The case studies are drawn mainly from the literature, given the time constraints of this report. In the studies available, only IPCC and FAO definitions for ARD activities have been applied, rather than all of the definitional scenarios in Section 3.2 . Carbon debits, though limited to lands cleared during the commitment period, account for the loss of a large portion of the carbon accumulated during the lifetime of the stand. Debits will exceed credits, except in regions with very quickly maturing forests. Country and regional ARD case studies applying FAO and IPCC definitional scenarios.
Negative values are emissions, and positive values removals.
Values in brackets are from Nabuur et al. , 2000. The term LUCF is used in the second national communications. In contrast, reforestation under the FAO scenario provided an additional debit to 1990 CO 2 emissions of up to 27 percent for countries with large reforested areas and relatively slow regrowth when stock changes are calculated for the entire commitment period. These estimates, however, have excluded possible changes in soil and dead organic matter carbon. Including these pools will change the results, as demonstrated by the stand and landscape-level examples in Sections 3.5.1 and 3.5.2 .