Great Green Wall
The Great Green Wall or Great Green Wall of the Sahara and the Sahel Initiative (French: Grande Muraille Verte pour le Sahara et le Sahel) is a planned project to plant a wall of trees across Africa at the southern edge of the Sahara desert as a means to prevent desertification. It was developed by the African Union to address the detrimental social, economic and environmental impacts of land degradation and desertification in the Sahel and the Sahara.
From the initial idea of a line of trees from east to west through the African desert, the vision of a Great Green Wall has evolved into that of a mosaic of interventions addressing the challenges facing the people in the Sahel and the Sahara. As a programming tool for rural development, the overall goal of this sub-regional partnership is to strengthen the resilience of the region's people and natural systems with sound ecosystem management, the protection of rural heritage, and the improvement of the living conditions of the local population. Contributing to improved local incomes, the Great Green Wall of the Sahara and the Sahel Initiative (GGWSSI) will be a global answer to the combined effect of natural resources degradation and drought in rural areas. The Initiative is a partnership that supports the effort of local communities in the sustainable management and use of forests, rangelands and other natural resources in drylands. It also seeks to contribute to climate change mitigation and adaptation, as well as improve food security in the Sahel and the Sahara.
During an expedition to the Sahara in 1952 Richard St. Barbe Baker proposed a ‘Green front’ to act as a front-line of trees 30 miles deep to contain the desert. The idea then re-emerged in 2002, at the special summit in N'Djamena (Chad) on the occasion of the World Day to Combat Desertification and Drought. It was approved by the Conference of Leaders and Heads of States members of the Community of Sahel-Saharan States during their seventh ordinary session held in Ouagadougou (Burkina Faso) in June 1 and 2, 2005.
Since 2005, the Great Green Wall concept has developed considerably. Lessons learned from the Algerian Green Dam or the Green Wall of China led to understand the need of an integrated multi-sectorial approach for sustainable results. From a tree planting initiative, the Great Green Wall for the Sahara and the Sahel has evolved to a development programming tool. In 2007, during the eight ordinary session of the Conference of Heads of State and Governments held on January 29 and 30, 2007 in Addis-Ababa (Ethiopia), African Heads of State and Government endorsed the Great Green Wall for the Sahara and the Sahel Initiative with the objective of tackling the detrimental social, economic and environmental impacts of land degradation and desertification in the region.
Together, eleven Sahelo-Saharan states (Burkina Faso, Djibouti, Eritrea, Ethiopia, Mali, Mauritania, Niger, Nigeria, Senegal, Sudan and Chad) created the Panafrican Agency of the Great Green Wall (PAGGW).
The first step towards the Great Green Wall was set with the development of a Harmonized regional strategy for implementation of the Great Green Wall Initiative of the Sahara and the Sahel that was adopted in September 2012 by the African Ministerial Conference on Environment (AMCEN). According to AMCEN, the Great Green Wall is a flagship program that contribute to the goal of the United Nations Conference on Sustainable Development, or RIO+20, of "a land degradation neutral world".
The Great Green Wall for the Sahara and Sahel Initiative is an African Union program bringing together more than 20 countries from the Sahelo-Saharan region including Algeria, Burkina Faso, Benin, Chad, Cape Verde, Djibouti, Egypt, Ethiopia, Libya, Mali, Mauritania, Niger, Nigeria, Senegal, Somalia, Sudan, the Gambia and Tunisia.
The Initiative is backed by many regional and international organizations, including:
- African Forest Forum (AFF)
- African Union Commission (AUC)
- Association for the promotion of education and training abroad (APEFE)
- Arab Maghreb Union (UMA)
- Community of Sahel-Saharan States (CEN-SAD)
- Economic Community of West African States (ECOWAS)
- European Union (EU)
- Food and Agriculture Organization of the United Nations (FAO)
- Global Mechanism of the United Nations Convention to Combat Desertification (GM-UNCCD)
- Intergovernmental Authority on Development in Eastern Africa (IGAD)
- MDG Center for West and Central Africa (MDG-WCA)
- Pan African Farmers Organization (PAFO)
- Panafrican Agency of the Great Green Wall (PAGGW)
- Permanent Interstate Committee for Drought Control in the Sahel (CILSS)
- Sahara and Sahel Observatory (OSS)
- Secretariat of the United Nations Convention to Combat Desertification (UNCCD-Secretariat)
- United Nations Development Programme–Drylands, Development Center (UNDP-DDC)
- United Nations Environment Programme (UNEP)
- United Nations Environment Programme–World Conservation Monitoring Center (UNEP-WCMC)
- Walloon Region of Belgium, Wallonie-Bruxelles International
- World Agroforestry Centre (ICRAF)
- World Overview of Conservation Approaches and Technologies (WOCAT)
- World Bank
The Great Green Wall of the Sahara and the Sahel concept has been defined in the continuity of discussions by the African Union Commission (AUC) and the CEN-SAD Secretariat. The Initiative is considered as a set of integrated actions related to issues “affecting people livelihoods in Sahel and Sahara”. The GGWSSI is not only a reforestation initiative, it is a programming tool for rural development.
The geographical scope of the Great Green Wall is defined as the Saharan strip, north and south borders, including Saharan oases and enclaves, such as Cape Verde.
The GGWSSI strengthens existing mechanisms (such as Comprehensive African Agricultural Development Program, Environmental Program (CAADP) of NEPAD, regional, sub-regional, and national action programs to combat desertification) to improve their efficiency in the Sahel-Saharan regions through synergy and coordination activities.
In order to ensure the success of this Initiative, the Regional Harmonised Strategy points out the importance of partnerships between stakeholders (at national, sub-regional and regional scales), integration of the Initiative in existing national regional and local programs, sharing and capitalization of lessons learned (especially through South-South cooperation and technology transfer), local participation and ownership of actions, developing a more integrated and global planning.
- Great Green Wall for the Sahara and the Sahel initiative: The African Wall, AU-FAO-GM UNCCD-EU 2012 
- The Great Green Wall of the Sahara and the Sahel, introductory note No. 3, Tunis 2008 
- BBC News – Push for 'Great Green Wall of Africa' to halt Sahara, 17 June 2010
- Convention creating the Pan-African Agency for the Great Green Wall PDF (478 KB)
- Harmonized regional strategy for implementation of the Great Green Wall Initiative of the Sahara and the Sahel 
- African Ministerial Conference on the Environment, Fourteenth session, Report of the ministerial segment held from 12 to 14 September 2012 in Arusha, United Republic of Tanzania 
- Major Principles for a Harmonised Strategy in the Context of the GGWSSI Implementation, Global Mechanism of the UNCCD 2012 
- FAO page on the Great Green Wall
- The African Great Green Wall project-What advice can scientists provide? French Scientific Committee on Desertification (CSFD)