Revealing land control dynamics in emerging agricultural frontiers

Area of Science:

• Environmental Science
• Geography
• Ecology

Background:

• Commodity agriculture expansion degrades ecosystems and livelihoods.
• Current monitoring misses early land access changes preceding deforestation.
• Understanding agricultural frontier dynamics is critical.

Purpose of the Study:

• Develop and apply a novel approach to detect early agricultural frontier expansion.
• Map land-claiming dynamics across the 1.1 million km² Chaco region.
• Assess the social repercussions of frontier development.

Main Methods:

• Detecting linear features indicative of land claims.
• Analyzing spatial-temporal dynamics of land claims.
• Correlating land claims with deforestation and smallholder homestead disappearance.

Main Results:

• The footprint of agricultural frontiers extends beyond deforestation, with widespread land claiming in the Chaco.
• Emergent land claiming is increasing in remote areas of the Bolivian and Paraguayan Chaco.
• A strong correlation exists between land claiming and the loss of smallholder homesteads.

Conclusions:

• Land claiming is an early indicator of agricultural frontier expansion.
• The developed approach provides a transferable template for monitoring frontier processes globally.
• Findings enable better policy targeting for sustainable land use and social equity.