Preventing Desertification With a Wall of Trees

Officials in Africa have approved a plan to plant a "wall of trees" across the continent to prevent the southward spread of the Sahara desert due to winds and drought.

1 minute read

July 10, 2008, 5:00 AM PDT

By Nate Berg


"The 'Great Green Wall' will involve several stretches of trees from Mauritania in the west to Djibouti in the east, to protect the semi-arid savannah region of the Sahel - and its agricultural land - from desertification."

"A plan for the proposed US$3 million, two-year initial phase of the project - involving a belt of trees 7,000 kilometres long and 15 kilometres wide - was formally adopted at the Community of Sahel-Saharan States (Cen-Sad) summit on rural development and food security in Cotonou, Benin, last month (17-18 June)."

"North African nations have been promoting the idea of a Green Belt since 2005 (see African nations agree to boost desert research). The project has been scaled down to reinforce and then expand on existing efforts, and will not be a continent-wide wall of trees, despite the name of the project."

"The Green Wall will involve two planting projects on the east and west sides of Africa."

Tuesday, July 8, 2008 in Environmental News Network

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Use Code 25for25 at checkout for 25% off an annual plan!

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

May 7, 2025 - Diana Ionescu

Person in yellow safety suit and white helmet kneels to examine water samples outdoors on a lake shore.

USGS Water Science Centers Targeted for Closure

If their work is suspended, states could lose a valuable resource for monitoring, understanding, and managing water resources.

May 1, 2025 - Inside Climate News

Aerial view of Freeway Park cap park over I-5 interstate freeway in Seattle, Washington at night.

Congress Moves to End Reconnecting Communities and Related Grants

The House Transportation and Infrastructure Committee moved to rescind funding for the Neighborhood Equity and Access program, which funds highway removals, freeway caps, transit projects, pedestrian infrastructure, and more.

April 30, 2025 - Streetsblog USA

Person stepping over hole in sidewalk.

Portland Council Tentatively Approves Sidewalk Repair Plan

The proposal would address sidewalk needs in Portland’s District 1 and District 4.

May 12 - Oregon Public Broadcasting

6-story building at Honolulu Community College.

Expanding Access to Design Education at Honolulu Community College

Honolulu Community College’s Architecture, Engineering & Construction Technologies program highlights the role of community colleges in preparing nontraditional students for careers in architectural and construction technologies.

May 12 - University of Hawai'i News

"Radiation Zone, Keep Out" sign on wood post with red Arizona desert mesa in background

Integrating Human Rights Into Energy and Extractive Sector Transitions

Why just transition efforts must move beyond economic considerations by embedding human rights principles into business practices to ensure equitable, transparent, and accountable outcomes for affected communities and workers.

May 12 - Cambridge University Press

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.