Carbon dioxide (CO2) storage potential of multistorey agroforestry systems in Mt. Makiling [Philippines]
1999
Zamora, D.S.
Results of the study showed that the total biomass produced were 207.30 tons/ha and 99.19 tons/ha in the Narra-Cacao and Coconut-Coffee systems, respectively. These amounted to 170.69 tons/ha and 112.18 tons/ha of carbon stored in the Narra-Cacao and Coconut-Coffee systems, respectively. These number already include the soil organic carbon which comprise more than 50% of the total carbon stored. Correlation analysis indicated that carbon storage was affected by the amount of biomass produced, height and diameter range of the tree components, amount of soil organic carbon and soil bulk density, and moisture content regime of the vegetation. The amount of carbon stored is strongly and positively correlated with the first three factors. However, moisture content is negatively correlated with the amount of carbon stored. Results of the study also indicated that multistorey agroforestry system has the potential to mitigate the effect of climatic change by storing or sequestering huge amount of carbon from the atmosphere. A grassland area of 1.18 x 10 sup 6 hectares could store carbon amounting to 132 M tons to 210 M tons when the area is developed into multistorey agroforestry system. This is more than sufficient to offset the annual carbon emission in the Philippines of 128.6 M tons. However, if it remains as grassland, said area will only store 12.73 M tons of carbon. Introducing or incorporating other agroforestry species to the existing 3.2 million coconut plantation in the Philippines will store 350 M tons to 550 M tons carbon which is 2-4 times the total carbon emission in the Philippines
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