When planning efforts to Reduce Emissions from Deforestation and Forest Degradation, the benefits could be increased by taking account of the distribution not only of carbon, but of other ecosystem services such as biodiversity or non-timber forest products. Here, we map the distribution of carbon stocks in relation to the distribution of these possible co-benefits of REDD. Other relevant factors such as protected area distribution and fire occurrence are also compared with carbon stocks. A new map of carbon in Tanzania’s ecosystems has been produced for this analysis.