To facilitate estimation of the carbon sink associated with tropical forest
s in Cameroon, regenerating and mature forests were mapped using an unsuper
vised classification of AVHRR channels 1, 2 and 3. Stages of regeneration w
ere defined using nonlinear relationships between AVHRR channel 3 radiance
and basal area. estimated using data collected from 183 plots (1 ha in size
) in an area south-east of the capital, Yaounde. The overall extent and pat
terns of regenerating forest were comparable to those generated in previous
studies. Older stages of regeneration could not, however, be discriminated
adequately from mature forest, suggesting that areas of tropical forest di
sturbance may be underestimated when mapped using AVHRR data.