Assessing the Carbon Budgets of Large Leaf Mahogany (Swietenia macrophylla King) and Dipterocarp Plantations in the Mt. Makiling Forest Reserve, Philippines

Elenita L Racelis, Wilfredo M Carandang, Rodel D Lasco, Diomedes A Racelis, Arturo SA Castillo, Juan M Pulhin
Vol 11 No 1 (2008), pp. 40-55




This study determined the potential of tree plantations to sequester atmospheric carbon by measuring the amount of carbon stored in its biomass. The study involved a Dipterocarp and large leaf Mahogany stands located in Mt. Makiling Forest Reserve (MFR), Philippines. The carbon pools investigated included: above-ground biomass (trees, understorey/herbaceous vegetation), ground-biomass (litter and coarse woody debris), and below-ground biomass (roots and soil). Results showed that Mahogany stand has a total biomass of 605.25 t ha-1 while the Dipterocarp stand has 563.93 t ha-1. However, in terms of carbon content in its biomass, Mahogany has a lower value of 542.05 t C ha-1 than the value of 639.81 t C ha-1 for Dipterocarp stand.

Estimation of biomass density to carbon accumulation per sink for both Mahogany and Dipterocarp stand showed the following results: above-ground (246.63 t C ha-1 and 248.08 t C ha-1); ground biomass (20.02 t C ha-1 and 20.46 t C ha-1); and below-ground biomass (275.40 t C ha-1 and 371.27 t C ha-1). Ranking the carbon deposits per sink, below-ground biomass has the highest carbon accumulation primarily due to its soil component


Keywords: 1 Mg (megagram) = 1 ton, biomass density, carbon pool, carbon sink, tree plantation or stand

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