The economic impact of more sustainable water use in agriculture: A computable general equilibrium analysis

Calzadilla, Alvaro; Rehdanz, Katrin; Tol, Richard S.J.

doi:10.1016/j.jhydrol.2009.12.012

Cited by 169 publications

(110 citation statements)

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“…Studies of water use using general equilibrium approaches are generally based on data for a single country or region assuming no effects for the rest of the world of the implemented policy (for an overview of this literature see [14,19]). All of these CGE studies have a limited geographical scope.…”

Section: The Gtap-w Model (Version 2)mentioning

confidence: 99%

“…All of these CGE studies have a limited geographical scope. Berrittella et al [20] and Calzadilla et al [14,15] are exceptions, using GTAP-W, a static multi-region world CGE model.…”

Section: The Gtap-w Model (Version 2)mentioning

confidence: 99%

“…The model is a further refinement of the GTAP model [21,22], and is based on the version modified by Burniaux and Truong [23,24] as well as on the previous GTAP-W model introduced by Berrittella et al [20]. For a more detailed description of the model see [14].…”

Section: The Gtap-w Model (Version 2)mentioning

confidence: 99%

“…First, we use the Version 2 of the GTAP-W model. See Calzadilla et al [14,15] for a detailed description of the model. Second, we base our analysis on future scenarios of climate change for two time periods (2020 and 2050) as described in Calzadilla et al [5].…”

Section: Introductionmentioning

confidence: 99%

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Trade Liberalization and Climate Change: A Computable General Equilibrium Analysis of the Impacts on Global Agriculture

Calzadilla

Rehdanz

Tol

2011

Water

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Based on predicted changes in the magnitude and distribution of global precipitation, temperature and river flow under the A1B and A2 scenarios of the Intergovernmental Panel on Climate Change Special Report on Emissions Scenarios (IPCC SRES), this study assesses the potential impacts of climate change and CO 2 fertilization on global agriculture, and its interactions with trade liberalization, as proposed for the Doha Development Round. The analysis uses the new version of the GTAP-W model, which distinguishes between rainfed and irrigated agriculture and implements water as an explicit factor of production for irrigated agriculture. Significant reductions in agricultural tariffs lead to modest changes in regional water use. Patterns are non-linear. On the regional level, water use may go up for partial liberalization, and down for more complete liberalization. This is because different crops respond differently to tariff reductions, and because trade OPEN ACCESSWater 2011, 3 527 and competition matter too. Moreover, trade liberalization tends to reduce water use in water scarce regions, and increase water use in water abundant regions, even though water markets do not exist in most countries. Considering impacts of climate change, the results show that global food production, welfare and GDP fall over time while food prices increase. Larger changes are observed under the SRES A2 scenario for the medium term (2020) and under the SRES A1B scenario for the long term (2050). Combining scenarios of future climate change with trade liberalization, countries are affected differently. However, the overall effect on welfare does not change much.

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Section: The Gtap-w Model (Version 2)mentioning

confidence: 99%

“…All of these CGE studies have a limited geographical scope. Berrittella et al [20] and Calzadilla et al [14,15] are exceptions, using GTAP-W, a static multi-region world CGE model.…”

Section: The Gtap-w Model (Version 2)mentioning

confidence: 99%

Section: The Gtap-w Model (Version 2)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Trade Liberalization and Climate Change: A Computable General Equilibrium Analysis of the Impacts on Global Agriculture

Calzadilla

Rehdanz

Tol

2011

Water

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“…Agriculture is the industrial activity that 2 has the major impact on aquatic ecosystems, due to the large volumes of water 3 consumed (70% of the world accessible freshwater [1]) and the high content of organic 4 substances (pesticides and fertilizers) which are dispersed in aqueous environments by 5 runoff or leaching. Many pollutants found in water ecosystems are recalcitrant to some 6 degree to biological and physicochemical processes that are conventionally used in 7 wastewater treatment plants.…”

Section: Introductionmentioning

confidence: 99%

Boron doped TiO2 catalysts for photocatalytic ozonation of aqueous mixtures of common pesticides: Diuron, o-phenylphenol, MCPA and terbuthylazine

Quiñones

Rey

Álvarez

et al. 2015

Applied Catalysis B: Environmental

120

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Additional Information:• This paper was accepted for publication in the journal Applied Cataly- TiO 2 and B-doped TiO 2 catalysts were synthesized using a sol-gel procedure. The 11 photocatalysts were characterized by ICP-EOS, N 2 adsorption-desorption, XRD, XPS, 12and DR-UV-Vis spectroscopy. Four recalcitrant pesticides (diuron, o-phenylphenol, 2-13 methyl-4-chlorophenoxyacetic acid (MCPA) and terbuthylazine) were subjected to 14 degradation by ozonation, photolytic ozonation, photocatalysis and photocatalytic 15 ozonation using the prepared catalysts under simulated solar irradiation in a laboratory 16 scale system. The B-doped TiO 2 catalysts, with 0.5-0.8 wt.% of interstitial boron, were 17 more active than bare TiO 2 for the removal and mineralization of the target compounds. 18The combination of ozonation and photocatalysis led to faster mineralization rates than 19 the treatment methods considered individually and allowed the complete removal of the 20 pesticides below the regulatory standards. The B-doped catalyst was stable and 21 maintained 75% mineralization after three consecutive runs.

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Technological change in irrigated agriculture in a semiarid region of Spain

Philip

Chóliz

Sarasa

2014

Water Resources Research

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Technological change plays a decisive role in irrigated agriculture, which is particularly challenging in semiarid regions. The main objective of this paper is to assess four kinds of alternative technological improvements aimed at dealing with future water availability, especially in the case of extreme events like drought. We evaluate these technologies for a better understanding of what form should be applied in irrigated agriculture in a context of limits on natural resources. We develop a dynamic computable general equilibrium (CGE) model, whose production structure distinguishes between rainfed and irrigated crops, and between a variety of irrigated crops. Land use changes are also evaluated. As well as technological change, we consider the Water Framework Directive (EC 2000/60), which establishes water cost recovery as a key goal. Thus, we assess strategies that combine irrigation water pricing strategies and improved technology. Our results show that policy strategies that focus on fostering technical progress can mitigate the longterm economic effects of downward trends in water supplies, even in drought years. The study also confirms that the absence of price volatility achieved through a water pricing strategy could improve the sustainable use of water.

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The economic impact of more sustainable water use in agriculture: A computable general equilibrium analysis

Cited by 169 publications

References 9 publications

Trade Liberalization and Climate Change: A Computable General Equilibrium Analysis of the Impacts on Global Agriculture

Trade Liberalization and Climate Change: A Computable General Equilibrium Analysis of the Impacts on Global Agriculture

Boron doped TiO2 catalysts for photocatalytic ozonation of aqueous mixtures of common pesticides: Diuron, o-phenylphenol, MCPA and terbuthylazine

Technological change in irrigated agriculture in a semiarid region of Spain

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