An Evaluation of The carbon stocks of The Tra Su Cajuputi Forests in An Giang Province of Southern Vietnam

Abstract

Forest aboveground biomass (AGB) plays an important role in the study of the carbon cycle and climate change in the global terrestrial ecosystem. Therefore, studying the CO₂ absorption capacity of forests through the accumulation of carbon in biomass is essential. Quantification of M. cajuputi forest biomass in the TraSu Cajuput forest was conducted to estimate the carbon storage capacity of M.cajuputi forest. Data were collected in 13 plots measurement cells in forests. The results showed that the average density, height and diameter respectively were 3,778 tree/ha, 11.54m±1.45m, 13.08cm±1.6cm. At the same time, analysis of 15 standard Melaleuca trees to establish 2 equations relating biomass and stem diameter (DBH 1,3) of M. cajuputi trees above ground and DBH 1,3 and height using the form of y = ax^b and all two equations have correlative coefficients R²>0.90. The average green biomass of the M. cajuputi populations in Tra Su forests was 404.38tons/ha and the dry biomass was 238.99tons/ha. Dry biomass ratio per green biomass is K = 0.56. The average carbon content of M. cajuputi forests is 116.15tons/ha. The total amount of CO₂ storage of M.cajuputi forests is 425.88tons/ha. The amount of carbon accumulated in M.cajuputi population of the Tra Su Park was 98,146 tons, equivalent to 359,868.6tons of CO₂.