Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 40
Primeira ... 12 ... Última
Imagem não selecionada

Imprime registro no formato completo
Assessing the Uncertainty of Land Based Carbon Sequestration: A Parameter Uncertainty Analysis with a Global Land Use Model AgEcon
Kim, Yoon Hyung; Sohngen, Brent.
This paper analyzes the effect of uncertainty in several key parameters on the marginal costs of carbon sequestration in forests. These parameters include the land supply elasticity, which governs the conversion of land from agriculture to forests and vice versa; parameters of the forest biomass yield function; parameters of the forest carbon density function; and parameters of the costs functions for accessing inaccessible land. Monte Carlo techniques are thus used to turn the global forest model with no probability (e.g., Sohngen & Mendelsohn, 2003; 2007) into a proper probability model through Latin hypercube sampling. For this paper, we have restricted our analysis to consideration of probability distributions for only two of the parameters...
Tipo: Working or Discussion Paper Palavras-chave: Uncertainty Analysis; Global Land Use Model; Carbon Sequestration; Monte Carlo simulations; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/49416
Imagem não selecionada

Imprime registro no formato completo
The Relative Role of Land in Climate Policy AgEcon
Golub, Alla A.; Hertel, Thomas W.; Rose, Steven K.; Sohngen, Brent; Avetisyan, Misak.
Replaced with revised version of paper 06/26/09.
Tipo: Conference Paper or Presentation Palavras-chave: Climate policy; Land use related emissions; Carbon forest sequestration; CGE; Environmental Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/49513
Imagem não selecionada

Imprime registro no formato completo
Paying for Avoided Deforestation - Should We Do It? AgEcon
Sohngen, Brent.
Tipo: Journal Article Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy; Q23; Q56; Q57.
Ano: 2008 URL: http://purl.umn.edu/94502
Imagem não selecionada

Imprime registro no formato completo
Biofuel Growth: Global Greenhouse Gas Emissions Impacts from Changes in Forest Carbon Stocks AgEcon
Golub, Alla A.; Hertel, Thomas W.; Rose, Steven K.; Sohngen, Brent.
There is significant policy interest in liquid biofuels with appealing prospects for energy security, farm security, poverty alleviation, and climate change. Large-scale commercial biofuel production could have far reaching implications for regional and global markets – particularly those related to energy and land use. As such, large-scale biofuels growth is likely to have significant impacts on global greenhouse gas (GHG) emissions. This paper utilizes a CGE model with explicit biofuel, land, and energy markets. The model is able to estimate the effects on the broad range of input and output markets potentially affected globally by biofuels policies. One of the most controversial issues within the biofuels debate is potential indirect changes in land use...
Tipo: Conference Paper or Presentation Palavras-chave: Land use change; Biofuels; CGE model; Forest carbon stocks; GHG emissions; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/47450
Imagem não selecionada

Imprime registro no formato completo
TO ADOPT OR NOT TO ADOPT: CONSERVATION DECISIONS AND PARTICIPATION IN WATERSHED GROUPS AgEcon
Hua, Wei; Zulauf, Carl R.; Sohngen, Brent.
Replaced with revised version of paper 07/21/04.
Tipo: Conference Paper or Presentation Palavras-chave: Farm Management.
Ano: 2004 URL: http://purl.umn.edu/20076
Imagem não selecionada

Imprime registro no formato completo
Economics of Forest Ecosystem Carbon Sinks: A Review AgEcon
van Kooten, G. Cornelis; Sohngen, Brent.
Carbon terrestrial sinks are seen as a low-cost alternative to fuel switching and reduced fossil fuel use for lowering atmospheric CO2. In this study, we review issues related to the use of terrestrial forestry activities to create CO2 offset credits. To gain a deeper understanding of the confusing empirical studies of forest projects to create carbon credits under Kyoto, we employ meta-regression analysis to analyze conditions under which forest activities generate CO2-emission reduction offsets at competitive ‘prices’. In particular, we examine 68 studies of the costs of creating carbon offsets using forestry. Baseline estimates of costs of sequestering carbon are some US$3–$280 per tCO2, indicating that the costs of creating CO2-emission offset credits...
Tipo: Working or Discussion Paper Palavras-chave: Climate change; Kyoto Protocol; Meta-regression analysis; Carbon-uptake costs; Forest sinks; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q2; Q25; H43; C19.
Ano: 2007 URL: http://purl.umn.edu/37037
Imagem não selecionada

Imprime registro no formato completo
A GLOBAL MODEL OF CLIMATE CHANGE IMPACTS ON TIMBER MARKETS AgEcon
Sohngen, Brent; Mendelsohn, Robert; Sedjo, Roger A..
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...
Tipo: Journal Article Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2001 URL: http://purl.umn.edu/31044
Imagem não selecionada

Imprime registro no formato completo
THE VALUE OF AGRICULTURAL ECONOMICS EXTENSION PROGRAMMING: AN APPLICATION OF CONTINGENT VALUATION AgEcon
Roe, Brian E.; Haab, Timothy C.; Sohngen, Brent.
We use the contingent valuation method to estimate participant willingness to pay for agricultural economics extension programming. The data, collected as part of standard evaluation forms for the Ohio State University's 2001 Agricultural Outlook and Policy program series, and subsequent analysis suggest participant benefits exceeded departmental costs of conducting the program (benefit-cost ratios of 1.07 under conservative assumptions and 1.74 under moderate assumptions). We also use the data to explore the revenue generation potential from alternative program pricing and discuss the potential for developing differentiated programs to reach distinct audience segments. Additional research necessary before implementing alternative pricing or program...
Tipo: Conference Paper or Presentation Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2002 URL: http://purl.umn.edu/19861
Imagem não selecionada

Imprime registro no formato completo
An Analysis of Global Timber Markets AgEcon
Sohngen, Brent; Mendelsohn, Robert; Sedjo, Roger A.; Lyon, Kenneth S..
This paper presents a model of global timber markets that captures the evolution of a broad array of forest resources and timber market margins over time. These margins include the inaccessible northern and tropical margins, plantation establishment, and timberland management. A baseline case is presented and discussed. Five alternative scenarios are then presented. These scenarios allow us to consider several important questions about timber market behavior and the future supply of industrial fiber: (1) What happens along the northern and the tropical inaccessible margins? (2) What role do timber plantations play? and (3) How do shifts in management intensity interact with market forces? The baseline case suggests that both prices and harvests rise over...
Tipo: Working or Discussion Paper Palavras-chave: Global timber markets; Forest plantations; Model; Forecast; Resource /Energy Economics and Policy; Q10; Q21; Q23; Q24.
Ano: 1997 URL: http://purl.umn.edu/10449
Imagem não selecionada

Imprime registro no formato completo
Exchange Rates and the Competitiveness of the US Timber Sector in a Global Economy AgEcon
Daigneault, Adam J.; Sohngen, Brent; Sedjo, Roger A..
This paper examines the competitiveness of the US timber industry under different exchange rate policies using a dynamic optimization model of global timber markets. We assume that exchange rates affect the cost structure of harvesting and managing forests and simulate the model for baseline conditions and four additional exchange rate policies. Two policies consider a strengthening United States dollar scenario and two policies examine weak South American currencies. Recently South America has increased its share of global timber production and is shipping increasing quantities of timber to the Unites States. The results indicate that US competitiveness in the forestry sector is sensitive both to strong US $ policies and to the weak currency policies...
Tipo: Conference Paper or Presentation Palavras-chave: International Relations/Trade.
Ano: 2005 URL: http://purl.umn.edu/19439
Imagem não selecionada

Imprime registro no formato completo
Integrated watershed economic model for non-point source pollution management in the Upper Big Walnut Creek watershed, OH AgEcon
Surendran Nair, Sujithkumar; Sohngen, Brent; King, Kevin W.; Fausey, Norman R.; Witter, Jonathan D.; Southgate, Douglas.
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/61906
Imagem não selecionada

Imprime registro no formato completo
EFFECTS OF LOCAL DEVELOPMENT PRESSURE ON LAND PRICES: A SPATIAL ECONOMIC APPROACH AgEcon
Jeanty, Pierre Wilner; Kraybill, David S.; Libby, Lawrence W.; Sohngen, Brent.
We conduct a study to examine the effects of local development pressure and other factors on the value of urban-fringe land parcels. Multiple regression spatial models were estimated using parcel- level data from Delaware County, Ohio. The empirical results provide evidence that such factors as man-made and natural features are relevant in determining property values. The econometric findings indicate that local development pressure contributes profoundly to an increase in current land prices. These results shed light on the magnitude of the effects of recently developed land and provide insights into policies to preserve farmland and the associated environmental benefits.
Tipo: Conference Paper or Presentation Palavras-chave: Community/Rural/Urban Development; Land Economics/Use.
Ano: 2002 URL: http://purl.umn.edu/19767
Imagem não selecionada

Imprime registro no formato completo
Global interactions between bioenergy and climate policies AgEcon
Golub, Alla A.; Hertel, Thomas W.; Rose, Steven K.; Sohngen, Brent.
Over the past few years, interest in bioenergy has boomed with higher oil prices and concerns about energy security, farm incomes, and mitigation of climate change. In the same time, there is significant interest in international agricultural and forestry based greenhouse gas (GHG) mitigation. However, bioenergy and climate policies are being formulated largely independent of one another. Understanding the interaction between these potentially competing policy objectives is valuable for identifying possible constraints that one policy might be placing on the other, as well as potential complementarities. Using a general equilibrium framework, this study assesses the effects of bioenergy expansion on sectoral, regional and global GHG emissions mitigation...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy; International Relations/Trade.
Ano: 2010 URL: http://purl.umn.edu/61592
Imagem não selecionada

Imprime registro no formato completo
Role of New Zealand Forests in Global Climate Change Mitigation AgEcon
Daigneault, Adam J.; Sohngen, Brent.
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/115351
Imagem não selecionada

Imprime registro no formato completo
THE OPTIMAL CHOICE OF RESIDUE MANAGEMENT, CROP ROTATIONS, AND THE COST OF SOIL CARBON SEQUESTRATION AgEcon
Choi, Suk-Won; Sohngen, Brent.
This paper develops a dynamic model of land, crop, and residue management choices in a typical Midwestern farm region. Carbon renting policy is implemented with alternative assumptions about relative crop prices. Model results show following results. First, crop choice between corn and soybean within a scenario does not appear to be sensitive to carbon prices. Second, residue management and carbon storage depend on crop prices and total carbon storage in soil is the greatest when more land is maintained in soybean. Third, there would be 4-7% increase in carbon per hectare with $3 per ton carbon price, 13-23% increase with $10 per ton carbon price, and 31-55% increase in carbon storage with $40 per ton carbon price.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/21930
Imagem não selecionada

Imprime registro no formato completo
Zoning, Development Timing, and Agricultural Land Use at the Suburban Fringe: A Competing Risks Approach AgEcon
Hite, Diane; Sohngen, Brent; Templeton, Josh.
Competing risks survival analysis is used to investigate tax and zoning policy impacts on residential, commercial, and industrial development timing in a rapidly growing Midwestern county. Industrial development appears both to precede and occur concurrently with residential development, while commercial development follows other types. Although residences appear to locate away from industrial land, zoning decisions favoring industry may attract rather than deter residential development within a jurisdiction. Regions with higher infrastructure taxes experience development later. Because school taxes fund local public goods important to homeowners, they have little influence on residential timing, but strong influences on industrial and commercial timing.
Tipo: Journal Article Palavras-chave: Land Economics/Use.
Ano: 2003 URL: http://purl.umn.edu/31350
Imagem não selecionada

Imprime registro no formato completo
Conservation Compliance: The Once and Future Farm Environmental Policy Tool AgEcon
Zulauf, Carl R.; Sohngen, Brent; Hoskinson, Lindsey; Lines, Allan E..
Tipo: Journal Article Palavras-chave: Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/93707
Imagem não selecionada

Imprime registro no formato completo
LAND USE CHANGE AND PROPERTY TAXES: AN EMPIRICAL STUDY OF THE EFFECT OF PROPERTY TAXES ON THE TIMING OF LAND CONVERSION FROM AGRICULTURAL TO RESIDENTIAL DEVELOPMENT AgEcon
Sohngen, Brent; Hite, Diane; Templeton, Josh.
This study explores how property taxes affect the timing of development. The theoretical literature suggests that higher taxes increase the time to development, although there is some disagreement in the literature. We present a simple theoretical model to motivate an empirical model that explores how land use change decisions are made over time. A hazard model is used to predict factors that influence the time to development over an 11-year period in an urbanizing county in the Midwestern corn belt. The results suggest that higher taxes slow development, as expected. Over the 11-year period for our sample, we predict that 25% more agricultural land would have converted to development if taxes had not risen. We also find, however, that the effects are...
Tipo: Conference Paper or Presentation Palavras-chave: Land Economics/Use.
Ano: 2001 URL: http://purl.umn.edu/20773
Imagem não selecionada

Imprime registro no formato completo
ESTIMATING DYNAMIC RECREATIONAL DEMAND BY THE HEDONIC TRAVEL COST METHOD AgEcon
Yeh, Chia-Yu; Sohngen, Brent.
This research explores how recreational values change over time. Hedonic functions linking travel costs to site amenities are estimated using data on nearly 70,000 visitors to Ohio State Parks from 1997 to 2002. The results suggest substantial changes in recreational values over time. Effects are estimated to show the importance of capturing changes in the hedonic prices.
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2004 URL: http://purl.umn.edu/20165
Imagem não selecionada

Imprime registro no formato completo
A Comparison of Timber Models for Use in Public Policy Analysis AgEcon
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
Registros recuperados: 40
Primeira ... 12 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional