Primary tropical forests provide a range of highly valuable ecosystem services that are of global significance for climate change mitigation and adaptation and biodiversity conservation. Evolutionary processes over millennia have resulted in a level of complexity and stability that makes these forests irreplaceable and investing in their protection is critical to addressing humanity’s gravest challenges. Primary tropical forests maintain a very high level of ecosystem integrity and, as a result, generate superior ecosystem services, particularly, for example, the significant quantity of carbon stored in their biomass and soil.
This working paper describes the importance and economic value of these ecosystem services, making the argument that primary tropical forests are irreplaceable.