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Recursos bibliográficos en papel y digitales -
- libros, artículos de revistas,
ponencias de eventos, etc. -
» Resultado:
5 registros
| Registro 1 de 5 |
| Autor: |
Torres, Marcelo de O. - Maneta, Marco - Howitt, Richard - Vosti, Stephen A. - Wallender, Wesley W. - Bassoi, Luís H. - Rodrigues, Lineu N. |
| Título: |
Economic impacts of regional water scarcity in the São Francisco River Basin, Brazil: an application of a linked hydro-economic model |
| Fuente: |
Environment and Development Economics. v.17, n.2. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 227-248 |
| Año: |
Apr. 2012 |
| Resumen: |
This paper presents a linked hydro-economic model and uses it to examine the regional effects of water use regulations and product price changes on the agriculture of the São Francisco River Basin, Brazil. The effects of weather on surface water availability are explicitly addressed using the hydrological model MIKE-Basin. Farmers’ adjustments to changes in precipitation, surface water availability, and other factors are quantified using an economic model based on non-linear programming techniques. The models are externally linked. Results show that regional impacts, at the sub-basin level, vary depending on the location of each sub-basin relative to river flows. The effects of water use regulations and of exogenous price shocks on agriculture depend on weather, location, product mix and production technology. Implications of these results for policies designed to manage agriculture and water use are discussed. |
| Solicitar por: |
HEMEROTECA E + datos de Fuente |
| Registro 2 de 5 |
| Autor: |
Huang, Qiuqiong - Rozelle, Scott - Howitt, Richard - Wang, Jinxia - Huang, Jikun - |
| Título: |
Irrigation water demand and implications for water pricing policy in rural China |
| Fuente: |
Environment and Development Economics. v.15, n.3. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 293-319 |
| Año: |
June 2010 |
| Resumen: |
The goal of this paper is to analyze whether reforming groundwater pricing has the potential to encourage water conservation and assess its impacts on crop production and producer income in rural China. Household-level water demands are estimated so that adjustments at both the intensive and extensive margins are captured. The results show that a large gap exists between the cost of water and the value of water to producers. Simulation analysis shows that reforming water pricing can induce water savings. However, the price of water needs to be raised to a relatively high level. We also find that the value-based policy is more effective than the cost-based policy since it generates larger water savings, given the same increase in the average price of water. While raising the price of water negatively affects crop production and crop income, higher water prices do not adversely affect the distribution of household income |
| Palabras clave: |
AGUA |
DEMANDA |
RIEGO |
PRECIOS |
ZONAS RURALES |
DISTRIBUCION DEL INGRESO |
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| Solicitar por: |
HEMEROTECA E + datos de Fuente |
| Registro 3 de 5 |
| Autor: |
Paris, Quirino - Howitt, Richard-E - |
| Título: |
An Analysis of Ill-Posed Production Problems Using Maximum Entropy |
| Fuente: |
American Journal of Agricultural Economics. v.80, n.1. American Agricultural Economics Association |
| Páginas: |
pp. 124-38 |
| Año: |
Feb. 1998 |
| Resumen: |
Production economics problems are often ill-posed. This means that the number of parameters to be estimated is greater than the number of observations. In this article, the authors show how to recover flexible cost functions from very limited data sets using a maximum entropy approach. They also argue that there exists a continuum of analysis between mathematical programming and traditional econometric techniques which is based solely upon the available information. The limiting case of a multioutput cost function recovered using only a single observation of a farmer’s allocation decisions can be easily extended to handle more than one observation. |
| Solicitar por: |
HEMEROTECA A + datos de Fuente |
| Registro 4 de 5 |
| Autor: |
Lee, Donna-J - Howitt, Richard-E - |
| Título: |
Modeling Regional Agricultural Production and Salinity Control Alternatives for Water Quality Policy Analysis |
| Fuente: |
American Journal of Agricultural Economics. v.78, n.1. American Agricultural Economics Association |
| Páginas: |
pp. 41-53 |
| Año: |
Feb. 1996 |
| Resumen: |
Water development and allocation to competing uses without well-defined water quality rights contribute to water use externalities. Federal legislation to address the salinity externalities in the Colorado River basin comprises a set of arbitrary quality standards and millions of dollars in federal projects. This study specifies economic criteria to empirically determine first- and second-best quality standards and to indicate opportunities for efficiency gains in existing policy. A basinwide, nonlinear programming model optimizes river water quality, resource allocation, production levels, and total expenditures for control. Revealed are the economic trade-offs between water uses, regions, and control strategies. |
| Solicitar por: |
HEMEROTECA A + datos de Fuente |
| Registro 5 de 5 |
| Autor: |
Howitt, Richard-E - |
| Título: |
A Calibration Method for Agricultural Economic Production Models |
| Fuente: |
Journal of Agricultural Economics. v.46, n.2. Agricultural Economics Society |
| Páginas: |
pp. 147-59 |
| Año: |
May 1995 |
| Resumen: |
A method for calibrating agricultural production models is presented. The data requirements are those for a linear programming model with the addition of elasticities of substitution. Using these data, production models with a CES production function can be simply and automatically calibrated using small computers. The resulting models are shown to satisfy the standard macroeconomic conditions. When used for analysis of policy changes, the CES models are able to respond smoothly to changes in prices or constraints. Prior estimates of elasticities of substitution, supply or demand can be incorporated in the models. |
| Solicitar por: |
HEMEROTECA J + datos de Fuente |
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