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Households’ welfare analyses of the impact of global change on water resources in South Africa AgEcon
Juana, James S.; Strzepek, Kenneth M.; Kirsten, Johann F..
Most of the climate change models for South Africa predict a reduction in freshwater availability by 2050. Population growth is projected at 3% per annum, implying increased domestic water use. In addition to these factors, the concern for ecological sustainability and increased water pollution due to increased industrial, mining and agricultural activities, water availability for sectoral production activities is expected to decline. This decline has an impact on sectoral output, value added and households’ welfare. Using a computable general equilibrium approach, this study investigates the possible impact of global change on households’ welfare. The simulation results show that water scarcity due to global change can potentially lead to a general...
Tipo: Journal Article Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/44026
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Impacts of considering climate variability on investment decisions in Ethiopia AgEcon
Block, Paul J.; Strzepek, Kenneth M.; Rosegrant, Mark W.; Diao, Xinshen.
Extreme interannual variability of precipitation within Ethiopia is not uncommon, inducing droughts or floods and often creating serious repercussions on agricultural and non-agricultural commodities. An agro-economic model, including mean climate variables, was developed to assess irrigation and road construction investment strategies in comparison to a baseline scenario over a 12-year time horizon. The motivation for this work is to evaluate whether the inclusion of climate variability in the model has a significant effect on prospective investment strategies and the resulting country-wide economy. The mean climate model is transformed into a variable climate model by dynamically adding yearly climate-yield factors, which influence agricultural...
Tipo: Report Palavras-chave: Climate variability; Climate change; Water; Droughts; Flooding; Irrigation; Economic aspects; Road construction; Investments; Economic situation; Agro-economic model; Food and water security; Environmental Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/55419
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Inter-sectoral Water Use in South Africa: Efficiency Versus Equity AgEcon
Juana, James S.; Kirsten, Johann F.; Strzepek, Kenneth M..
While water supply sources are dwindling in South Africa, the demand for the scarce water resource is increasing. This situation requires a switch from supply to demand management of water in the country. The study updates the 1999 social accounting matrix for South Africa, using the Trade and Industrial Policy Strategies (TIPS) time series data, STATSA's 2001 census report and 2000 water accounts, the 2002 national income accounts, published by the South African Reserve Bank (SARB) and the Water Resource Management Strategy (WRMS) registration data. Using the updated SAM, the contribution of water to economic development in South Africa is estimated through the traditional SAM multiplier analysis. The paper then investigates the impact of reallocating...
Tipo: Conference Paper or Presentation Palavras-chave: SAM multipliers; Output growth; Factor remuneration; Income generation; Efficiency; Equity; R20; Resource /Energy Economics and Policy; C67; D57; L60; Q25.
Ano: 2006 URL: http://purl.umn.edu/25486
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Marginal Productivity Analysis of Global Inter-sectoral Water Demand AgEcon
Strzepek, Kenneth M.; Juana, James S.; Kirsten, Johann F..
There is growing evidence that freshwater availability is declining, while competition among sectors for the withdrawal of this scarce resource is rapidly increasing,(Rosegrant et a, 2002). Therefore, the need to promote inter-sectoral water use efficiency from the demand-side management has necessitated a study to investigate the responsiveness of different productive sectors and sub-sectors to water prices. Extracting data from the GTAP and UNIDO databases and adopting the marginal productive approach by Wang and Lall (2002),and using the two-stage-least squares method, the translog production function is estimated, from which the output and price elasticities and the marginal value of water is computed for thirteen sectors. The results indicate that...
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy; C21; C8; L6; L7; Q25.
Ano: 2006 URL: http://purl.umn.edu/25748
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THE SOCIO-ECONOMIC CONSEQUENCES OF THE IMPACT OF CLIMATE CHANGE ON WATER RESOURCES IN SOUTH AFRICA AgEcon
Juana, James S.; Strzepek, Kenneth M.; Kirsten, Johann F..
Most of the climate change models for South Africa predict a reduction in freshwater availability by 2050, which implies that water availability for sectoral production activities is expected to decline. This decline has an impact on sectoral output, value added and households’ welfare. Using a computable general equilibrium approach, this study investigates the possible impact of global change on households’ welfare. The simulation results show that water scarcity due to global change can potentially lead to a general deterioration in households’ welfare. The poor households, whose incomes are adversely impacted, are the most vulnerable to the consequences of the impact of global change on water resources in South Africa. This vulnerability can only be...
Tipo: Conference Paper or Presentation Palavras-chave: Climate Change; Water Resources; Sectoral Output; Value Added; Households' Welfare; Computable General Equilibrium; Agricultural and Food Policy; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Productivity Analysis.
Ano: 2009 URL: http://purl.umn.edu/51927
Registros recuperados: 5
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