Luc Gnacadja

12 Million Hectares Lost Every Year to Desertification

Dealing with desertification has a long history of failure.

By Stephen Leahy

CHANGWON, South Korea, Oct 13, 2011 (IPS)

Degradation of land is the world’s quiet crisis, undercutting food production, increasing water scarcity, impoverishing hundreds of millions of people and affecting two billion overall. Nearly 20 million square kilometres of the earth’s arable lands – an area twice the size of Canada – have already been degraded.

Each year, 12 million hectares of land, where 20 million tons of grain could have been grown, are lost to desertification. Unless this trend is reversed soon, feeding the world’s growing population will be impossible, experts say. However, the global community has failed for over two decades to address this serious challenge.

Now, delegates from 193 countries are meeting in South Korea under the United Nations Convention to Combat Desertification (UNCCD) to review progress on a ten-year plan to reverse the ongoing decline in the quality and quantity of land in food-producing regions.

During the 10th Conference of the Parties (COP 10) under the UNCCD, delegates will also consider creating a scientific body like the Intergovernmental Panel on Climate Change to serve as the global authority on desertification and land degradation.

“The UNCCD will take bold steps towards delivering critical services to the two billion people that face negative impacts of desertification, land degradation and drought,” Luc Gnacadja, executive secretary of the UNCCD, told delegates during the opening session of COP 10 that began Oct. 10 and concludes Oct. 21.

Land degradation is mainly the consequence of poor land management in conjunction with changes in rainfall. Erosion and degradation most often result from ploughing fields, removing crop residues after harvest and overgrazing. It is akin to tire wear on cars – a gradual, less noticeable process with potentially catastrophic consequences if ignored for too long.

“People do not notice land degradation until there is a crisis,” said Pier Paolo Roggero, a scientist at University of Sassari in Italy. Continue reading →

By Stephen Leahy

CHANGWON, South Korea, Oct 17, 2011 (IPS)

Nearly all our food comes from the Earth’s limited food- producing lands, but those lands continue to be degraded, guaranteeing far higher food prices and less food in the future, experts warn.

But degradation and desertification can be halted and reversed, as evidenced by once barren parts of Africa’s dry Sahel Region that are now green and thriving thanks to local efforts.

“Without reversing ongoing land degradation, studies show food prices will be 30 percent [higher] and 12 percent less food available” by 2035, said Luc Gnacadja, executive secretary of the United Nations Convention to Combat Desertification (UNCCD), which is meeting here in Changwon, South Korea.
“We can’t afford to deplete our food-producing lands when there will be nine billion people by 2050,” Gnacadja said.

Food security is a major theme at this 10th Conference of the Parties (COP 10) under the UNCCD, the international governmental convention charged with finding ways to end desertification and land degradation.

Although the world can produce enough food for everyone, roughly one in seven people will go hungry. Why? They simply cannot afford to buy enough food. World food prices remain 15 percent higher than a year ago, according to the U.N. Food and Agriculture Organisation (FAO). Food commodity speculation and climatic change that is bringing increased heat and changes in precipitation patterns, along with increasing demand for biofuels, have been blamed for rising food prices in recent years.

Largely unseen in the growing concern about feeding the world is the decline in the fertility of soils due to erosion and overuse. Every year, this results in the effective loss of some 12 million hectares of land. Continue reading →