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Mission Impossible: Stop the Sahara Desert with the GGW

Photo credit: AP The Big Story

Map shows Great Green Wall pan-African planting project fights desertification.

Wall of trees being planted across Africa to halt desert

It seems like Mission Impossible: Stop the Sahara Desert from spreading farther south, its incursion into arable land fueled by climate change and overgrazing.

But tree by tree, a Great Green Wall is being planted across a belt of Africa to fight back, though the success of the Herculean effort depends in large part on about a dozen countries making a concerted effort and on funding.

Under plans launched in 2007, the Great Green Wall will be an arc of trees and plants running 7,000 kilometers (4,350 miles) across Africa — from Senegal along the Atlantic all the way to Djibouti on the Gulf of Aden.

The 15-kilometer (9-mile) wide wall is a part of a wider initiative meant to help reduce seasonal winds packed with sand and dust, slow land degradation and the encroaching desert, and to improve the health and lives of those living nearby.

So far in Senegal, the country furthest along in the project, 40,000 hectares (99,000 acres) has been planted along a line of 150 kilometers (93 miles), that will eventually extend to 545 kilometers (340 miles) covering about 800,000 hectares (1,976,800 acres), according to Senegal’s national agency for the project.

In Senegalese villages like Mbar Toubab, market gardening is now possible, allowing women like 38-year-old Aissata Ka to make more money as agriculture and economic opportunities blossom where acacia trees now grow.

“Agriculture is easier for us,” said Ka, who lives in Mbar Toubab in Senegal’s north. “With livestock, the herd can die at any moment, and you are then condemned to live as a nomad. Here, with agriculture, we don’t need to move.”

Ousseynou Toure, an expert with the Program of Local Development in Senegal that advises the government, named another benefit.

“It has also helped the health of children by reducing the dust and winds,” he said

Senegal’s successes have come from not only working with communities, but with researchers to be sure the trees that will thrive most are planted.

Land degradation advances quickly with changes in the climate, and must be stopped to preserve the ecosystem and restore the natural order of things, Toure noted.

He stressed that the project must continue to be linked with social services so that any gains can be maintained.

Each of the 11 countries that the wall is supposed to pass through decides what its needs are for the initiative and how it maintains each section, he said. So if one country’s policies shift and they don’t maintain their part of the swath of trees, it could impact neighboring countries, Toure said.

The project, launched by African leaders, is being strengthened through intergovernmental meetings and agreements over the years with support from the United Nations and other organizations.

Read the full article: AP the Big Story

Published by

Willem Van Cotthem

Honorary Professor of Botany, University of Ghent (Belgium). Scientific Consultant for Desertification and Sustainable Development.