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Sahara vs Great Green Wall: An 8,000-km green belt is being built across Africa’s Sahel region; aims to stop desert expansion
Sahara vs Great Green Wall: An 8,000-km green belt is being built across Africa’s Sahel region; aims to stop desert expansion
By Trending Desk
, ET OnlineLast Updated: Jul 05, 2026, 01:15:00 PM IST
Synopsis
Africa’s Great Green Wall is an 8,000-kilometre restoration initiative stretching from Senegal to Djibouti, aimed at reversing decades of desertification across the Sahel. Launched by the African Union in 2007, the project targets restoration of 100 million hectares of land, creation of 10 million jobs and improved food security for millions by 2030
Somewhere between the Atlantic coast of Senegal and the shores of Djibouti on the Red Sea, Africa is attempting something that has never been done before at this scale. A belt of restored land, trees, grasslands, wetlands and farmland stretching roughly 8,000 kilometres across the continent’s driest inhabited region. It is called the Great Green Wall. The name makes it sound like a line of trees. The reality is considerably more complex, and considerably more interesting.What is the Great Green Wall? The African Union launched the initiative in 2007 as a response to the accelerating environmental crisis across the Sahel, the vast semi-arid strip that runs across Africa just below the Sahara Desert. The original plan was a continuous belt of trees, roughly 8,000 kilometres long and about 15 kilometres wide, planted from one end of the continent to the other. Over time, scientists pushed back on that idea. A single line of trees, they argued, would not survive long enough to matter. What the region actually needed was broader landscape restoration tailored to local conditions. So the project evolved. Today it is a collection of restoration efforts spread across more than 20 countries, combining tree planting with grassland recovery, wetland restoration, improved farming practices, rainwater harvesting and soil rehabilitation.Why the Sahel needs it The Sahel has been under pressure for decades. Prolonged droughts, expanding desert, shrinking fertile land and increasingly unpredictable rainfall have made life difficult for the millions of people who depend on farming and livestock across the region. As crop yields have declined and land has degraded, communities have faced food insecurity, poverty and the growing pressure to migrate in search of better conditions elsewhere. The Great Green Wall is designed to reverse that trajectory. Restored land holds water better, supports more productive farming, reduces soil erosion and provides habitat for wildlife. For communities on the ground, it can mean the difference between a harvest and a failed season.What the numbers look like The targets set for 2030 are ambitious by any measure. The initiative aims to restore 100 million hectares of degraded land, an area roughly the size of Egypt. It also aims to capture 250 million tonnes of carbon dioxide from the atmosphere and create 10 million green jobs across participating countries. More than 20 African nations are involved, alongside international organisations, development banks and environmental groups providing funding and technical support.How far along is it? Progress has been made, though the project still has considerable ground to cover. Senegal has planted millions of trees and restored significant stretches of degraded land. Ethiopia has rehabilitated millions of hectares through large-scale programmes. Nigeria, Niger and several other countries have expanded sustainable land management across large areas. Recent assessments put the total land restored so far at around 30 million hectares. That is a meaningful start, but experts are clear that reaching the 2030 targets will require more funding, stronger cooperation between countries and improved conditions in areas affected by conflict.Why it matters beyond Africa The Great Green Wall is now regarded as one of the largest ecosystem restoration projects ever attempted anywhere in the world. Its significance, though, is not limited to the Sahel. Land degradation and climate change are problems that do not respect borders. If the initiative delivers on its goals, it could offer a working model for restoring degraded dryland landscapes in other parts of the world facing similar pressures. What also makes it different from most large environmental pledges is who is doing the work. Governments, communities and farmers across the Sahel, the people with the most at stake, are the ones on the ground carrying the project forward. That, more than any funding announcement or international agreement, is usually what determines whether something this large and this slow actually gets finished. Eight thousand kilometres of restored land will not happen in a single growing season. But it is happening.(With TOI inputs)Add
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