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| Registros recuperados: 19 | |
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| Khanna, Madhu; Onal, Hayri; Chen, Xiaoguang; Huang, Haixiao. |
| This article develops a dynamic micro-economic land use model to identify the cost-effective allocation of cropland for traditional row crops and perennial grasses and the mix of cellulosic feedstocks needed to meet pre-determined biofuel targets over the 2007-2022 period. Yields of perennial grasses are obtained from a biophysical model and together with county level data on costs of production for Illinois are used to examine the implications of these targets for crop and biofuel costs, greenhouse gas emissions, and nitrogen use. The economic viability of cellulosic feedstocks is found to depend on their yields per acre and the opportunity cost of land. The mix of viable cellulosic feedstocks varies spatially and temporally with corn stover and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy; Land Economics/Use. |
| Ano: 2008 |
URL: http://purl.umn.edu/53491 |
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| Yang, Wanhong; Khanna, Madhu; Farnsworth, Richard L.; Onal, Hayri. |
| An integrated watershed management framework that combines economic, hydrologic and GIS modeling is developed to study cost effective land retirement in multiple watersheds to achieve off-site sediment reduction goal. This integrated framework examines two alternative standards-a uniform standard under which each watershed is required to achieve the same sediment reduction goal and a non-uniform standard under which marginal cost of sediment abatement is equal across watersheds. Furthermore, for each standard, costs of abatement under two alternative rental instruments based on marginal cost of sediment abatement ($/ton) and uniform payments per acre ($/acre) are examined. Then the cost effectiveness of the four policy options (uniform standard with $/ton... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use. |
| Ano: 2001 |
URL: http://purl.umn.edu/20687 |
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| Gomez, Miguel I.; Nunez, Hector M.; Onal, Hayri. |
| The spread of Asian Soybean Rust (ASR) represents a real threat to the U.S. soybean sector. We assess the potential impacts of ASR on domestic soybean production and commodity markets as well as the competitive position of the US in the soybean export market. We develop a mathematical stochastic dynamic sector model with endogenous prices to assess the economic impacts of ASR on US agriculture. The model takes into account the disease spread during the cropping season, the inherent uncertainty regarding the risk of infection, and the dichotomous decisions that farmers make (no treatment, preventive treatment, and curative treatment) facing the risk of infection. Our results suggest substantial impacts from potential ASR spread on agricultural output,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Asian Soybean Rust; Stochastic Models; Dynamic Models; Crop Production/Industries; C61; Q13. |
| Ano: 2009 |
URL: http://purl.umn.edu/49595 |
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| Gomez, Miguel I.; Nunez, Hector M.; Onal, Hayri. |
| The spread of Asian Soybean Rust (ASR) represents a real threat to the U.S. soybean sector. We assess the potential impacts of ASR on domestic soybean production and commodity markets as well as the competitive position of the US in the soybean export market. We develop a mathematical stochastic dynamic sector model with endogenous prices to assess the economic impacts of ASR on US agriculture. The model takes into account the disease spread during the cropping season, the inherent uncertainty regarding the risk of infection, and the dichotomous decisions that farmers make (no treatment, preventive treatment, and curative treatment) facing the risk of infection. Our results suggest substantial impacts from potential ASR spread on agricultural output,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Asian Soybean Rust; Stochastic Models; Dynamic Models; Agribusiness; Marketing; C61; Q13. |
| Ano: 2009 |
URL: http://purl.umn.edu/51177 |
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| Yang, Wanhong; Khanna, Madhu; Farnsworth, Richard L.; Onal, Hayri. |
| An integrated watershed management framework that combines detailed spatial biophysical attributes of land with a hydrologic model and an economic model is developed to study the cost-effective enrollment of land in the Conservation Reserve Enhancement Program (CREP). Compared with previous related studies that assumed exogenous sediment deposition coefficients related only to site specific characteristics, this research explicitly considers endogenous sediment deposition coefficients, that are determined by landuse decisions made by all land parcels in the run-off path, in determining land rental offers. The modeling framework is applied to one of the eligible watersheds, Court Creek, in Illinois. We find that the optimal targeting of land enrollment is... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use; Resource /Energy Economics and Policy. |
| Ano: 2000 |
URL: http://purl.umn.edu/21807 |
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| Chen, Xiaoguang; Huang, Haixiao; Khanna, Madhu; Onal, Hayri. |
| Biofuels have been promoted to achieve energy security and as a solution to mitigating climate change. This research presents a framework to examine the extent to which biofuel mandates and subsidies reduce gasoline consumption and their implications for the food and fuel prices. A dynamic, multi-market equilibrium model, Biofuel and Environmental Policy Analysis Model (BEPAM), is used to estimate the effects of these policies on cropland usage between food crops and fuel crops and food and fuel prices, and to analyze the incentives provided by alternative policies for the mix of biofuels from corn and various cellulosic feedstocks that are economically viable over the 2007-2022 period. The provision of biofuel subsidies that accompany the mandate under... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use; Resource /Energy Economics and Policy. |
| Ano: 2010 |
URL: http://purl.umn.edu/61629 |
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| Tursun, Umit Deniz; Kang, Seungmo; Onal, Hayri; Ouyang, Yanfeng; Scheffran, Jurgen. |
| This article addresses development of the Illinois ethanol industry through the period 2007-2022, responding to the ethanol production mandates of the Renewable Fuel Standard by the U.S. Environmental Protection Agency. The planning for corn-based and cellulosic ethanol production requires integrated decisions on transportation, plant location, and capacity. The objective is to minimize the total system costs for transportation and processing of biomass, transportation of ethanol from refineries to the blending terminals and demand destinations, capital investment in refineries, and by-product credits. A multi-year transshipment and facility location model is presented to determine the optimal size and time to build each plant in the system, the amount of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agribusiness. |
| Ano: 2008 |
URL: http://purl.umn.edu/53502 |
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| Liao, Chao-Ning; Onal, Hayri. |
| This research presents a price endogenous mathematical programming model that incorporates the independent, optimizing behavior of individual participants to estimate the possible efficiency loss of a newly developed permit trading market for nitrogen oxides (NOx) control in southern Taiwan. The result shows that when control equipment decisions are indivisible, an efficiency loss may arise due to over-investment. The efficiency loss found here is not because of a bilateral trading process and/or insufficient information for finding trading partners, but it is due to not having full control ability of the installed equipment. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19447 |
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| Khanna, Madhu; Yang, Wanhong; Farnsworth, Richard L.; Onal, Hayri. |
| This paper extends an integrated framework that combines economic, environmental and GIS modeling to evaluate the cost effectiveness of land retirement programs. The modeling framework is applied to the Lower Sangamon Watershed in Cass County of Illinois to examine the economic costs and environmental benefits of three land retirement scenarios: land actually enrolled in the Illinois CREP, land selected by a land rental cap mechanism and land identified by a least cost model. We find that land retirement in the watershed successfully achieved the program goal of 20% sediment abatement. However, in achieving the same level of sediment abatement, the costs of actual land retirement are 1.3 times and 2.1 times of those in a land rental cap mechanism and a... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use. |
| Ano: 2002 |
URL: http://purl.umn.edu/19740 |
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| Registros recuperados: 19 | |
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