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Idea Transcript
Estimation of AboveGround Carbon Stocks with ReducedImpact and Conventional Logging Practices in East Kalimantan, Indonesia Hari Priyadi 1 , Markku Kanninen 1 , Gen Takao 1 , Ika Heriansyah 2 1
Center for International Forestry Research (CIFOR), P.O. Box 0113, BOCBD Bogor 16000, INDONESIA 2 Forestry Research and Development Agency (FORDA), Jl. Gunung Batu, No. 5 Bogor 16610, Indonesia
The study was conducted in dipterocarp natural production forests in East Kalimantan, Indonesia within a 50,000 ha forest concession. CIFOR has conducted longterm research comparing reducedimpact logging (RIL) with conventional logging in this particular area. Data were collected from the logging concession area by destructive sampling. The objective of the study was to estimate the aboveground carbon stocks with different logging practices using allometric models.
The allometric models were constructed using data from permanent sample (PSPs) from the same site as the concession. For the construction of these models, we used trees with φ ≥ 20 cm DBH.
We found that average aboveground tree biomass in primary forest of Kalimantan was 357 Mg ha 1 . As we used carbon fraction of 0.45, the total aboveground carbon stock was 161 Mg C ha 1 . In extensively harvested forests using conventional logging, the carbon removed was over 100 Mg C ha 1 . Our study shows that reducedimpact logging retained 38.8% more carbon than the conventional logging. We conclude that the best logging practices should be applied in order to better meet forest management objectives and to reduce emission from forest degradation.