UN calls for action to stop advancing deserts

Launching a 10-year campaign to halt the advance of deserts, the U.N. environment program (UNEP) said land degradation in dry places had affected 3.6 billion hectares (8.9 billion acres) — a quarter of the world's land area — and a billion people.

“Continued land degradation ... is a threat to food security, leading to starvation among the most acutely affected ... and robbing the world of productive land,” U.N. Secretary-General Ban Ki-moon said in a statement.

The statement said 12 million hectares of arable land was lost to desertification each year, causing losses of agricultural productivity of US$42 billion annually.

Africa is the continent considered by U.N. officials to be the worst affected by desertification. Its semi-arid Sahel region, stretching from Senegal in the west to northern Somalia, is fast turning into a wasteland.

Frequent droughts cause crops to fail. Niger and Chad are facing life-threatening hunger as much of the Sahel has been suffering a food crisis in recent months.

UNEP proposed community projects to plant trees and other plants that hold topsoil in place, preventing deforestation and tackling over-grazing by cattle-keepers, and teaching local communities how to manage their land better.

“Efforts have been made to address land degradation ... (but) more action is needed to arrest and reverse ... creeping desertification worldwide,” the statement said.

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