Evaluating aboveground biomass and carbon stock of Shorea platyclados, Agathis borneensis and Gymnostoma sumatranum in compartment 5 Gunung Siku Forest Reserve, Cameron Highland

Global climate change such as increasing greenhouse emission is often related with deforestation. Forest is most important that link with global climate change where trees absorbed carbon dioxide (CO2) in atmosphere and help to regulate climate. A study was conducted in Gunung Siku Forest Reserve, Cameron Highland. A reforestation site which had been planted with two hundred and fifty saplings of Shorea platyclados, Agathis borneensis and Gymnostoma sumatranum since February 2015. Data collections were done every six month. In this study, these three species were measured and their aboveground biomass (AGB) and carbon stock were determined subsequently. Gymnostoma sumatranum showed the most changes in growth performance which was 0.44% increase in diameter compared to Shorea platyclados and Agathis borneensis were 0.35% and 0.08% respectively. The first, second and third objectives were achieved in which all the three species showed increasing in growth performance. For these three species, total amount for AGB per hectare (ha) were 602.74 kg/ha on February 2016 and 1074.56 kg/ha on August 2016. The total amount of carbon stock per hectare (ha) on February and August 2016 were 301.37 kgC/ ha and 537.26 kgC/ha respectively. This showed the steady increase of AGB and carbon stock in this reforestation area. The planting of non-native tree species in the area would possibly boost the increment in growth area as well as AGB and carbon stock.