About This Article
This article examines those missing links and argues that long-horizon regeneration depends less on tree counts than on the continuity needed to sustain ecological gains across decades.
The Allure and Complexity of Greening Initiatives
Dryland regeneration has captured imaginations for decades, embodied most visibly by the vast afforestation programs of China’s Three-North Shelterbelt and Africa’s Great Green Wall. These projects have mobilized tens of billions of dollars and inspired global attention with their scale and ambition. They have also produced genuine achievements: degraded land has been restored, millions of trees planted, and in some regions communities once facing collapse are now harvesting food, fuel, and resilience from revitalized soils.
Yet these successes tell only part of the story. Progress has been uneven and in many areas dependent on burst funding or exceptional local leadership rather than institutionalized systems. Large stretches of land remain degraded, political coordination often falters, and ecological gains require stable governance conditions to persist across decades. The Great Green Walls show us both the possibilities and the limitations of earth-scale regeneration.
The challenge now is to look beyond these initiatives – to recognize what has been achieved, but also to identify the missing links that prevent promising initiatives from becoming truly sustainable.
Drylands are continuous systems. States are discontinuous systems. Regeneration is constrained where ecological continuity intersects with political discontinuity.
Lessons Learned from Global Initiatives
Achievements
China’s Three-North Shelterbelt and Africa’s Great Green Wall in the Sahel show that degraded land can be restored when political will and funding align. In both regions, large-scale commitments have made real impacts.
In Africa, methods such as half-moon basins, zai pits, and farmer-managed regeneration have revived land and supported food production – labor-intensive and dependent on sustained coordination. In China, decades of persistence have increased forest cover, stabilized soils, and slowed desert expansion.
These techniques operate at plot scale. Continuity across decades depends on territorial organization, defined maintenance obligations, and structured land governance.
Hedgerow-based territorial systems in parts of the Sahel, including Burkina Faso, demonstrate how regeneration can be organized at scale through participatory land-group frameworks, embedding water retention, commons governance, and shared maintenance responsibility.
Insights
Both projects face structural weaknesses that limit their effectiveness.
In Africa, tree mortality has been high, progress fragmented, and reliance on external funding has left projects exposed to discontinuity. In China, centrally standardized approaches have sometimes overlooked local conditions, producing monocultures with limited biodiversity and questionable long-term resilience.
These experiences show that dryland regeneration is possible, yet structurally constrained by mandate discontinuity, capital cycling, and the absence of engineered persistence across political turnover. Large-scale projects can attract capital and visibility, but lasting ecological gains depend on whether continuity can be maintained across funding cycles and leadership transitions.
In parts of the Sahel, security volatility further conditions continuity, affecting field access, maintenance cycles, monitoring persistence, and capital deployment reliability.
The absence of long-term financial planning has been a critical weakness in the African GGW, where much of the funding has been structured around short project cycles – five or ten years at most – with little provision for sustained maintenance. Resilient ecological restoration requires multi-decade commitments supported by funding structures that extend beyond short program cycles.
Where regeneration is embedded in formalized land groups, shared perimeters, commons infrastructure, and defined custodianship, continuity becomes a design feature rather than a funding variable.
Different governance models approach this challenge in distinct ways.
Diverging Models
China’s Shelterbelt Program
- Strengths: Centrally controlled, consistently funded, remarkable in scale and persistence
- Weaknesses: Limited community involvement, ecological diversity concerns, social impacts on local farmers who lost traditional land uses
Africa’s Great Green Wall
- Strengths: Multilateral collaboration across many nations, community-led techniques with proven local results, strong alignment with livelihood needs
- Weaknesses: Dependent on external capital flows, with capital deployment governed by heterogeneous national protocols that do not embed multi-decade continuity obligations
Comparison
This divergence affects everything from the projects’ designs to the way results are presented. Both models illuminate what is possible, but each exposes structural flaws:
- Africa’s reliance on implementation methods tied to sustained external financing cycles
- China’s dependence on centralized power and brute-force investment, often at the expense of local livelihoods
Experience from both models shows that scale can be forced or coordinated, but durability requires a different architecture.
The Path Ahead
Long-horizon regeneration depends on institutional design capable of sustaining effort across decades. Continuity at scale rests on the convergence of:
- Local economic incentives aligned with maintenance obligations embedded in territorial structures, linking land stewardship directly to livelihood stability
- Territorial continuity architecture integrating hydrological control, land consolidation, commons management, and vocational training, transforming regeneration from a project into a structured landscape system
With these in place, and with clear guardrails against hidden agendas, greenwashing, and performative metrics, progress can be measured in durability, resilience, and long-term benefit rather than in short-term numbers or glossy reports. Durability must become the primary metric – not hectares announced, but hectares surviving political cycles.
Funding Dryland Regeneration
Capital for climate and impact initiatives is abundant – global estimates run into the trillions each year. Yet only a fraction finds its way into dryland regeneration. The reason is not a shortage of funds, but a shortage of projects structured to absorb them.
Regeneration projects stall between catalytic pilots and institutional capital because the validation layer is not systematically engineered. Institutional investors require verified survival curves, lifecycle persistence logic, and risk containment structures. Most projects present ambition and hectares, but not enough evidence that gains will hold over time.
Monitoring and verification systems commonly lack institutional continuity across funding transitions, limiting the retention of survival data and land performance records.
The result is a funding mismatch: capital exists, but validated deployment pathways do not meet institutional risk, diligence, and allocation standards.
Next Frontiers for Dryland Regeneration
The work can be continued on Africa’s Great Green Wall itself – particularly in regions such as Burkina Faso, Mali, and Niger, where progress has stalled and existing momentum risks being lost. Beyond Africa, new or planned initiatives could be joined in other regions under severe ecological pressure:
- Southern Africa: The Southern African Development Community (SADC) is advancing plans for a Great Green Wall–style initiative
- Central Asia – Aral Sea Basin: The World Bank’s RESILAND program is ongoing, and has already restored over 500,000 hectares around the Aral Sea
- Saudi Arabia – Al Baydha Project: Regenerating arid foothills near Mecca with ancient water-harvesting techniques, this project is a pioneer for the Arabian Peninsula
Conclusion
The Great Green Wall projects show both the possibilities and the limits of large-scale regeneration. They confirm that degraded drylands can recover, but they also show that technique alone is not enough. Continuity can only be achieved through long-term planning that encompasses firm funding commitments, aligned mandates, durable maintenance obligations, and stable monitoring. The next phase of earth-scale dryland regeneration will be judged less by planting ambition than by survival, persistence, and long-term continuity. Beyond producing short-term, visible results, the central challenge is to build initiatives that can hold together across decades, funding transitions, and political change.
Featured image credit: Terre Verte, Burkina Faso – www.eauterreverdure.org
