Each Party included in Annex I shall account for all changes in the following carbon pools: above-ground biomass, below-ground biomass, litter, dead wood and soil organic carbon.
21. 每个附件一所列缔约方应核算下列碳集合的所有变化：地面生物量、地下生物量、废弃物、枯木、土壤内的有机碳。