Fig. 8
From: Uncertainty in REDD+ carbon accounting: a survey of experts involved in REDD+ reporting
Uncertainties in reference levels of emissions reported by 40 countries that have submitted to the UNFCCC, 5 of them twice. 21 additional countries submitted reports without a combined uncertainty estimate. Colors indicate the number of types of uncertainty sources included, ranging from 1 to 5, namely, tree measurement, allometric models, variability in forest carbon (sampling error), land-use change, and other parameters (carbon fraction and root-to-shoot ratio). Not all countries calculated and propagated uncertainty sources correctly