Jumat, 01 Februari 2013

ALLOMETRIC EQUATIONS FOR ESTIMATING THE TOTAL BIOMASS AND CARBON STOCK IN PARRING BAMBOO (Gigantochloa atter) FROM COMMUNITY FOREST



ALLOMETRIC EQUATIONS FOR ESTIMATING THE TOTAL BIOMASS AND CARBON STOCK IN PARRING BAMBOO (Gigantochloa atter) FROM COMMUNITY FOREST

Baharuddin1 and Muhammad Daud2
1)       Faculty of Forestry, Hasanuddin University
2) Forestry Department, Faculty of Agriculture, Makassar Muhammadiyah University
email:mdaudhammasa@gmail.com


ABSTRACT


Allometric equations can be used to estimate the biomass and carbon stock of forests. However, so far the equations for bamboo forests have not been developed in sufficient detail. In this study, allometric equations are presented based on the commercial species was parring bamboo  from community forest.  The data were collected in bamboo community forest, Tanralili Subdistric, Maros Regency, South Sulawesi, Indonesia.  The number of bamboos sampled in this research were 60 samples where 30 samples used to make allometric model and 30 samples for model validation. Destructive sampling was used to collect the samples where diameter at breast height (D) was used as predictors for dry weight of total biomass (W) and carbon stock (CS). Model comparison and selection were based on average deviation, slope coefficient of the regression, and paired t-test and coefficients of determination (R2).  Fixed carbon of parring bamboo was determined based on ASTM D-3175. Validation model used to test the realibility of allometric equation model to prediction of the amount biomass in parring bamboo.  The results showed that the fix carbon in parring bamboo was 49,08%.  Allometric equation model can be used to predict biomass and carbon stock and in stem, twigs, leaves and total part of bamboo except in root. Based on statistical indicators, the most suitable allometric equiation model forest estimating the amount of biomass in parring bamboo was W= 0,348D1.830 and CS = 0.171 D1.830. This equation  was reliable for estimating the biomass and carbon stock parring bamboo from comunity forests.