|
|
|
| Registros recuperados: 96 | |
|
|
| Chapoto, Antony; Haggblade, Steven; Shawa, Julius J.; Jayne, Thomas S.; Weber, Michael T.. |
| 1) Maize prices are rising rapidly in 2008 and are fast approaching import parity levels. 2) Maize traders, millers and farmers all agree that Zambia will likely require imports by early 2009 in order to avoid domestic maize supply shortages. 3) Official food balance sheets appear to have underestimated the demand for maize this year. They may also have slightly overestimated the size of the 2007/08 maize crop. Hence the slow government recognition of the need for maize imports. 4) As of late September 2008, neither the Government of Zambia (GRZ) nor the private sector have arranged to import maize from South Africa. Trade sources suggest informal imports from Tanzania are helping to relieve the likely shortfall. 5) Zambian policy makers face a delicate... |
| Tipo: Report |
Palavras-chave: Food security; Food policy; Zambia; Maize; Marketing; Crop Production/Industries; Q20. |
| Ano: 2008 |
URL: http://purl.umn.edu/54638 |
| |
|
| |
|
|
| Smith, V. Kerry; van Houtven, George; Pattanayak, Subhrendu K.. |
| This paper proposes and illustrates the use of a new approach to benefit transfer for the non-market valuation of environmental resources. It treats transfer as an identification problem that requires assessing whether available benefit estimates permit the parameters of a preference function to be identified. The transfer method proposed uses these identifying restrictions to calibrate preference parameters and bases the benefit estimates on that preference function. The approach is illustrated using travel cost, hedonic and contingent valuation estimates, as well as combinations of estimates. It has three potential advantages over conventional practice: (1) it allows multiple, potentially overlapping estimates of the benefits of an improvement in... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Benefit transfer; Calibration; Non-market valuation; Environmental Economics and Policy; D61; Q20; H40. |
| Ano: 1999 |
URL: http://purl.umn.edu/10607 |
| |
|
|
| Almudi, Isabel; Choliz, Julio Sanchez. |
| En este trabajo presentamos un modelo en el que las actividades extractivas referidas a un recurso natural renovable, si son abusivas, generan algún tipo de reacción social que modifica las preferencias sociales. Esta modificación es tenida en cuenta por el planificador a la hora de decidir cual es la asignación intertemporal óptima entre consumo y stock del recurso. Bajo estas nuevas condiciones, nos preguntamos cómo cambia el stock del recurso natural en el estado estacionario y qué puede decirse acerca de la posibilidad de sobreexplotación en comparación con los modelos tradicionales en los que no se considera reacción social. Los resultados obtenidos muestran que bajo estas nuevas condiciones el stock del estado estacionario aumenta y el comportamiento... |
| Tipo: Journal Article |
Palavras-chave: Renewable Resources; Sustainability; Environmental Information; Overuse; Resource /Energy Economics and Policy; Q50; Q20; C61. |
| Ano: 2006 |
URL: http://purl.umn.edu/8003 |
| |
|
|
| Newell, Richard G.; Jaffe, Adam B.; Stavins, Robert N.. |
| We develop a methodology for testing Hick's induced innovation hypothesis by estimating a product-characteristics model of energy-using consumer durables, augmenting the hypothesis to allow for the influence of government regulations. For the products we explored, the evidence suggests: (i) the rate of overall innovation was independent of energy prices and regulations, (ii) the direction of innovation was responsive to energy price changes for some products but not for others, (iii) energy price changes induced changes in the subset of technically feasible models that were offered for sale, (iv) this responsiveness increased substantially during the period after energy-efficiency product labeling was required, and (v) nonetheless, a sizeable portion of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Induced innovation; Energy efficiency; Technological change; Economic incentives; Regulation; Standards; Climate change; Resource /Energy Economics and Policy; L51; O31; O38; Q40; Q20; Q48. |
| Ano: 1998 |
URL: http://purl.umn.edu/10521 |
| |
|
|
| Pezzey, John C.V.; Toman, Michael. |
| Concern about sustainability helped to launch a new agenda for development and environmental economics and challenged many of the fundamental goals and assumptions of the conventional, neoclassical economics of growth and development. We review 25 years' of refereed journal articles on the economics of sustainability, with emphasis on analyses that involve concern for intergenerational equity in the long-term decision-making of a society; recognition of the role of finite environmental resources in long-term decision-making; and recognizable, if perhaps unconventional, use of economic concepts, such as instantaneous utility, cost, or intertemporal welfare. Taken as a whole, the articles reviewed here indicate that several areas must be addressed in future... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Economic efficiency; Intergenerational equity; Social optimality; Sustainable development; Environmental Economics and Policy; Q20; D60; D90. |
| Ano: 2002 |
URL: http://purl.umn.edu/10683 |
| |
|
|
| Tschirley, David L.; Kabwe, Stephen. |
| 1. Changes in spinning technology have increased the premium on high quality lint in the world market and increased the discount for lint contaminated with non-vegetative matter 2. The inherent characteristics of most African lint, plus the fact that it is hand-picked, should give it a substantial premium in the world market. However, because so much African lint is highly contaminated by world standards, much of it trades at a discount to Index A. 3. Zambia has been the outstanding success among a sample of nine SSA countries in improving quality; this achievement is directly attributable to the efforts of Dunavant and Cargill, made possible by company culture and by the concentrated structure of Zambia's industry 4. Quality (and input supply) can be... |
| Tipo: Report |
Palavras-chave: Food security; Food policy; Zambia; Cotton; Crop Production/Industries; Q20. |
| Ano: 2007 |
URL: http://purl.umn.edu/54632 |
| |
|
|
| Walls, Margaret; MacAuley, Molly K.; Anderson, Soren T.. |
| We study determinants of market organization of local public services by an empirical examination of one of the most visible municipal services, residential waste management. Using a multinomial logit model and data for 1,000 U.S. communities, we explore the effect of political influence, voter ideology, environmental constraints, production costs (i.e., "economies of density"), and contracting transaction costs on a community's choice of market arrangement for waste collection and recycling. We find that cost factors are a significant determinant of service delivery method. In contrast, few of the political variables are statistically significant. These results hold for our models of both waste and recycling, lending further evidence to the conclusion... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Market organization; Solid waste management; State and local government; Environmental Economics and Policy; Q20; H70. |
| Ano: 2003 |
URL: http://purl.umn.edu/10892 |
| |
|
|
| Chapoto, Antony; Jayne, Thomas S.; Mason, Nicole M.. |
| 1. The percentage of households that are headed by widows in rural Zambia increased from 9.4 % to 12.3% between 2001 and 2004. 2. Within 1 to 3 years after the death of their husbands, widow-headed households, on average, controlled 35 percent less land than what they had prior to their husband’s death. 3. To some extent, older widows are protected against loss of land compared to younger widows. 4. Women in relatively wealthy households are particularly vulnerable to losing land after the death of their husbands. 5. Widows whose family has kinship ties to the village authorities are less likely to face a severe decline in landholding size after the death of their husbands. 6. Widows in patrilineal and matrilineal villages are equally likely to lose their... |
| Tipo: Report |
Palavras-chave: Food security; Food policy; Zambia; HIV/AIDS; Land; Health Economics and Policy; Land Economics/Use; Q20. |
| Ano: 2007 |
URL: http://purl.umn.edu/54628 |
| |
|
| |
|
|
| Culas, Richard J.; Mahendrarajah, Mahen. |
| Farm planning generally focuses on optimal diversification with respect to risk and uncertainties, where the risk-management strategies combine production, marketing, financial and environmental responses of the production of farm firm. In this study an empirical examination of farm diversification has been carried out from a sample of farms in Eastern Norway in which four measures of diversification (indices) were defined to incorporate the risk and uncertainties in relation to farm production (total) income. Using these four alternative measures of diversification and panel-data techniques, it has been shown that larger farms are more diversified, and when there is productive location and access to labour the farmers have a greater incentive to spread... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farm diversification; Risk and uncertainty; Environmental management; Panel data; Agribusiness; C23; Q12; Q20. |
| Ano: 2005 |
URL: http://purl.umn.edu/24647 |
| |
|
| |
|
| |
|
| |
|
|
| Bergeron, Nancy; Sedjo, Roger A.. |
| El Nino events are likely to affect maple syrup production since it is very sensitive to weather patterns. A statistically significant direct correlation has not been found in our preliminary analysis, however. This may be because many other factors affect production and because weather anomalies also occur in non-El Nino years. Few defensive activities are available to maple syrup producers to alleviate the negative impacts of weather anomalies on their production. Hence, the value of El Nino-Southern Oscillation (ENSO) forecasts to them is likely to be low, even if a clear correlation between productivity and ENSO events was eventually found. Overall, small welfare impacts of El Nino weather events are expected from their impact on the maple syrup... |
| Tipo: Working or Discussion Paper |
Palavras-chave: El Nino; Forests; Maple syrup; Economic welfare effects; Dieback; Resource /Energy Economics and Policy; D61; Q10; Q20; Q23; N5. |
| Ano: 1999 |
URL: http://purl.umn.edu/10671 |
| |
|
| |
|
| |
|
|
| Kabwe, Stephen; Tschirley, David L.. |
| 1. Smallholder farmers in Africa require reliable access to purchased production inputs and credit to take advantage of export opportunities from production of cotton. 2. Unregulated and poorly coordinated markets for cotton, production inputs and credit have too often failed to deliver sustainable production finance to farmers for cotton production resulting in a variety of different approaches to these problems among African countries. 3. Among the countries studied, approaches have varied from State monopolies to private markets with several large firms managing to achieve temporary duopolies. 4. Zambia has been relatively successful in dealing with the input-credit needs of cotton farmers for periods of time but the system has been unsustainable,... |
| Tipo: Report |
Palavras-chave: Food security; Food policy; Zambia; Cotton; Crop Production/Industries; Q20. |
| Ano: 2007 |
URL: http://purl.umn.edu/54635 |
| |
|
|
| Barbier, Edward B.. |
| This paper investigates the relationships among land-use change, biological invasion, and interspecific competition in a tropical ecosystem by linking a behavioral model of land conversion by agriculture and an ecological model of interspecific competition between a native species and an exotic invader. The model is used to examine how relative farm prices and access to forest areas influence land clearing and thus the ability of the invasive species to eliminate the native species. Simulations show that only a 20% rise in relative prices and a 2.75% increase in forest access are necessary for this outcome to occur. |
| Tipo: Journal Article |
Palavras-chave: Biological invasion; Interspecific competition; Land clearing; Tropical ecosystem; Tropical forest; O13; Q20; Q24. |
| Ano: 2007 |
URL: http://purl.umn.edu/37275 |
| |
|
|
| Pannell, David J.; Roberts, Anna M.; Park, Geoff; Curatolo, April; Marsh, Sally P.; Alexander, Jennifer. |
| This is a pre-publication version of: Pannell, D.J., Roberts, A.M., Park, G., Alexander, J., Curatolo, A. and Marsh, S. (2012). Integrated assessment of public investment in land-use change to protect environmental assets in Australia, Land Use Policy 29(2): 377-387. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy; Q20; Q50. |
| Ano: 2011 |
URL: http://purl.umn.edu/102455 |
| |
| Registros recuperados: 96 | |
|
|
|
