Read the passage below carefully:
Across the arid farmlands of Maradi in southern Niger, smallholder farmers have transformed degraded landscapes not through costly imported saplings, but by protecting spontaneous shoots sprouting from subterranean tree stumps. This low-cost practice, known as Farmer-Managed Natural Regeneration (FMNR), relies on systematically pruning indigenous trees like Faidherbia albida to integrate them into crop fields. Unlike conventional reforestation programs that suffer high seedling mortality, FMNR harnesses resilient indigenous root systems already adapted to local droughts. As these native trees mature, they fix atmospheric nitrogen, leaf litter enriches topsoil organic matter, and canopy shade shields crops from extreme temperatures, significantly boosting pearl millet yields. Crucially, the regenerated trees also supply firewood, fodder, and medicinal bark, offering farming households vital secondary income streams during lean seasons. Neighboring communities, observing these economic and ecological gains, have rapidly adopted FMNR across millions of hectares without external subsidy. Ultimately, farmer-led regeneration of native rootstock proves that restoring degraded drylands requires capitalizing on local ecological resilience rather than relying on external interventions.
Based on the passage, match each statement from the text (Left) with its correct summary function in the author's overall argument (Right).
- Restoring degraded drylands effectively requires capitalizing on local ecological resilience rather than relying on external interventions.Core Central Thesis
- Pruning and protecting indigenous trees improves topsoil organic matter, nitrogen levels, and crop yields.Primary Supporting Mechanism
- Regenerated native trees supply firewood, livestock fodder, and medicinal bark for secondary income.Subsidiary Illustrative Detail
- Conventional reforestation programs suffer high seedling mortality during severe local droughts.Contextual Contrast