young trees on mountainside
Reforestation priority region

Atlantic Rainforest

Millions of lives are dependent on this forest, but deforestation is limiting its resources. So we’re planting trees at a massive scale.

Atlantic Rainforest

145 million people. 20,000 species. This South American forest is one of the world’s most biodiverse ecosystems, second only to the Amazon. It’s a home to many and it needs protecting.

The heavy reliance on the Atlantic Rainforest’s resources, and the quickening pace of climate change, are taking a toll. Once twice the size of Texas, just 12% of the forest still stands. The ecosystem’s future relies on reforestation. 

san paulo infrastructure over forest

Connecting city life and the forest

The Atlantic Rainforest hosts 70% of Brazil’s population and 80% of its economy. The forest provides food, income opportunities, hydroelectric energy, and most of the water supply for Brazil, including major cities Rio de Janeiro and Sao Paulo. Inextricably intertwined with the community, the forest is foundational to life. 

three toed sloth

Unearthing unknown species

Of the 20,000 plants and animals found in this biodiversity hotspot, about 30% aren’t found anywhere else in the world. New species are still regularly being discovered, and reforestation secures a future in which that cycle can continue — a future in which the forest is defined by growth, not by loss. 

hands holding Brazilian nuts

Engaging skilled local leaders

There are 200 Indigenous territories within the Atlantic Rainforest, and we collaborate with our network to engage the groups that live on those lands. It’s an opportunity to achieve widespread reforestation, as research shows that Indigenous communities excel in reducing deforestation and improving forest cover.  

misty air on forest understory

Balancing the local climate

This forest is so influential on the local climate, one study found that losing one-fourth of a specific one-hectare plot of forest would increase the local temperature by 1°C. If the entire section was deforested, temperatures would increase by 4°C and threaten public health. Trees are crucial to maintaining a livable balance.  

land washout

Current State

As the forest’s health weakens and its size diminishes, what remains of the forest is highly fragmented, with most segments of contiguous forest not exceeding 50 hectares in size. The staggering rate of deforestation is a threat to the many aspects of life that are dependent on a healthy forest.  

We’re digging in to revitalize the land, focusing our reforestation efforts in Brazil, Paraguay, and Argentina. 

tree planters at work

Our Work in the Atlantic Rainforest

The Arbor Day Foundation has already committed to planting more than one million trees in the Atlantic Rainforest, and we’re not slowing down anytime soon. We hope to plant millions more in the years to come. We believe we’ll get there by collaborating with organizations deeply rooted in this region that can help ensure our work yields layers of good for communities, biodiversity, and the climate. 

bundle of saplings

Right Trees, Right Place, Right Reason

As a global nonprofit dedicated to planting trees, the Arbor Day Foundation is committed to nurturing crucial forestlands. We leverage cutting-edge science and data to identify ecosystems of global influence, like the Atlantic Rainforest. We use our exclusive forest priority index to elevate our impact through reforestation and mobilize our network of partners to help plant at the speed of a changing world.