This paper assesses the scale of the potential co-benefits for residents of developing countries of protecting forest ecosystems in order to mitigate climate change. The objective is to improve understanding among development practitioners of the ways in which services provided by forest ecosystems can also make important contributions to achieving development objectives such as improvements to health and safety, and maintenance of food and energy security. This is achieved by reviewing empirical studies that estimate the value of specific ecosystem services derived from forests in order to evaluate and describe the current state of knowledge on how the wellbeing of local people is likely to be affected by the introduction of global mechanisms for avoided deforestation in developing countries.