China’s “Great Green Wall” Tames Desert Growth, But the Fight Continues
SUBJECT: Environment | Ecology | Climate Change | Conservation
Context
China’s Three-North Shelterbelt Program (TNSP), popularly known as the Great Green Wall or Three-North Protective Forest Program (TNSFP), has significantly reduced the spread of desertification across northern China since its launch in 1978.
The programme is one of the world’s largest ecological restoration initiatives, aimed at restoring degraded land, reducing dust storms, and improving ecological resilience.
Objective
The programme seeks to:
- Combat desertification.
- Reduce the expansion of deserts.
- Prevent soil erosion.
- Restore degraded ecosystems.
- Increase forest cover.
- Improve biodiversity.
- Enhance climate resilience.
- Promote sustainable land management.
Why was the Programme Started?
Northern China has experienced severe land degradation due to:
- Prolonged droughts
- Climate change
- Overgrazing
- Deforestation
- Unsustainable agricultural practices
- Wind erosion
These factors accelerated desertification, threatening agriculture, livelihoods, biodiversity, and water resources.
What is Desertification?
Desertification is the degradation of productive land in arid, semi-arid, and dry sub-humid regions into desert-like conditions due to:
- Climatic variations
- Human activities
It results in:
- Loss of soil fertility
- Reduced agricultural productivity
- Biodiversity loss
- Increased dust storms
- Water scarcity
Straw Checkerboard Technique
One of the programme’s most successful innovations is the Straw Checkerboard Technique.
How it Works
- Straw is arranged in square grids across shifting sand dunes.
- The grids reduce wind speed.
- Sand movement is stabilised.
- Moisture is retained.
- Saplings are planted inside the grids.
- Irrigation systems improve seedling survival.
This method enables vegetation to establish even in highly mobile desert environments.
Major Achievements
Reduction in Desertification
- Desertified area peaked around 2000.
- Since then, desertification has declined by over 1,000 sq. km every year.
- China’s total desertified land has reduced by nearly 10% since 2000.
Improvement in Land Quality
- Areas classified as severely or extremely desertified have declined by over 40%.
Forest Expansion
- Forests established under the programme now cover nearly 500,000 sq. km.
- Forest cover in the programme region increased from about 5% (1978) to 14% (2022).
Community Participation
- More than 300 million rural workers have participated over the decades.
Factors Behind the Success
The programme’s achievements are attributed to:
- Strong political commitment
- Long-term government investment
- Scientific planning
- Community participation
- Sustainable land management practices
- Improved irrigation techniques
- Favourable climatic conditions in recent years
UNCCD’s Assessment
The United Nations Convention to Combat Desertification (UNCCD) recognises China’s initiative as an important example of how long-term commitment and integrated land restoration strategies can reverse desertification.
The programme demonstrates that ecological restoration is achievable through sustained policy support and community involvement.
Challenges Ahead
Despite remarkable progress, experts caution that:
-
Ecological gains must be continuously monitored.
- Newly planted forests require long-term maintenance.
- Climate change may increase future desertification risks.
- Biodiversity needs to be strengthened through native species plantations.
- Water availability remains a critical concern in arid regions.
Global Significance
China’s Great Green Wall has emerged as a global model for:
- Ecosystem restoration
- Climate change adaptation
- Land degradation neutrality
- Biodiversity conservation
- Carbon sequestration
- Sustainable land management
- Desertification control
Its lessons are increasingly relevant for other dryland regions, including Africa’s Great Green Wall Initiative and India’s efforts to combat land degradation.
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