Potential carbon stocks of hardwood, softwood, and varied growth rate species in Pasir Hantap Research Forest, Sukabumi, West Java

Abstract Climate change has become a global phenomenon with signi2icant impacts on the environment. Indonesia has committed to reducing its emissions by 29% by 2030 through domestic efforts and 41% through international cooperation. The forestry sector plays a crucial role, with a potential reduction of 17.2% in emissions. One of the tropical forest areas that has the potential to help store carbon stocks is the Pasir Hantap Research Forest, Sukabumi. Pasir Hantap Research Forest is located in the tropics and is characterized by diverse, naturally occurring and planted vegetation. The forest has varying slopes, ranging from 10° to 45°, which can affect tree growth and biomass. The study will analyze the carbon stock potential of hardwood groups (Shorea sp. mixed), softwood groups (Pinus sp. mixed), fast-growing species groups (Eucalyptus sp. mixed), and slow-growing species groups (Swietenia macrophylla mixed) and examine the in2luence of slope on carbon storage. The overall results of carbon stock estimation in the four groups of stands did not show signi2icantly different results. The highest average carbon stock was in the mixed Swietenia macrophylla group at 423.84 tons/ha, while the lowest average was in the mixed Shorea sp. group at 128.76 tons/ha. The results of carbon stock estimation are negatively correlated with slope. The estimated value of carbon stocks in the mixed Swietenia macrophylla group decreased as the degree of slope increased. Meanwhile, the estimation of carbon stocks in the mixed Pinus group increased as the degree of the slope increased.