations, known in Brazil as garimpo, have surged across the Amazon in recent years. Nearly 40% of all mining sites identified across the region are five years old or younger, and on Indigenous lands that figure jumps to 62%. Gold is the primary target, and the extraction process is devastating. Miners use mercury to separate gold from sediment, poisoning rivers and the people who depend on them. Beyond mercury contamination, garimpo disrupts fishing, hunting, and freshwater supplies for surrounding communities.
The damage is concentrated in specific territories. The Kayapó, Munduruku, and Yanomami Indigenous lands account for more than 90% of the total mining footprint within Indigenous territories. In 2022, illegal mining covered 780 square kilometers inside conservation units and another 250 square kilometers inside Indigenous lands. These operations are often backed by organized networks that supply equipment, fuel, and aircraft to remote jungle sites, making them difficult to shut down permanently even when enforcement raids occur.
Roads and Land Grabbers Open the Frontier
Deforestation doesn’t happen randomly. It follows roads. When a new highway is built or an existing one is paved, a predictable wave of clearing radiates outward from it. One of the most contentious current examples is BR-319, a highway connecting the cities of Manaus and Porto Velho through the heart of the central Amazon. If paved, conservative projections estimate deforestation rates in the area would increase by 1,200% compared to 2011 levels. Land grabbing along the BR-319 corridor already runs at three times the rate seen in other parts of the Amazon.
The pattern works like this: road access lowers the cost of moving people, equipment, and cattle into previously inaccessible forest. Speculators arrive first, clearing patches and fencing them off. Loggers extract valuable hardwoods. Ranchers follow with pasture grass. By the time enforcement agencies respond, the forest is gone and the land has changed hands, sometimes multiple times. This cycle has played out along every major Amazon highway built since the 1970s.
Loggers, Both Legal and Illegal
Selective logging, where individual high-value trees are removed rather than entire plots cleared, degrades the forest without always showing up on satellite deforestation maps. Legal timber concessions exist, but illegal logging remains widespread. Loggers cut roads into intact forest to reach mahogany, ipê, and other tropical hardwoods, and those roads then serve as entry points for ranchers and miners. Even when logging doesn’t destroy the forest outright, it thins the canopy, dries out the understory, and makes the remaining trees far more vulnerable to fire.
Recent Trends in Deforestation
After years of rising destruction, deforestation in the Brazilian Amazon has been declining. Between August 2024 and July 2025, the deforested area reached 5,796 square kilometers, an 11% drop from the previous year, according to Brazil’s national space research institute (INPE). This follows a broader downward trend since the Brazilian government ramped up enforcement and reinstated environmental protections that had been weakened in prior years.
That 5,796 square kilometers is still an area larger than the entire state of Delaware cleared in a single year. And the pressures haven’t disappeared. Global demand for beef, soy, and gold continues to rise. Road-building projects remain on the table. Land prices in frontier regions keep climbing, which incentivizes further grabbing. The question of who is cutting down the Amazon doesn’t have a single answer. It’s a network of ranchers, farmers, miners, loggers, and speculators, each responding to economic incentives that, for now, still make forest destruction profitable.