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This chapter introduces the Global Forest Products Model (GFPM). The general model structure and the mathematical formulation of the GFPM are provided and key differences and similarities to the modeling approaches developed in the previous chapters are high­ lighted. The usefulness of the GFPM as a forest sector tool for policy analysis is illustrated by summarizing its applications in a wide array of past and ongoing studies. These studies are summarized under four representative groups: (i) forest sector outlook studies; (ii) studies evaluating the consequences of tariff and non-tariff barriers on the international trade of forest products; (iii) studies projecting the impacts of climate change and forest-based climate change mitigation strategies on forests and forest industries; and (iv) other studies dealing with other important questions, such as the effects of the rise in global planted forest area, illegal harvests, and invasive species. Some of the limitations of GFPM, ways to mitigate these limi­ tations, and its overall usefulness as a forest sector policy analysis tool are also examined. The Global Forest Products Model (GFPM) offers an alternative approach to the spatial price equilibrium (SPE) trade models described in the previous chap­ ters and the models reviewed by Latta et al. (2013). The GFPM is also an SPE trade model and therefore shares fundamentally similar model constructs to the Resource Economics and Policy Analysis (REPA) model. It also utilizes demand and supply equations and data on production, consumption, prices, manufac­ turing costs, and transport costs to maximize the sum of the consumer and pro­ ducer surpluses for all products in all regions. However, the two models differ in many respects (Table 6.1) including the following. • GFPM is calibrated using historical goal programming as opposed to posi­ tive mathematical programming in the REPA model (see Chapter 4, section 4.2, this volume). © CAB International 2021. DOI: 10.1079/9781789248234.0006 110 111 © CAB International 2021. For personal use of authors. Global Forest Products Trade Model Table 6.1. Major differences between the REPA trade model and GFPM. (Authors' own table.)

Global forest products trade model.