Case study: Country inventory (Bulgaria)

Sadie S

Methane from enteric fermentation and N2O from animal sources have consistently been identified as key sources in Bulgaria’s GHG inventory. Together, cattle and sheep have accounted for 80-90% of enteric fermentation emissions in each inventory year since the late 1980s. Bulgaria began to use the IPCC Tier 2 approach for cattle in 2010, and for sheep in 2011. Inventories since 2003 have reported using a Tier 2 approach for methane emissions manure management, but no technical description of the approach used is given in the inventory reports. This case study describes the countries approach for cattle, swine and sheep.