Zero-Deforestation Land Use Scenarios in the Brazilian Cerrado: Pasture Intensification for Agriculture, Livestock and Regeneration

The Brazilian Cerrado is a vast, species-rich savanna that serves as a critical reservoir for biodiversity and a major engine for the nation's agriculture. Within this landscape, the soil acts as a massive, invisible bank for carbon, a greenhouse gas that traps heat in the atmosphere. When land is cleared or degraded, this carbon can escape into the air, but when land is managed well or allowed to recover, the soil and plants can pull that carbon back out and store it. For decades, the Cerrado has faced a difficult choice: expand farming to feed a growing population, or protect the native vegetation to fight climate change. This tension has led to a common assumption that we must choose one path or the other, often resulting in the clearing of more forests and savannas to make room for crops and cattle.

A new study challenges this binary view by asking a different question: can we get more food from the land we already have, rather than taking more land? The researchers focused on the Cerrado's pastures, which cover about a quarter of the biome. Much of this grassland is in poor condition, producing little forage and storing less carbon than it could. By using computer models to simulate how these pastures would respond to better management, the team explored whether intensifying livestock production on existing degraded land could free up space for both expanding soybean farming and restoring native vegetation, all without cutting down a single new tree.

The researchers built a detailed digital map of the Cerrado, covering roughly 50 million hectares of pasture. They divided these pastures into three categories based on their health: high vigor, which is lush and productive; and low or medium vigor, which are degraded and struggling. Using a sophisticated ecosystem model that tracks how carbon moves between plants, roots, and soil, they simulated what would happen if farmers upgraded the degraded pastures to high vigor. This upgrade involves better grass varieties, fertilization, and grazing management. The model calculated that if these improvements were adopted, the amount of grass available for cattle to eat would increase significantly. In fact, the improved pastures could support nearly twice as many cattle per hectare as the degraded ones.

This increase in efficiency creates a surplus of land. The study projected that by 2030, Brazil's cattle herd would grow to 61 million animals. Under the current, degraded conditions, supporting this herd would require a massive amount of pasture. However, under the improved scenario, the same number of cattle could be raised on roughly 29 million hectares of land, a reduction of about 21 million hectares compared to the baseline. This freed-up space is the key to the study's findings. The researchers allocated this surplus land to meet two other goals: expanding soybean production to meet future demand and allowing native vegetation to regenerate.

They developed two specific scenarios for how this land could be used. In the first, called the "Full Regeneration" scenario, all the land not needed for cattle or soy was allowed to return to native savanna. In the second, the "Targeted Regeneration" scenario, only the areas with the highest potential for natural recovery were restored, while the rest remained as pasture. The results showed that both approaches could meet the projected demand for beef and soy without deforestation. The Full Regeneration scenario would dedicate about 18 million hectares to restoring native plants, while the Targeted scenario would restore about 9 million hectares, keeping the rest as pasture.

The most significant outcome of these transitions is the impact on carbon storage. The study simulated the carbon levels in the soil and vegetation through the year 2050. They found that simply improving the pastures would increase the amount of carbon stored in the soil. When combined with the restoration of native vegetation, the total carbon stock in the region would rise substantially. By 2030, the Full Regeneration scenario would add 0.23 petagrams of carbon to the region's stores, and by 2050, that gain would grow to 0.47 petagrams. For context, a petagram is a unit of weight equal to one billion metric tons, meaning these changes represent hundreds of millions of tons of carbon being pulled from the atmosphere and locked into the land. Even the more conservative Targeted Regeneration scenario showed a positive gain, adding 0.29 petagrams by 2050.

The study also looked at the specific dynamics of different land uses. They found that converting pasture to soybeans under modern, no-till farming methods did not cause a massive loss of soil carbon, nor did it create a huge gain; the levels remained relatively stable compared to well-managed pastures. The real driver of carbon growth was the recovery of the native vegetation and the improvement of the grasslands. As the native plants grew back, they stored carbon in their trunks, leaves, and deep root systems, while the improved pastures continued to sequester carbon in the soil. The model showed that the carbon stored in the roots and soil of the regenerating areas would eventually outweigh the carbon stored in the visible plants above ground.

Despite these promising results, the authors are careful to note that these are simulations based on biophysical potential, not a guarantee of what will happen. The models assume that farmers will rapidly adopt improved management techniques starting in 2025, a shift that requires significant investment, technical knowledge, and financial support. The study highlights that while the land is physically capable of supporting this transition, the real barrier is human. Success depends on coordinated efforts between government credit programs, private finance, and technical assistance networks to help farmers make the switch. Without these institutional supports, the potential to meet agricultural demand while restoring the environment may remain out of reach.

Ultimately, the research demonstrates that the Cerrado does not have to choose between feeding the world and saving its ecosystems. By making the land we already use more productive, we can create room for both agriculture and nature to thrive. The study suggests that with the right management, the region can accommodate a growing cattle herd and expanding soybean production on a smaller footprint, leaving vast areas available to heal and store carbon. This integrated approach offers a path forward where food production and climate mitigation are not enemies, but partners in a sustainable future for one of the world's most important biomes.