Humanity has the knowledge and experience to restore landscapes on a massive scale, creating regions where the needs of humans and the needs of ecosystems are met simultaneously and sustainably. Learning about these projects is a powerful way to arm ourselves against feelings of powerlessness, despair, and paralysis. When we know what change is possible, we know what to fight for.
This is a growing post that will be updated with new projects over time.
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Africa’s Great Green Wall
The concept, announced by the African Union in 2007, was to combat desertification across the continent of Africa by planting a multi-country belt of trees 10 miles wide and more than 8,000 km long. At first, the scheme appeared both impractical (who would nurse the seedlings planted on swathes of uninhabitable land?) and ineffective (tree-planting in the Sahel had a history of failure). However, after a slow start, the idea of the Great Green Wall has blossomed into a patchwork of effective locally-led initiatives that are grounded in what actually works to combat desertification in each particular place.
The eureka moment for land management specialists came when they realized that farmers, driven by necessity, were finding ways to adapt traditional practices to be resilient to drought and make their land more productive instead of less. Rather than create new wilderness, as with the original plan for the wall, it was more effective to adopt land management strategies from the farmers. In 2021, an additional $14 billion US was pledged to see the Great Green Wall become a reality.
Regional initiatives include:
- In Niger, nurturing trees that sprout naturally and growing crops around them. By 2011, 12 million acres in Niger were restored. The method is now called “farmer-managed natural regeneration.”
- In Burkina Faso, revolutionizing a traditional pit-planting technology called zai to add organic matter, capture more rain, and integrate the tunneling services of termites to improve soil.
Learn More About Africa’s Great Green Wall
Articles
- “The ‘Great Green Wall’ Didn’t Stop Desertification, but it Evolved into Something that Might.” by Jim Morrison, Smithsonian Magazine
- “In Burkina Faso, the Great Green Wall is Taking Shape.” Action Against Desertification
- “Good News for Africa’s Great Green Wall.” by Jim Christophersen, UN Environment Programme. January 13, 2021.
Web Pages
- “The Great Green Wall Initiative” United Nations Convention to Combat Desertification
- “Farmer Managed Natural Regeneration (FMNR): a technique to effectively combat poverty and hunger through land and vegetation restoration.” Sustainable Development Goals Partnerships Platform
Films
- Dodd, Mark, Director. The Man Who Stopped the Desert. 1080 Film and Television, 2010. 1 hr., 4 min.
Reports
- Reij, Chris and Winterbottom, Robert. Scaling Up Regreening: Six Steps to Success: A Practical Approach to Forest and Landscape Restoration. World Resources Institute, 2015.
Holistic Planned Grazing
Developed to heal brittle grassland environments, holistic planned grazing is a method of raising livestock that improves the health of the landscape instead of depleting it.
The central tenet of holistic grazing is that soil depletion and desertification are caused not by the number of animals that graze a landscape, but by the amount of time the animals spend in one place. Ecologist Allan Savory pioneered the system after studying desertification in his home region of southern Africa and observing the differences in the behaviours of wild and domestic herd animals. By causing their animals to mimick the behaviour of wild herds, farmers can heal the soil instead of degrading it.
Savory encourages farmers to revise the way they think about agriculture to one simple aim: “creating a landscape and harvesting sunlight.” Harvesting sunlight means growing grass, which converts the sun to calories, which are consumed by livestock. The production of sunlight-consuming plants is paramount, so decision-making focuses on the long-term health of the landscape. Every other goal of generating products for market becomes a side-effect of that central aim.
Learn More about Holistic Planned Grazing
Videos
- Allan Savory’s TED Talk: How to Green the World’s Deserts and Reverse Climate Change
Websites
Web Pages
- “What is Holistic Planned Grazing?” The Savory Institute
- “Is Holistic Planned Grazing Relevant to You?” Earth Undaunted
Scholarly Articles
- “Does Holistic Planned Grazing Work on Native Rangeland?” by Hawkins et al. African Journal of Range & Forage Science
- “Holistic Management and Adaptive Grazing: A Trainer’s Perspective” by Mann et al. Sustainability vol. 10 number 6
The Loess Plateau Restoration
The Loess Plateau has been inhabited for a million and a half years, and has supported agriculture for more than 10,000, making it one of the oldest sites of settled agriculture in the world. It was once the political centre of China, and the people it supported became the world’s largest ethnic group.
Loess itself is a sedimentary soil that is blown down from the grinding glaciers of the Himalayas. It sometimes forms layers that are hundreds of metres thick. Loess can be wonderfully fertile, but just like with other soil types, productivity depends on having enough organic matter mixed in. Over millennia of farming, the plateau became less and less productive. Deforestation of the level areas was problematic enough; when people began clearing the hillsides as well, erosion increased dramatically. Unable to grow enough produce, people turned to herding sheep and goats, which stripped the landscape even further. By 1,000 years ago, the cradle of Chinese civilization was dominated by poverty and cyclical famines.
I995, the Loess Plateau was the most eroded place on earth with just ten-percent vegetable cover. Dust storms from the region now reached as far as Beijing, and they contributed to climate change by trapping the sun’s heat close to the earth. Ninety-five percent of the plateau’s fertility had run off into the Yellow River, which had become famous for being choked with silt.
That is the point at which China assembled a team of experts from within the country and around the world. They spent three and a half years consulting with local communities to find out which existing practices were already effective and which ones were destructive. Overcoming initial suspicion, they collaborated on a plan that would make the plateau’s residents the co-architects, executors, and beneficiaries of a plan that would halt erosion, restore the important Yellow River watershed, sequester carbon, rebuild natural fertility, improve air quality, and establish a resilient balance of forests and farmland. Today the Loess Plateau is green again and millions of people have lifted themselves out of poverty.
Learn More About the Loess Plateau Restoration
Videos
- Hope in a Changing Climate
- Lessons of the Loess Plateau
- Ecosystem Based Adaptation—by Dr. John D. Liu
Case Studies
- “Reforestation in China” United Nations case study
Scholarly Articles
- “Tracking reforestation in the Loess Plateau, China, after the “Grain for Green” project through integrating PALSAR and Lansat imagery by Zhou et al. Remote Sensing vol. 11, issue 22
- “Effects of land use change on surface runoff and sediment yield at different watershed scales on the Loess Plateau” by Zhang et al. International Journal of Sediment Research vol. 25, issue 3
- “Effects of reforestation on plan species diversity on the Loess Plateau” by Wang et al. Science of the Total Environment vol. 651, part 1
- “Dynamics of carbon and nitrogen storage in two typical plantation ecosystems of different stand ages on the Loess Plateau of China” by Wang et al. PeerJ 7:e7708