Does increasing farm productivity relieve pressure on remaining natural areas? A new study suggests no

Increasing farming intensity increases pressure to clear remnant native vegetation, a new study has shown. It is the opposite of what was expected.

The ground-breaking international collaboration between researchers in Germany, Belgium, Spain and Charles Darwin University (CDU) in Australia found that deforestation was highest in export-focused countries.

CDU Conservation and Sustainable Livelihoods Professor Stephen Garnett, who participated in the research, said it had been hoped farmers would be satisfied with less land if they could earn more per hectare.

“The finding is alarming,” said Professor Garnett.

“Policymakers have been hoping intensification can help protect remaining biodiversity.”

The researchers used maps of forest loss between 2000 and 2020 and agricultural production statistics to analyse the relationship between deforestation and intensification.

The team based their study on tropical dry forests around the world.

Lead author, Marie Pratzer from Humboldt University in Berlin, said tropical dry forests are crucial for global biodiversity, carbon storage, and the livelihoods of hundreds of millions of people.      

“This is a significant finding,” Ms Pratzer said.

“It shows that policies that aim to increase agricultural intensity will not magically protect forests.”

The researchers did find an exception to the trends they observed.

On the lands of Indigenous peoples, increasing returns from existing farmland did reduce the amount of new land cleared, as had been hoped.

“We found out that farmers trying to meet their own needs cleared less land,” said Professor Garnett.

“Only farmers exporting their produce wanted ever more land.”

Professor Garnett says the findings are relevant to Australia given pressures to clear land for agriculture in northern Australia.

“Economic pressures to maximise short-term gains from land are very high.

“Only well-enforced land-use zoning, and a potentially a stronger Indigenous voice in land use decisions, will ensure the existing values of natural lands are not lost."