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Dynamic trade-offs in water use between irrigation and reservoir aquaculture in Vietnam AgEcon
Tran, Lap Doc; Schilizzi, Steven; Kingwell, Ross S..
Conflicts of interest between irrigation and aquaculture in water use from reservoirs in Vietnam can be resolved when trade-offs in the economic value of water can be quantified over time. Determining these trade-offs can be used as a benchmark for making decisions about managing reservoirs tending to develop rural areas in Vietnam. To solve this problem, a stochastic dynamic programming model was constructed. This model maximizes the expected net present values generated by both agriculture and aquaculture by finding the optimal release paths throughout a year, under conditions of uncertain rainfall. The model was constructed using two main components. First, a dated water production function is used to evaluate responses of crop yields for different...
Tipo: Conference Paper or Presentation Palavras-chave: Irrigation; Reservoir aquaculture; Stochastic dynamic programming; And dynamic trade-offs; Community/Rural/Urban Development.
Ano: 2010 URL: http://purl.umn.edu/59171
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Modelling the management of multiple-use reservoirs: Deterministic or stochastic dynamic programming? AgEcon
Tran, Lap Doc; Schilizzi, Steven; Chalak, Morteza; Kingwell, Ross S..
Modelling complex systems such as multiple-use reservoirs can be challenging. A legitimate question for scientists and modellers is how best to model their management under uncertain rainfall. This paper studies whether it is worth using a stochastic model that requires more effort than a much simpler deterministic model. Both models are applied to the management of a multiple-use reservoir in southern Vietnam. Although no single modelling approach is universally superior, this study indicates that the desirable modelling approach is stochastic if reservoir capacity and water use demands have a high enough impact on the optimal timing of reservoir water use.
Tipo: Presentation Palavras-chave: Deterministic dynamic proramming; Stochastic dynamic programming; Water management; Irrigation; Fisheries; Multiple-use reservoir; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2012 URL: http://purl.umn.edu/124463
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Managing multiple-use resources: optimizing reservoir water use for irrigation and fisheries AgEcon
Tran, Lap Doc; Schilizzi, Steven; Chalak, Morteza; Kingwell, Ross S..
Policy makers in Vietnam face difficult choices when deciding reservoir water management strategies between irrigation and fisheries. In this paper, an economic optimization model for water management is developed to facilitate policy makers' decision making. The model includes the response of rice and fish yields to key factors including reservoir water levels, the timing and quantity of water release, and climatic conditions. The model accounts for variation in rainfall patterns, irrigation requirements, and the demand for low water levels during the fish harvest season. The model is applied to the Daton reservoir in the south of Vietnam to maximize profits in each of three production scenarios where the reservoir's water is used for: (1) only producing...
Tipo: Conference Paper or Presentation Palavras-chave: Multiple-use resources; Reservoir water management; Optimization; Irrigation; Fisheries; And stochastic; Production Economics.
Ano: 2011 URL: http://purl.umn.edu/100721
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