This methodology report provides a detailed description of background, assumptions, approaches and modelling tools utilized in the UNECE Forest Sector Outlook Study 2020-2040 (FSOS) main report. The main report summarizes and discusses the forest sector impacts in UNECE region and subregions of reference and “what-if” scenarios depicting future trajectory of socioeconomic changes, climate change, and structural changes in demand, supply and trade of forest products, globally and in the UNECE region and subregions. More specifically, this methodology report provides detailed information on i) the selected sets of reference and the alternative “what-if” scenarios, including their development and selection process, assumptions, and justification, and ii) the modelling approaches and global models utilized to simulate and analyse those scenarios, including the Global Forest Products Model (GFPM) and an adjunct to the GFPM that generates separate estimates of carbon sequestered in forest biomass and in harvested wood products.
Includes bibliographic references