established an allometric equation in mixed secondary forest in
Sumatra, but this forest was not classified as Dipterocarp forest.
Yamakura et al. (1986) constructed allometric equations using data
collected from Dipterocarp forests from Sebulu, East Kalimantan.
They used DBH and tree height to predict stem dry weight. The stem
dry weight was used to predict branch dry weight, and stem and branch dry weight was then used to model leaf dry weight. The
equations developed by Yamakura et al. (1986) are not practical for
most uses since the equation does not directly predict the TAGB