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Spatially-explicit scenarios on global cropland expansion and available forest land in an integrated modelling framework AgEcon
Krause, Michael; Lotze-Campen, Hermann; Popp, Alexander.
The pressure on land as required input in competing uses fuelled research on trade-offs in land use due to agricultural land expansion to meet food demand which is explicitly and implicitly treated in global land use modelling. Global land use studies rely on assessing the trade-offs by assuming policy, environmental, and economic constraints on the availability of land but do not base on consistent land use budgets. Commonly, they lack the focus on a holistic view on land use which employs different categories including trade-offs without mixing land use with land cover categories. We pursue a spatially-explicit land use budgeting approach in global available land assessment to overcome overlaps in classification. Objectives pertain to (a) identifying...
Tipo: Conference Paper or Presentation Palavras-chave: Cropland expansion; Available land; Historical land conversion; Spatially-explicit modelling; Non-linear optimization; Intact & frontier forest; Agricultural and Food Policy; Environmental Economics and Policy; International Development; Land Economics/Use.
Ano: 2009 URL: http://purl.umn.edu/51751
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How much can be gained by optimizing nutrient abetment spatially – Cost – efficiency comparison of non – point arable loads from different Finnish watersheds AgEcon
Helin, Janne; Tattari, Sirkka.
Targeting has become the buzz word in the national agri-environmental policy reform in Finland. It is generally accepted that more environmental benefits could be reaped by implementing environmental protection measures where they have the biggest positive impact. However, considering one of the main environmental problems in Finland resulting from agriculture, eutrophication, the identification of first-best policy or even the biggest contributors among the diffuse nutrient sources remains as a considerable challenge. The model developed in this study aims to demonstrate how the agricultural nutrient load potential can be calculated in a way which supports the identifying of cost-efficient abatement policies. We use metamodeling of dynamic nutrient load...
Tipo: Conference Paper or Presentation Palavras-chave: Nutrient abatement; Nitrogen; Phosphorus; Non-linear optimization; GIS; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Land Economics/Use; Productivity Analysis.
Ano: 2010 URL: http://purl.umn.edu/109381
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SOCIAL WELFARE AND ENVIRONMENTAL DEGRADATION IN AGRICULTURE: THE CASE OF ECUADOR AgEcon
Segarra, Eduardo; Torre Ugarte, Daniel de la; Malaga, Jaime E.; Williams, Gary W..
A non-linear optimization model which maximizes total Ecuadorian social welfare, defined as the sum of consumers' and producers' surpluses for the four major crops (corn, bananas, rice and African palm) is developed to evaluate the tradeoff between welfare and environmental degradation in Ecuador. It was found that a total welfare loss of US$122 million (a 11 percent reduction - from US$ 1.112 billion to US$ 989.66 million) would be expected from a 30 percent reduction in the total pesticide load on the environment in the production of the four major crops. The distributional impacts of the welfare loss were found, however, to be significantly skewed toward the loss of consumers' surplus. Specifically, a 30 percent reduction of total pesticide load on...
Tipo: Conference Paper or Presentation Palavras-chave: Welfare tradeoff; Environmental impacts; Non-linear optimization; Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/25822
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