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Reforestation Policy Evaluation
A regional ecosystem can exist in one of two stable states: a lush forest or barren land. The barren state is self-reinforcing; severe soil erosion prevents new growth, which in turn worsens the erosion. To restore the forest, the system must be pushed past a critical threshold. A government is considering two policies:
- Policy A: A massive, one-time investment to plant millions of mature saplings and add nutrient-rich topsoil across the entire region in a single year.
- Policy B: A smaller, sustained annual investment to plant a few thousand saplings each year and offer minor subsidies to prevent land clearing at the edges of the region.
Based on the concept of systems with tipping points and multiple stable equilibria, which policy is more likely to be successful in transitioning the region back to a forested state? Justify your choice.
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