The use of local species for revegetation activities is expected to accelerate the natural regeneration to increase the biodiversity in restoration efforts of disturbed areas. This study used several parameters to observe the growth of 20-years old stand S. pinanga and S. platyclados, including diameter, total tree height, Mean Annual Increment (MAI), % of fruiting trees, Leaf Area Index (LAI), altitude, and slope. The study results were analyzed using one-way variance analysis (ANOVA) and Duncan test with a 95% confidence level. The results showed that S. platyclados significantly had a higher diameter (32.7 cm), height (19.1 m), and mean volume (0.43 m 3 ) compared to S. pinanga. The growth of S. platyclados, which locally known as meranti bukit is strongly supported by conditions in Gunung Dahu Research Forest, which has an altitude of about 800 m.asl. On the other hand, S. pinanga, as lowland species, showed lower growth compared to S. platyclados.

Meru Betiri National Park (TNMB) has five forest formation, e.g. coastal forest, mangrove forest, swamp forest, rheophyte, and lowland rain forest. The study aims to analyze vegetation structure and composition on Rafflesia zollingeriana habitat and to map the distribution of trees in TNMB. Vegetation data, diameter at breast height, and canopy height obtained by using line-transect method and analyzed using vegetation analysis. The sampling method used purposive sampling. TNMB had 64 trees species with 1,366 seedlings and saplings, 257 poles, and 183 trees. Pancal kidang (Aglaia variegata) had the highest Important Value Index (IVI) amounting to 32.46%. The result showed that the community similarity index (IS) in two sample plots was 86.86%. Tetrastigma spp. is a liana as a host of Rafflesia zollingeriana, and only found pancal kidang, besuleh, welangan, magnolia flower, laban, and rauh trees.