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Why forests?

Last updated on May 22, 2026

Forests are one of the most effective natural tools against climate change, and do far more than store carbon:

  • Carbon: a mature tree absorbs roughly 10 kg (22 lb) of CO2 a year; at ~1,000 trees per hectare that's ~10 tonnes per hectare annually (One Tree Planted). Forests and land ecosystems absorb about a third of fossil-fuel CO2 each year (IUCN).

  • Biodiversity: home to about 80% of the world's land-based species.

  • Livelihoods: over 1.6 billion people depend on forests (United Nations).

  • Water and soil: they stabilise rivers, filter sediment and reduce erosion.

  • Wildfire resilience: sustainable forestry lowers wildfire severity.