Enjoying EarthSky? Subscribe.

246,007 subscribers and counting ...

Feeding the world while protecting the planet

An international team of researchers has created a plan to double the world’s food production while reducing the environmental impacts of agriculture.

A team of researchers from Canada, the U.S., Sweden and Germany has come up with a global plan to double the world’s food production while reducing the environmental impacts of agriculture. Their findings were published October 12, 2011, in the journal Nature.

The problem is stark: One billion people on Earth don’t have enough food right now. As of October 15, 2011, the U.S. Census Bureau estimates the world population at 6.97 billion. It’s estimated that by 2050 there will be more than nine billion people living on the planet.

Meanwhile, current agricultural practices are among the biggest threats to the global environment. Without the development of more sustainable practices, the planet will become even less able to feed its growing population than it is today.

Percentage of land used for crops. Image Credit: Navin Ramankutty and McGill University

By combining information gathered from crop records and satellite images from around the world, the research team created new models of agricultural systems and their environmental impacts that are truly global in scope.

McGill geography professor Navin Ramankutty, one of the team leaders on the study, credits the collaboration between researchers for achieving such important results:

Lots of other scholars and thinkers have proposed solutions to global food and environmental problems. But they were often fragmented, only looking at one aspect of the problem at one time. And they often lacked the specifics and numbers to back them up. This is the first time that such a wide range of data has been brought together under one common framework, and it has allowed us to see some clear patterns. This makes it easier to develop some concrete solutions for the problems facing us.

The researchers recommend this five-point plan for feeding the world while protecting the planet:

1.  Halting farmland expansion and land clearing for agricultural purposes, particularly in the tropical rainforest. This can be achieved using incentives such as payment for ecosystem services, certification and ecotourism. This change will yield huge environmental benefits without dramatically cutting into agricultural production or economic well-being.

2.  Improving agricultural yields. Many farming regions in Africa, Latin America and Eastern Europe are not living up to their potential for producing crops -– something known as yield gaps. Improved use of existing crop varieties, better management and improved genetics could increase current food production by nearly 60 percent.

3.  Supplementing the land more strategically. Current use of water, nutrients and agricultural chemicals suffers from what the research team calls the “Goldilocks’ Problem”: too much in some places, too little in others, rarely just right. Strategic reallocation could substantially boost benefits.

4.  Shifting diets. Growing animal feed or biofuels on prime croplands, no matter how efficiently, is a drain on the human food supply. Dedicating the land to crops that humans eat could boost calories produced per person by nearly 50 percent. Even shifting nonfood uses such as animal feed or biofuel production away from prime cropland could make a big difference.

Growing animal feed or biofuels on prime croplands is a drain on the human food supply. Dedicating the land to crops that humans eat could boost calories produced per person by nearly 50 percent. Image Credit: IDS.photos

5.  Reducing waste. One-third of the food produced by farms ends up discarded, spoiled or eaten by pests. Eliminating waste in the path that food takes from farm to mouth could boost the food available for consumption by another 50 percent.

The study also outlines approaches to the problem that would help policy-makers reach informed decisions about the agricultural choices facing them. Lead author Jonathan Foley, head of the University of Minnesota’s Institute on the Environment, said:

For the first time, we have shown that it is possible to both feed a hungry world and protect a threatened planet. It will take serious work. But we can do it.

Researchers looked at a wide range of data, identified clear patterns, and developed concrete solutions for the problem of feeding the world while protecting the natural environment. Image Credit: Tim Green

Bottom line: An international team of researchers has created a global plan to double the world’s food production while reducing the environmental impacts of agriculture. Their findings were published October 12, 2011, in the journal Nature.

Via McGill University

Animated map of global agricultural land use changes

Water-food link suggests more holistic farming approach

Nina Fedoroff on science for global agricultural challenges

World Food Day on October 16 targets volatile food costs

EarthSky

MORE ARTICLES