**4. Conclusions**

In this chapter, the AGB, BGB and TTB of lowland dipterocarp, riparian and HDF have been estimated. Analysis of AGB, BGB and TTB between forests showed that means of AGB, BGB and TTB values in HDF were significantly higher than LDF and riparian (p ≤ 0.05). The distribution of AGB, BGB and TTB according to diameter class revealed higher AGB, BGB and TTB values in >70 cm class for all forests. HDF was highest in most diameter class except for 40.0–69.9 cm. LDF obtained highest biomass in 40.0–49.9 cm whereas RF for 50.0–69.9 cm. There was no significant interaction between lowland dipterocarp, riparian and HDF and five similar families (i.e. Anacardiaceae, Burseraceae, Dipterocarpaceae, Euphorbiaceae and Leguminosae) with (p > 0.05). However, the interaction between lowland dipterocarp, riparian and HDF and five similar species (i.e. *Canarium littorale (*Burseraceae), *Elateriospermum tapos* (Euphorbiaceae), *Ochanostachys amentacea* (Olacaceae), *Pimelodendron griffithianum* (Euphorbiaceae) and *Shorea leprosula* (Dipterocarpaceae) was significant at (p ≤ 0.05). The estimation of carbon storage in the study areas demonstrated HDF attained the highest carbon value in above ground, below ground and total tree with value of 246.88, 42.64 and 289.52 t/ha, respectively.
