Diet change needed to save vast areas of tropics, study warns

agricultural land
Credit: CC0 Public Domain

One quarter of the world's tropical land could disappear by the end of the century unless meat and dairy consumption falls, researchers have warned.

If the global demand for animal products continues to grow, large swathes of natural land will vanish potentially leading to widespread loss of species and their habitats.

Some nine per cent of natural land—95 per cent of which is in the tropics—could go within 80 years unless global dietary habits change, the scientists say.

Researchers at the University of Edinburgh and Karlsruhe Institute of Technology studied the impact of consumption trends on biodiverse regions—areas that have a wealth of mammals, birds, amphibians and plant life.

They found that rapid increases in meat and milk production result in sharp rises in in that harbour high levels of biodiversity.

As incomes increase across the globe, consumption has shifted from staples such as starchy roots and pulses to meat, milk, and refined sugars.

Meat and dairy production is associated with higher land and water use and higher greenhouse gas emissions than any other foods.

By replacing with plant-based alternatives, they predict that the global demand for agricultural land could be reduced by 11 per cent.

Researchers also found that industrial feed systems reduce agricultural expansion but may increase environmental degradation due to agricultural pollutants such as fertiliser.

The study comes after the Intergovernmental Panel on Climate Change last week published a special report that identified reducing meat consumption as an important focus for climate change mitigation.

Lead author Dr. Roslyn Henry, said, "Reducing meat and will have positive effects on greenhouse gas emissions and human health. It will also help biodiversity, which must be conserved to ensure the world's growing population is fed. Changing our diets will lead to a more and complement food security goals while addressing global food inequalities."

More information: Roslyn C. Henry et al, The role of global dietary transitions for safeguarding biodiversity, Global Environmental Change (2019). DOI: 10.1016/j.gloenvcha.2019.101956

Citation: Diet change needed to save vast areas of tropics, study warns (2019, August 12) retrieved 29 November 2023 from
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.

Explore further

UN climate change report: Land clearing and farming contribute a third of the world's greenhouse gases


Feedback to editors