In this document, there are only two allometric
equations for tropical forests, while in fact there are many
differences in the characteristics of tropical forests. The accuracy
or uncertainty of models is an important aspect that is mentioned in
the GPG and the different instruments of the Kyoto Protocol. To
reduce uncertainty, accurate carbon accounting methods are
required. The development of new, species-specific allometric
equations are necessary to achieve higher levels of accuracy, and
we present some new equations here to achieve a better estimation
of carbon stock for tropical lowland Dipterocarp forests.