Table 4. Comparison of primary data from this study with secondary above-ground forest carbon stock data, by forest type, showing the discrepancy between forest carbon stock methods (tC/ha). Secondary data sourced from IPCC (2006); note that the ecological zone data have only a point estimate.

Primary data Ecological zone specific Africa specific
Forest classification tC/ha tC/ha As a % of primary data tC/ha As a % of primary data
Tropical moist 231 85 -63% 122 -47%
(179–283) (-) (75–202)
Tropical dry 132 61 -54% 56 -58%
(59–205) (-) (56–61)