Pendugaan Serapan Karbon Dioksida di Areal Rehabilitasi Hutan Pendidikan Gunung Walat Sukabumi

Abstract

Estimation of carbon dioxide (CO2) sequestration in rehabilitation areas is necessary to evaluate environmental benefits of a forest rehabilitation project. This study was aimed to estimate the CO2 sequestration of young stands in two rehabilitation project areas of Gunung Walat Educational Forest (GWEF), i.e. COPI and TOSO project areas. Field measurement was conducted to measure diameter and height of trees in 61 sample plots, which were established systematically in the rehabilitation project areas. Appropriate allometric models were used to estimate biomass and CO2 sequestration of each sample tree species. The population estimation of CO2 sequestration was conducted by applying two sampling methods, i.e. simple random sampling and stratified sampling. The results showed that by using stratified sampling the total CO2 sequestration of COPI area was 15.57 tons and that of TOSO was 13.22 tons. These estimates were more accurate than those of simple random sampling, which produced total CO2 sequestration of 13.45 tons for COPI and 13.47 tons for TOSO. Therefore, it can be concluded that estimation with stratification provided better results than without stratification.