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| Registros recuperados: 12 | |
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| Kan, Iddo; Schwabe, Kurt A.; Knapp, Keith C.. |
| Water management and reuse at the field level are analyzed under saline, limited drainage conditions. A function relating crop yield and deep percolation flows to applied water and salinity concentration is developed. This function fits simulated data well and is tractable for theoretical and empirical analysis of irrigation economics. With a single irrigation source, irrigation water for cotton and tomatoes at first increases and the decreases with salt concentration. Drain-water reuse is found to be an efficient strategy in events of high surface-water prices and costly solutions to drainage-related environmental problems. However, blending freshwater and drainage appears plausible only under surface water scarcity |
| Tipo: Journal Article |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2002 |
URL: http://purl.umn.edu/31081 |
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| Schwabe, Kurt A.; Schuhmann, Peter W.; Tonkovich, M.. |
| The costs of deer-vehicle collisions (DVCs) nationwide are estimated to be in excess of $1 billion annually. In this study, factors contributing to the abundance of DVCs are identified and the potential effectiveness of various deer management strategies in reducing DVCs is investigated. The added benefits of such strategies are also evaluated in a bioeconomic context by comparing alternative outcomes achievable from implementing DVC mitigation techniques. Focusing on Ohio, results suggest potentially large economic gains exist from reducing DVCs, especially with strategies that combine both deer management schemes and DVC mitigation techniques. |
| Tipo: Journal Article |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2002 |
URL: http://purl.umn.edu/31078 |
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| Schwabe, Kurt A.; Schuhmann, Peter W.. |
| Growing deer populations are controlled through changes in hunting regulations including changes in both hunter bag limits and season length. Such action results in direct benefits to hunters and indirect benefits to motorists and the agricultural sector as a lower deer population leads to fewer incidences of human-deer encounters. Traditional recreation demand models are often employed to examine the welfare implications of changes in daily hunting bag limits. Studies measuring the effects of changes in season length, however, are noticeably absent from the literature. This study uses a nested random utility model to examine hunter choice over site and season selection to derive the welfare implications of changes in season length. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Random utility models; Recreation; Resource /Energy Economics and Policy. |
| Ano: 1999 |
URL: http://purl.umn.edu/21574 |
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| Schwabe, Kurt A.; Knapp, Keith C.. |
| A spatially dynamic programming model of nonuniform irrigation is developed to investigate the nitrogen leaching problem associated with irrigated agriculture. We evaluate the importance of temporal and spatial elements in (i) appropriately modeling the interseasonal corn production problem with nitrogen carry-over and leaching under non-uniform irrigation, and (ii) in adequately evaluating alternative policy instruments for pollution control. Comparisons of the time profiles under spatially variable nitrogen levels arising from nonuniform irrigation are provided along with an evaluation of three different price-based policy instruments for reducing nitrogen leaching. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19466 |
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| Schuhmann, Peter W.; Schwabe, Kurt A.; Easley, James E., Jr.. |
| The potential importance of congestion effects on the management and rationing of recreational facilities and services in the presence of heterogeneous preferences were highlighted nearly twenty-five years ago by Freeman and Haveman (1977). While there have been a number of theoretical models extending and expanding upon this work (McConnell 1988; Anderson 1993), empirical research evaluating such impacts are limited. Evidence of the potential impacts of congestion on resource usage is of obvious importance, especially for natural resource managers who understand that congestion can be an effective rationing device and because users likely differ in both their preferences for use and aversion to congestion. It is the objective of this research to... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2001 |
URL: http://purl.umn.edu/20674 |
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| Connor, Jeffery D.; Kirby, Mac; Schwabe, Kurt A.; Lukasiewicz, Anna; Kaczan, David. |
| This article evaluates irrigated agriculture sector response and resultant economic impacts of climate change for a part of the Murray Darling Basin in Australia. A water balance model is used to predict reduced basin inflows for mild, moderate and severe climate change scenarios involving 10, 20, 40 Celcius warming, and predict 13%, 38% and 63% reduced inflows. Impact on irrigated agricultural production and profitability are estimated with a mathematical programming model using a two-stage approach that simultaneously estimates short and long-run adjustments. The model accounts for a range of adaptive responses including: deficit irrigation, temporarily fallowing some areas, and permanently reducing irrigated area and changing the mix of crops. The... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy; Land Economics/Use. |
| Ano: 2008 |
URL: http://purl.umn.edu/5974 |
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| Schwabe, Kurt A.; Howell, Colleen; Abu Samah, Azizan Haji. |
| The value of forests to poor communities within or around the forest has been garnering increasingly more attention. A recent study partially commissioned by the World Bank reveals that in some 54 case studies evaluated, forest income averaged 22% of total income. The income generated from forest use by these communities serves many roles, including as a primary income source, a secondary income source, and as a safety net to alleviate production shocks to other income-generating activities. From a policy perspective, especially in terms of poverty alleviation and forest management, an understanding of the degree and manner by which poor forest communities depend and draw upon potentially scarce forest resources may be useful. Furthermore, identification... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/21156 |
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| Schwabe, Kurt A.; Knapp, Keith C.; Kan, Iddo. |
| Drainwater management strategies include source control, reuse, treatment, and evaporation ponds; questions of interest are efficient management, policy instruments, and sustainability. A high level of source control is indicated absent reuse due to the relatively high cost of evaporation ponds; this is accomplished largely through high uniformity/high cost irrigation systems. With reuse, the primary form of source control is reduction in land area devoted to freshwater production; the released land goes to reuse production. Reuse appears as an economically promising solution to the drainage problem. A high level of net returns is achieved while maintaining overall hydrologic balance in the system. Economic efficiency and hydrologic balance may be... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2002 |
URL: http://purl.umn.edu/19609 |
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| Registros recuperados: 12 | |
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