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| Registros recuperados: 128 | |
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| Sedjo, Roger A.; Goetzl, Alberto. |
| This discussion paper reports on a Workshop on Wood Fiber Supply Modeling held October 3-4, 1996 in Washington, DC. The purpose of this discussion paper is to provide an overview of some of the modeling work being done related to timber supply modeling and some of the issues related to the more useful application of wood fiber supply and projections models. This paper includes brief presentations of three commonly used long-term timber projections and forecasting models: the Timber Assessment Market Model (TAMM) of the Forest Service; the Cintrafor Global Trade Model (CGTM) of the University of Washington; and the Timber Supply Model (TSM) of Resources for the Future. Also, issues related to the useful of the models are addressed as well as a discussion of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Timber models; Market forecasting models; Wood fiber supply; Projections; Resource /Energy Economics and Policy; C62; Q21; Q23. |
| Ano: 1997 |
URL: http://purl.umn.edu/10486 |
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| De Pinto, Alessandro; Nelson, Gerald C.. |
| Land use change in developing countries is of great interest to policymakers and researchers from many backgrounds. Concerns about consequences of deforestation for global climate change and biodiversity have received the most publicity, but loss of wetlands, declining land productivity, and watershed management are also problems facing developing countries. In developing countries, analysis is especially constrained by lack of data. This paper reviews modeling approaches for data-constrained environments that involve methods such as neural nets and dynamic programming and research results that link individual household survey data with satellite images using geographic positioning systems. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use; Q15; Q23; R14. |
| Ano: 2006 |
URL: http://purl.umn.edu/25723 |
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| Bergeron, Nancy; Sedjo, Roger A.. |
| El Nino events are likely to affect maple syrup production since it is very sensitive to weather patterns. A statistically significant direct correlation has not been found in our preliminary analysis, however. This may be because many other factors affect production and because weather anomalies also occur in non-El Nino years. Few defensive activities are available to maple syrup producers to alleviate the negative impacts of weather anomalies on their production. Hence, the value of El Nino-Southern Oscillation (ENSO) forecasts to them is likely to be low, even if a clear correlation between productivity and ENSO events was eventually found. Overall, small welfare impacts of El Nino weather events are expected from their impact on the maple syrup... |
| Tipo: Working or Discussion Paper |
Palavras-chave: El Nino; Forests; Maple syrup; Economic welfare effects; Dieback; Resource /Energy Economics and Policy; D61; Q10; Q20; Q23; N5. |
| Ano: 1999 |
URL: http://purl.umn.edu/10671 |
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| Sedjo, Roger A.; Lyon, Kenneth S.. |
| This study involves an update of our earlier Timber Supply Model, which was fully developed in our book, The Adequacy Of Global Timber Supply by Sedjo and Lyon (1990), published by Resources for the Future. The new version, called Timber Supply Model 1996 (TSM96), uses an economic market supply/demand approach to project an intertemporal time path of the world's price and output level of industrial wood. As did the original TSM, the TSM96 provides projections of the time path of the equilibrium output levels of the several regions into which the world has been subdivided. A major new feature of TSM96 is that industrial wood, treated as homogeneous in the earlier study, has be subdivided into two different wood types -- pulpwood and solidwood. The supply of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Timber models; Markets; Optimal control; Projections; Timber supply; Resource /Energy Economics and Policy; C62; Q21; Q23. |
| Ano: 1996 |
URL: http://purl.umn.edu/10696 |
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| Sohngen, Brent; Sedjo, Roger A.. |
| In this paper, we compare and contrast two types of timber models that have been used for public policy analysis. These models have been variously used to predict price, inventory and market welfare impacts under different exogenous forces that impact timber markets. The framework and theory for each model type is presented and discussed. We then thoroughly test the two model types across six potential exogenous shocks to timber markets, ranging from instantaneous demand shocks to gradual supply adjustments. Our comparison indicates that these models predict potentially important differences in timber market behavior. These differences are important to consider for those who do public policy analysis. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Timber markets; Models; Dynamic adjustment; Optimization; Resource /Energy Economics and Policy; C62; Q21; Q23. |
| Ano: 1996 |
URL: http://purl.umn.edu/10467 |
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| Nagubadi, Rao V.; Zhang, Daowei. |
| Land use changes and timberland use by ownership and forest type in Alabama and Georgia between 1972 and 2000 are analyzed using a modified multinomial logit approach. Low average land quality, federal cost-share incentives, and favorable returns to forestry relative to agriculture were the main factors associated with timberland increase. Higher forestry returns helped increase industrial timberland but not nonindustrial private forests. An increase in hardwood forests at the expense of softwood and mixed forests was driven by increasing hardwood returns. Increasing softwood returns and tree planting assistance programs alleviated declines in softwood forests. Because factors influencing timberland use changes differ by ownership and forest type,... |
| Tipo: Journal Article |
Palavras-chave: Forest type; Land use determinants; Modified multinomial logit; Timberland ownership; Land Economics/Use; Q15; Q23; R15. |
| Ano: 2005 |
URL: http://purl.umn.edu/43726 |
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| Ando, Amy Whritenour. |
| This paper explores the influence of the behavior of the Forest Service and Bureau of Land Management on effective public policy toward the national forests. It shows that fluctuations in stumpage sales from such forests have been large. Furthermore, those fluctuations could well have a significant impact on the price elasticity of harvest even with large stocks of uncut volume under contract. System analysis of harvest and sale patterns in nine regions during the period 1951-1992 shows that stumpage sales displayed little correlation with prices during the period; the positive price elasticity of harvest seems to have been induced largely by the behavior of logging firms. However, it finds a positive link between National Forest budgets and annual sales.... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Stumpage; Harvest; Sales; National Forests; Budget; Price elasticity; Resource /Energy Economics and Policy; Q23; Q28. |
| Ano: 1997 |
URL: http://purl.umn.edu/10456 |
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| Riedacker, Arthur. |
| As average growth consumptions per capita and world population will continue to grow, the promotion of sustainable developments during the next half a century implies to take into account environmental aspects, local potentialities and futures changes in population as well climatic, economic and social factors. At the global level, land and fossil fuel availability per capita, capacity of absorption of greenhouse gas emissions are considered the most important environmental factors. Whereas at local levels are to be considered preservation or improvement of soil fertility, of water regimes, of quality of air, soil and water. Biodiversity must be taken into account at both levels to cope also with climate change. But as underlined by IPCC lead authors, up... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Greenhouse Gas Emission; Fossil Fuel; Biodiversity; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy; Q23; Q27. |
| Ano: 2007 |
URL: http://purl.umn.edu/9551 |
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| Krcmar, Emina; Eagle, Alison J.; van Kooten, G. Cornelis. |
| In Canada, governments have historically promoted economic development in rural regions by promoting exploitation of natural resources, particularly forests. Forest resources are an economic development driver in many of the more than 80% of native communities located in forest regions. But forests also provide aboriginal people with cultural and spiritual values, and non-timber forest amenities (e.g., biodiversity, wildlife harvests for meat and fur, etc.), that are incompatible with timber exploitation. Some cultural and other amenities can only be satisfied by maintaining a certain amount of timber in an old-growth state. In that case, resource constraints might be too onerous to satisfy development needs. We employ compromise programming and fuzzy... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Forest-dependent aboriginal communities; Boreal forest; Compromise and fuzzy programming; Sustainability and uncertainty; International Development; Resource /Energy Economics and Policy; R11; Q23; Q01; C61. |
| Ano: 2007 |
URL: http://purl.umn.edu/10251 |
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| Registros recuperados: 128 | |
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