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Assessing Water Policies and Farmers’ Vulnerability in Groundwater Irrigation Systems AgEcon
Varela-Ortega, Consuelo; Esteve, Paloma; Downing, Thomas E.; Bharwani, Sukaina.
Spain is the most arid country in Europe and water use as well as water depletion and environmental degradation have slowly become a matter of social concern. Balancing the two objectives of “water for rural livelihoods” and “water for nature” constitutes a difficult challenge for the water Administration. The aim of this paper is to analyze the impact of water conservation policies in the Upper Guadiana River basin (Spain), where intensive irrigated agriculture resulted in the overexploitation of the Western La Mancha aquifer and the subsequent degradation of the highly valuable wetlands. Focus is made on farmers’ vulnerability to these policies. The methodology combines qualitative and quantitative aspects by the integration of an economic model and a...
Tipo: Conference Paper or Presentation Palavras-chave: Water policies; Economic model; Vulnerability assessment; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/51687
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Introducing deficit irrigation crop techniques derived by crop growth models into a Positive Mathematical Programming model AgEcon
Severini, Simone; Cortignani, Raffaele.
There is a growing policy pressure to reduce water use in agriculture when this generates sufficiently large environmental benefits and increases the well-being of other water users. Several analysis investigate farmers’ response to water policy by means of mathematical programming models including Positive Mathematical Programming (PMP). The originals PMP methods refer only to activities observed in the reference period. However, under the pressure of new water policies, farmers can adjust not only their cropping patterns but also the irrigation techniques they use. In particular, they could introduce water deficit irrigation crop techniques that were not profitable in past conditions. This paper proposes an extension of the Röhm and Dabbert approach...
Tipo: Conference Paper or Presentation Palavras-chave: Positive mathematical programming; Water policies; Deficit irrigation; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/44010
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Dealing with the tradeoff between water for nature and water for rural livelihoods in the presence of climate uncertainties: lessons for water management AgEcon
Varela-Ortega, Consuelo; Blanco-Gutierrez, Irene; Swartz, Christopher H.; Downing, Thomas E..
In arid countries worldwide, social conflicts between irrigation-based human development and the conservation of aquatic ecosystems are widespread and attract many public debates. This research focuses on the analysis of water and agricultural policies aimed to conserve groundwater resources and to maintain rural livelihoods in a basin in Spain’s central arid region. Intensive groundwater mining has caused overexploitation of the basin’s large aquifer and the degradation of internationally reputed wetlands. This has caused notable social conflicts over the years but the policies implemented have not been able to solve them so far. The methodology consists in the integration of a farm-based economic model and a basin-based hydrology model to analyze the...
Tipo: Conference Paper or Presentation Palavras-chave: Water policies; Irrigation agriculture; Hydro-economic modeling.; Agricultural and Food Policy; Environmental Economics and Policy; Land Economics/Use; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2009 URL: http://purl.umn.edu/51420
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Investment in Irrigation Systems under Weather Uncertainty AgEcon
Heumesser, Christine; Fuss, Sabine; Szolgayova, Jana; Strauss, Franziska; Schmid, Erwin.
Irrigated agriculture will play a crucial role to meet future food demand, but a sustainable water resource management in agriculture is crucial as well. Therefore, the European Water Framework Directive promotes several measures, e.g., the adoption of adequate water pricing mechanisms or the promotion of water-saving irrigation techniques. Since production conditions such as weather and climate development are uncertain, farmers might be reluctant to invest in a water-saving but capital intensive irrigation system. We apply a stochastic dynamic programming approach to analyze a farmer’s optimal investment strategy for either a water–saving drip irrigation system or sprinkler irrigation system under weather uncertainty and assess the probability of...
Tipo: Conference Paper or Presentation Palavras-chave: Irrigation investment; Stochastic dynamic programming approach; Water policies; Weather uncertainty; EPIC; Farm Management; Risk and Uncertainty.
Ano: 2011 URL: http://purl.umn.edu/114536
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Real and ideal water rights: the prospects for water-rights reform in Israel, Gaza, and the West Bank AgEcon
Berck, Peter; Lipow, Jonathan.
The ideal water contract for a heterogeneous population of users is a prioritized right that is fully vested and fully tradable. A set of tradable, prioritized rights contracts will span the same space as the Debreu contingent commodities. Therefore, they lead to a competitive equilibrium that is Pareto optimal. Equal sharing of water shortfalls does not have this property. Existing water policies in Israel and the Disputed Territories are not characterized by an efficient set of water contracts. The system misallocates water over both time and space. Current policies are driven by strategic and ideological objectives. With peace, reform of water policies will become politically feasible. The paper concludes with a proposal for a new water-allocation...
Tipo: Working or Discussion Paper Palavras-chave: Water policies; Water supply; Agriculture; Water rights.
Ano: 1994 URL: http://purl.umn.edu/43743
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Cost-Effectiveness of Water Conservation Measures: A Multi-level Analysis with Policy Implications AgEcon
Blanco-Gutierrez, Irene; Varela-Ortega, Consuelo; Flichman, Guillermo.
Groundwater in Spain, as in other arid or semiarid countries worldwide, has been intensely used for the expansion of irrigated agriculture. This booming development has induced a remarkable socioeconomic development in many rural areas but has produced far-reaching environmental problems. In the Spanish Western La Mancha Aquifer, the excessive, and sometimes illegal, water abstraction for irrigation agriculture has resulted in the Aquifer’s overexploitation and has been responsible of the degradation of the associated wetlands “Tablas de Daimiel”, an internationally reputed, Ramsarnominated aquatic ecosystem. To undertake this analysis, a mathematical programming model has been developed to simulate farmers’ behaviour and their responses to different water...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental degradation; Water policies; Cost-effectiveness analysis; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/43846
Registros recuperados: 6
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