Tropical forests are indisputably the areas with highest biological diversity on Earth, both in absolute and density  terms . Estimates account that tropical forests harbour half or even more of world's biodiversity , even though this figure is highly uncertain owing to varying estimates of undescribed species . For example, it is estimated that there are at least 40,000, but possibly more than 53,000 tree species in tropical forests . A vast majority of this biodiversity and Indigenous knowledge and local knowledge associated with its use remains poorly explored, presenting a vast unlocked genetic reserve at risk of loss, although many of today's important medicines, foods and ecosystem products originate from tropical forests .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report