Penaksiran Tingkat Emisi dan Sequestrasi Karbon di Jawa Timur

Climate change mitigation from forestry and other land use is an effort to reduce the level of greenhouse gas emissions (GHG) in the atmosphere through optimizing carbon stocks in forest and non-forest. Extent of agroforestry/community forests in East Java has increased, it can be potential to enhance terestrial carbon stocks and reduce carbon emissions level. The purpose of this research was to estimate the level of carbon emissions in East Java (1994-2001, 2001-2006, and 2006-2012). Carbon emissions from land use change (MgCO2 yr-1) were calculated by RaCSA (Rapid Carbon Stock Appraisal) using REDD ABACUS SP software. Emission level was calculated by integrating the activity data due to changes in land cover (ha yr-1) with emission factors due to changes in time averaged carbon stock of the two land uses (Mg CO2 ha-1). Period of 1994-2001, the emissions level in East Java was 0.23 Mg CO2 ha-1 yr-1. Emission level increased to 7.64 Mg CO2 ha-1 yr-1 in 2001-2006). It was caused by change of 10% forest, 25% plantation and 21% agroforestry to other land uses. However, in the period of 2006-2012, the emission level had negative value or even sequest of 2.39 Mg CO2 ha-1yr-1. It was due to a significant increase (approximately 22%) on agroforestry in East Java. Emission level in East Java was much lower than the national average emission around 2.14 Mg CO2 ha-1 yr-1. It was calculated with the same procedure, but the data at the national level were calculated based on tree biomass carbon stock.

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