|
|
|
|
| |
|
| |
|
|
| Teklewold, Hailemariam. |
| In crop-livestock mixed farming system where farm yard manure (FYM) is considered as important multi-purpose resource such as source of soil organic matter, additional source of income and household source of energy, soil fertility depletion could takes place within the perspective of the household allocation pattern of FYM. This paper estimates structural FYM-allocation model in the presence of corner solution, with the objective of examining the role of various returns to FYM and farmer’s impatience on the propensity to allocate FYM for alternative purposes. We illustrate the model using data based on a random sample of 493 farm households in the central highlands of Ethiopia. We find that the higher the selling price of FYM is the higher the incentive... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Impatience; Shadow price; Allocation; Farm yard manure; Ethiopia; Farm Management; Q01; Q12. |
| Ano: 2011 |
URL: http://purl.umn.edu/116080 |
| |
|
| |
|
|
| Johnson, Fred A; U.S. Geological Survey; fjohnson@usgs.gov; Eaton, Mitchell J; U.S. Geological Survey; mitchell.eaton@usgs.gov; McMahon, Gerard; U.S. Geological Survey; gmcmahon@usgs.gov; Nilius, Raye; U.S. Fish and Wildlife Service; raye_nilius@fws.gov; Bryant, Michael R.; U.S. Fish and Wildlife Service; mike_bryant@fws.gov; Case, David J.; DJ Case & Associates; dave@djcase.com; Martin, Julien; U.S. Geological Survey; julienmartin@usgs.gov; Wood, Nathan J; U.S. Geological Survey; nwood@usgs.gov; Taylor, Laura; North Carolina State University; lotaylor@ncsu.edu. |
| National Wildlife Refuges (NWRs) in the United States play an important role in the adaptation of social-ecological systems to climate change, land-use change, and other global-change processes. Coastal refuges are already experiencing threats from sea-level rise and other change processes that are largely beyond their ability to influence, while at the same time facing tighter budgets and reduced staff. We engaged in workshops with NWR managers along the U.S. Atlantic coast to understand the problems they face from global-change processes and began a multidisciplinary collaboration to use decision science to help address them. We are applying a values-focused approach to base management decisions on the resource objectives of land managers, as well as... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Adaptive management; Allocation; Decision analysis; Ecosystem valuation; Global change; National Wildlife Refuge; Objectives; Policy; Portfolio analysis; Reserve design; Stakeholders. |
| Ano: 2015 |
|
| |
|
| |
|
|
| Axelrad, Gilad; Feinerman, Eli. |
| With some agri-environmental restrictions, municipal wastewater can be utilized for agricultural irrigation and river rehabilitation. This paper develops a single-year planning model for a region in Israel which consists of a city and three potential wastewater consumers. The model incorporates, in one endogenous system, the economic, physical and biological relationships in the water-soil-plant environment system and its objective is to maximize the regional social welfare composed of the sum of agricultural and environmental net benefits. The model determines the optimal crop mix and the optimal allocation of the limited water and land resources among all potential users. Then, different allocation approaches from the concept of transferable utility... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Wastewater reuse; Allocation; Optimization Model; Transferable utility games; Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/7141 |
| |
|
| |
|
| |
|
|
|
