Illegal mining has been becoming more and more  in the Amazon for decades, destroying  Indigenous Lands and other different protected areas, as well as threatening the lives and health of the more than 30 million people who live in  the region, normally  through indigenous people , through the contamination by mercury and the destruction of the forest. 

Inside the Yanomami Territory alone, there are 75 airstrips. The presence of these miners seriously affect the wildlife in the amazon the miners hunt monkeys, armadillos and capybara's. most  of these species eat  fruits and play big roles in seed dispersal and pollination processes. 

Agriculture is the second main cause of forest conversion in the Amazon. In addition to deforestation, agricultural practices tend to cause significant soil erosion and river siltation, as well as aquatic contamination with agrochemicals. 

Brazil has 67% of the crop area of the Amazon, followed by Peru (14%) and Bolivia (9%)  Soy production in the Brazilian Amazon tripled from 1990 to 2006. Other fields  such as sugar cane and palm oil for bio fuels, as well as cotton and rice, are expanding as well.

Historically, people have been creating controlled burns in The Amazon for thousands of years,  to clear space for agriculture, hunt game, encourage economic wild species, and fertilize soil. 

Today, some indigenous people and local communities continue to practice sustainable burning for these purposes, particularly in savanna and dry  regions of Amazonia, where fire is also be used as a forest management tool to limit the potential for big strong  fires.

Despite the  long history of anthropogenic burning, most Amazon fires that occur today are unsustainable and dangerous to the Amazon and its indigenous  people. Due to their large-scale and uncontrolled nature, fires in the Amazon rain forest disrupt local weather patterns, and very quickly  release greenhouse gases, threaten biodiversity, and endanger human health through air pollution.

https://amazonaid.org/threats-to-the-amazon/amazon-fires/