Empirical Models for Estimating the Stand Biomass of Teak Plantations in Java, Indonesia( Multipurpose Forest Management)

Abstract

The development of empirical bioniass models has gained a great deal of attention during recent decades. These models have been constnicted to facilitate the quantification of forcst biemass and carbon sequestration benefits, but few empirical models exist for estimating the stand biemass of teak (Tectona giz7tdts L.D plantatiens. This study thereforc sought to develop stand-level biomass models that use minimum input data for teak plantations in Central Java, Indonesia. Stand biomass and other stand variables were derived [rom ferest inventory duta in Balo {Kebonhario, Central Java). We used ]inear and nonlinear regt'ession to develop four types of biomass models/ volume to biomass, basal area to biomass, age to biomass, and age and basal area to biomass, These models were then validated ush]g an independent data set. Results indicated that teak stand biomass was accurately estimuted using the volume-to-biomass model. In addition, while the accuracy of the age and basal area-to-bjomass model was comparable to that of the volume-to-biomass model, the basal area-to-biomass aiid age-to-biomass models were 1ess accurate.