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Aggregation and Calibration of Agricultural Sector Models Through Crop Mix Restrictions and Marginal Profit Adjustments AgEcon
Wiborg, Torben; McCarl, Bruce A.; Rasmussen, Svend; Schneider, Uwe A..
All agricultural sector models must deal with aggregation and calibration somehow. The aggregation problem involves treating a group of producers as if they all responded in the same way as a single representative unit. The calibration problem concerns making a model reproduce as closely as possible an empirically observed set of decision maker actions. This paper shows how both calibration and aggregation are addressed through crop mix restrictions combined with marginal profit adjust-ments.
Tipo: Conference Paper or Presentation Palavras-chave: Mathematical programming; Aggregation; Calibration; Crop mix; Marginal cost; Agricultural sector model; Agribusiness; C6; C61; Q1; Q11; Q17; Q18; R12; R13; R14.
Ano: 2005 URL: http://purl.umn.edu/24567
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Deutschland – Energie-Corn-Belt Europas? AgEcon
Gomann, Horst; Kreins, Peter; Breuer, Thomas.
The amendment of the Renewable Energy Sources Act (EEG) in 2004 has established an attractive support of using renewable resources for energy production, which since then has fuelled a rapid expansion of the competitive cropping of energy maize. The regionalised agricultural sector model RAUMIS was applied to calculate expected energy maize production as well as impacts on agricultural land use, production and income. Accordingly, the energy maize acreage rises up to about 1.8 mill hectares in the long run leading to substantial land use changes. The produced energy maize for biogas and power generation respectively is sufficient to provide circa 9% of the current German total electricity generation. In regard to the costs for the current consumer which...
Tipo: Journal Article Palavras-chave: Renewable Energy Sources Act; Biomass; Energy maize; Agricultural sector model; Land-use; Resource /Energy Economics and Policy; Land Economics/Use.
Ano: 2007 URL: http://purl.umn.edu/96751
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Koppelung agrarökonomischer und hydrologischer Modelle AgEcon
Gomann, Horst; Kreins, Peter; Kunkel, Ralf; Wendland, Frank.
The objective of the paper is to show the potential of interdisciplinary model networks consisting of agricultural economic and natural science models performing integrated impact assessments of agri-environmental policies. The potentials are exemplified using a coupling of the agricultural sector model RAUMIS with the hydrological models GROWA98 and WEKU in the scope of diffuse agricultural nitrogen immission into waterbodies. A brief classification of applied indicators is given. A key element for policy impact analyses are the relationships between the environmental indicator categories Driving Force, State and Response. The major relationships within this environmental scope as well as the modeling are explained. The presented model network represents...
Tipo: Journal Article Palavras-chave: Model-based policy consulting; Interdisciplinary model networks; Agricultural sector model; Diffuse agricultural nitrogen immissions; Agricultural and Food Policy; Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/98360
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Marktintegration ohne Gemeinsame Agrarpolitik: Auswirkungen einer Einbeziehung von Agrarprodukten in die Zollunion mit der EU auf den türkischen Agrarsektor AgEcon
Grethe, Harald.
Turkey entered a customs union (CU) with the EU in January 1996. Agricultural trade is not covered by this CU but it is subject to extensive preferential trade rules. In this article, the effects of an inclusion of agricultural products in the CU as well as alternative policy options on the Turkish agricultural sector are analysed. To this aim, a comparative-static, partial equilibrium model of the Turkish agricultural sector is developed. The complete liberalization of the agricultural sector is found to lead to significant comparative static welfare gains of about €670 million as compared to the status quo. It appears that for most products, with few but significant exceptions, the inclusion of agriculture in the CU with the EU is very similar to the...
Tipo: Journal Article Palavras-chave: Turkey; Customs union; Integration of agricultural markets; CAP; Agricultural sector model; Agricultural and Food Policy; International Relations/Trade.
Ano: 2004 URL: http://purl.umn.edu/97455
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Modellgestützte Abschätzung der regionalen landwirtschaftlichen Landnutzung und Produktion in Deutschland vor dem Hintergrund der „Gesundheitsüberprüfung“ der GAP AgEcon
Kreins, Peter; Gomann, Horst.
The framework conditions surrounding agricultural production in Germany have changed dramatically due to the Renewable Energy Law (EEG) and a sustained increase in agricultural prices. The Common Agricultural Policy, substantially reformed in the Luxemburg Compromise, will be considered in the framework of the “Health Check”. Against this background, the regional developments anticipated in dairy production, beef cattle husbandry and agricultural land use by the year 2015 are analysed with the help of the regionalized agricultural sector model RAUMIS. Simulations on the adaptability of dairy production under different market conditions are carried out with regard to the expiration of the dairy quota regulation. The farming intensity on arable land is...
Tipo: Journal Article Palavras-chave: Common Agricultural Policy; Milk market reform; Bio-masse; Agricultural sector model; Land use; Agricultural and Food Policy; Land Economics/Use.
Ano: 2008 URL: http://purl.umn.edu/97592
Registros recuperados: 5
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