Estimasi Cadangan Karbon Pada Tumbuhan Bawah dan Serasah Di Hutan Pendidikan dan Penelitian Fakultas Kehutanan Universitas Mulawarman Samarinda

Abstract

Apart from its role as an educational forest, The UNMUL Fahutan Education Forest (HPFU) is the only area with production forest status in Samarinda and is currently still dominated by forest coverage. Maintaining forest coverage in HPFU is therefore an effort to ensure that the forest continues to contribute as an environmental service provider of CO2absorbers. The research objectives are (1) to estimate the C reserves of understorey and litter in young secondary forest areas, (2) to calculate the contribution of understorey and litter to the total C reserves in young secondary forests, and (3) to estimate the total reserves of C in understorey and litter in HPFU. Three slopes of 100 m long are defined in young secondary forest with gentle and slightly steep slopes. In each part of the slope, we built 1 (one) PUP of 20m x 20m which is consisted of 3 (three) Sub PUPs of 10m x 10m to represent the density of sparse, medium, and dense understorey and 1m x 1m of sub-PUPs for litter harvesting. In 18 (eighteen) PUPs, each 54 (fifty-four) Sub PUPs and Sub sub PUPs, were made in this study. The HPFU area is dominated by young secondary forest coverage with gentle and slightly steep slopes. The C reserves of theherbaceous understorey are more significant than that of woody plants. C reserves of all components studied in the gently sloping area are largerthan the steep ones. The largest C reserves are found in leaf litter for all slope positions except for a slightly steep lower slope. The largest C reserves is found in finer litter. The total C reserves of understorey and young secondary forest organic litter in HPFU 933.4 tons and 95.9 percent are stored in a litter.