I was reading a great, longform article recently about deforestation in Brazil.[1] The article explained how logging is really what opens the forest up to invaders. Even when loggers selectively take a small number of trees in an attempt to keep the ecosystem intact, the logging roads they create reach deep into the jungle. These roads substantially accelerate exploitation of the jungle, including clear-cutting for farming.
This isn't obvious from satellite imagery where it would appear that the jungle is intact, but if there's a logging road nearby then you can be sure poachers, miners, and others are running around underneath the canopy.
