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This video from WorldVision Australia is an excellent introduction to the concept and practice of Farmer Managed Natural Regeneration.

In a balanced ecosystem, people and animals thrive. But when trees are cut down and land is burned, that balance is lost. Deforestation effects include soil erosion and a reduction in biodiversity. Through farmer managed natural regeneration (FMNR), World Vision programs empower farmers to reverse land degradation. The simple act of pruning tree regrowth and managing land sustainably can turn small shrubs and stumps into mature trees, promoting soil restoration and increasing crop yields, firewood, and livestock fodder.