This report compiles and synthesizes information from the fourth biennial reports submitted to the secretariat by Parties included in Annex I to the Convention relating to implementation of the Convention, such as information on quantified economy-wide emission reduction targets and progress towards those targets, including information on mitigation actions and their effects and estimates of emission reductions and removals and the use of units from market-based mechanisms and land use, land-use change and forestry activities; greenhouse gas emission trends and projections; and the provision of financial, technological and capacity-building support to developing country Parties.