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A Global Model of Climate Change Impacts on Timber Markets

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Several papers have now estimated the impact of climate change on national timber markets, but few studies have measured impacts globally. Further, the literature on impacts has focused heavily on changes in productivity and has not integrated movements of biomes as well. Here, a dynamic model of ecological change and economic change is developed to capture the impact of climate change on world timber markets. Climate change is predicted to increase global timber production as producers in low-mid latitude forests react quickly with more productive short-rotation plantations, driving down timber prices. Producers in mid-high latitude forests, in contrast, are likely to be hurt by the lower prices, dieback, and slower productivity increases because of long-rotation species. Consumers in all regions benefit from the lower prices, and the overall impacts of climate change in timber markets are expected to be beneficial, increasing welfare in those markets from 2% to 8%.
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... Finally, another model that can be classified under the tag of a FSM is the forward-looking dynamic Model of Global Timber Markets (Sohngen et al. 1999, Sohngen at al. 2001, also called Global Timber Model (Sohngen & Mendelsohn 2003), which is based on control theory. ...
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An economic model for the Colombian forest sector (Colombian Forest Sector Model – CFSM) is developed and used to analyse Colombia´s commercial forest plantation policy covering the 2018 – 2038 horizon (PFCm policy). The CFSM is a structural partial equilibrium econometric model that forecasts quantities and prices for the Colombian forest product markets using the neoclassical theory of competitive markets. Phase I of the CFSM (CFSM-I), developed in detail in this dissertation, includes a simulator of growth and yield for the Colombian forest plantations and two market (sub)models: for Unprocessed Wood and for Manufactured Wood Products. Using the CFSM-I, two PFCm policy goals were simulated to unveil their impacts on the Colombian forest sector. Simulations of an expansion of Colombia’s forest plantation current area (0.3 million hectares, Mha, on Dec 2015) to 1.5 Mha by 2025 indicate that Colombia would increase the 2015-2047 volume available of industrial wood in plantations by 5 times (annually 20.8 million cubic meters of underbark roundwood, on average). In monetary values, this expansion would importantly impact the unprocessed wood market. Supply and exports of wood would multiply by 2.5 and 14.5 times in the next 25 years meanwhile its price of supply would drop by 24%, respectively, and on average, compared to the scenario of no expansion of the current plantations. Simulations of a 2023-2038 5.5-times expansion of the current (2022) production capacity of Colombia’s manufactured wood forest products industry show that on average in the next 25 years and compared to the no expansion scenario, consumption of unprocessed wood and manufactured wood products of the pulp and paper industry would increase by 8% each, and the imports of the latter and of manufactured products of the furniture industry would decrease by 35% and 25%, respectively. Alternative policies of plantation area expansion (0.45 Mha, 0.765 Mha, and 2.0 Mha under sustained rotation, and 0.3 Mha harvested without replanting) also simulated enrich the set of information for policy makers and other stakeholders in preparation for the first round of the PFCm policy evaluation, scheduled for 2023 after the completion of its first implementation period in December 2022.
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