Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 60
Primeira ... 123 ... Última
Imagem não selecionada

Imprime registro no formato completo
2nd Forum on Irrigation and water for sustainable development: 15 –16 December, 2008 Ghion Hotel, Addis Ababa, Ethiopia AgEcon
Awulachew, Seleshi Bekele; Erkossa, Teklu; Balcha, Yodit.
Tipo: Presentation Palavras-chave: Sustainable development; Irrigation management; Irrigation water; Irrigated farming; Irrigation systems; Supplemental irrigation; Land management; Land use; Investment; Case studies; Government policy; Rural poverty; Groundwater; Small scale systems; Socioeconomic development; Economic aspects; Economic growth; Income; Water management; Water resources development; Water harvesting; Water supply; Public policy; Agricultural production; Developing countries; Public-private cooperation; History; Case studies; River basins; Crop production; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Farm Management; Financial Economics; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Production Economics; Public Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/118411
Imagem não selecionada

Imprime registro no formato completo
A framework for institutional analysis for water resources management in a river basin context. AgEcon
Bandaragoda, Don Jayatissa.
Tipo: Working or Discussion Paper Palavras-chave: Institutional development; Organizational change; Water resource management; River basins; Institutional and Behavioral Economics; Resource /Energy Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/92780
Imagem não selecionada

Imprime registro no formato completo
Agricultural water productivity: issues, concepts and approaches. AgEcon
Cook, Simon; Gichuki, Francis; Turral, Hugh.
Tipo: Working or Discussion Paper Palavras-chave: Water scarcity; Irrigation water; Productivity; Indicators; Water conservation; River basins; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/91963
Imagem não selecionada

Imprime registro no formato completo
An assessment of crop water productivity in the Indus and Ganges River Basins: current status and scope for improvement AgEcon
Cai, Xueliang; Sharma, Bharat R.; Matin, Mir Abdul; Sharma, Devesh; Gunasinghe, Sarath.
The Indus and Ganges River Basin, being the most populous in the world, is under extreme pressure to sustain food security. Production resources including water are being exploited to various levels from underdevelopment to heavy overexploitation. This report provides a bird’s eye view of the basin and focuses on the nexus between agricultural production and water consumption, making it possible to pinpoint the areas with high/low water productivity and identify the factors behind this, which helps to promote informed decision making in light of environmental sustainability.
Tipo: Report Palavras-chave: Water productivity; Crops; Yields; Rice; Wheat; River basins; Models; Remote sensing; Evapotranspiration; Mapping; Crop Production/Industries; Food Security and Poverty.
Ano: 2010 URL: http://purl.umn.edu/112970
Imagem não selecionada

Imprime registro no formato completo
Assessing the economic impact of redistributing water within a catchment: A case study of the Musi Catchment in the Krishna Basin in India AgEcon
Davidson, Brian; Hellegers, Petra J.G.J.; Samad, Madar.
The aim in this paper was to present the details of an economic modeling exercise conducted on the Musi Catchment of the Krishna Basin. The model has the unique characteristic of being able to value the water used on individual crops and in different regions. Thus, the individual values of water used to produce different crops, grown over two different seasons and over five very different regions within a catchment, were determined. This is a significant improvement over previous attempts, where a single value of water in a catchment was derived regardless of what it is used for, when it was used and where it used in the catchment. In addition to the agricultural valuation process, some account was made for the other uses of water and how they should be...
Tipo: Working or Discussion Paper Palavras-chave: Economic impact; Catchment areas; River basins; Models; Water allocation; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/91870
Imagem não selecionada

Imprime registro no formato completo
Basin-level use and productivity of water: examples from South Asia AgEcon
Molden, David J.; Sakthivadivel, Ramasamy; Habib, Zaigham.
Discusses and illustrates concepts for identifying ways of improving productivity of water within basins. The results of applying a water accounting procedure to four sub-basins in South Asia (Bhakra in India; Chishtian in Pakistan; Huruluwewa in northern Sri Lanka; and Kirindi Oya in southern Sri Lanka) are presented. The methodology used identifies the quantities and productivity of various uses of water within a basin. This information is then used to identify the water-saving potential, and the means of improving the productivity of the managed supplies.
Tipo: Report Palavras-chave: Water management; Water conservation; River basins; Water use; Productivity; Case studies; Irrigated farming; Indicators; Water scarcity; South Asia; India; Pakistan; Sri Lanka; Bhakra; Chishtian; Kirindi Oya; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; Crop Production/Industries; Farm Management; Production Economics; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2001 URL: http://purl.umn.edu/61099
Imagem não selecionada

Imprime registro no formato completo
Capacity building for participatory irrigation management in Sindh Province of Pakistan. AgEcon
Memon, Yameen; Talpur, Mustafa; Murray-Rust, Hammond.
Tipo: Working or Discussion Paper Palavras-chave: River basins; Institutions; Organizations; Private sector; Public sector; Local government; Mapping; Water resource management; Water policy; Legislation; Rural women; Constraints; Groundwater; Surface water; Water quality; Water use; Water users; Dams; Reservoirs; Large-scale systems; Irrigation management; Industrialization; Case studies; Operations; Maintenance; Canals; Conflict; Farmer-agency interactions; Policy; Water supply; Rural development; Community/Rural/Urban Development; Farm Management; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2001 URL: http://purl.umn.edu/92769
Imagem não selecionada

Imprime registro no formato completo
Charging for irrigation water: The issues and options, with a case study from Iran AgEcon
Perry, Christopher J..
Inadequate funding for maintenance of irrigation works and emerging shortages of water are prevalent. The use of water charges to generate resources for maintenance and to reduce demand is widely advocated. Examples from other utilities, and from the domestic/industrial sectors of water supply suggest the approach could be effective. In developing countries, the facilities required for measured and controlled delivery of irrigation are rarely in place, and would require a massive investment in physical, legal and administrative infrastructure. To be effective in curtailing demand, the marginal price of water must be significant. The price levels required to cover operation and maintenance (O&M) costs are too low to have a substantial impact on demand,...
Tipo: Report Palavras-chave: Irrigation management; Productivity; Water allocation; Water use efficiency; Operations; Maintenance; Cost recovery; User charges; Water rates; Pricing; River basins; Water shortage; Economic aspects; Salinity; Case studies; Agribusiness; Agricultural Finance; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Financial Economics; Land Economics/Use; Production Economics; Productivity Analysis; Public Economics.
Ano: 2001 URL: http://purl.umn.edu/44567
Imagem não selecionada

Imprime registro no formato completo
Climate change impacts and adaptation in Nepal. AgEcon
Bartlett, Ryan; Bharati, Luna; Pant, Dhruba; Hosterman, Heather; McCornick, Peter G..
The impact of climate change (CC) on water resources is likely to affect agricultural systems and food security. This is especially true for Nepal, a least developed country, where a high percentage of the population is dependent on agriculture for its livelihoods. It is thus crucial for Nepal’s leaders and resource managers to draft and begin implementing national adaptation plans. This working paper aims to create a more comprehensive understanding of how the impacts of CC will be realized at different scales in Nepal, from household livelihoods to national food security, and the many institutions governing the ultimate adaptation process.
Tipo: Working or Discussion Paper Palavras-chave: Climate change; Impact assessment; Adaptation; National planning; Institutions; Water resource management; Social aspects; Political aspects; River basins; Runoff; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/108670
Imagem não selecionada

Imprime registro no formato completo
Climate change impacts on hydrology and water resources of the Upper Blue Nile River Basin, Ethiopia AgEcon
Kim, Ungtae; Kaluarachchi, Jagath J.; Smakhtin, Vladimir U..
The report evaluates the impacts of climate change on the hydrological regime and water resources of the Blue Nile River Basin in Ethiopia. It starts from the construction of the climate change scenarios based on the outcomes of several general circulation models (GCMs), uses a simple hydrological model to convert theses scenarios into runoff, and examines the impacts by means of a set of indices. The results, however uncertain with existing accuracy of climate models, suggest that the region is likely to have the future potential to produce hydropower, increase flow duration, and increase water storage capacity without affecting outflows to the riparian countries in the 2050s.
Tipo: Report Palavras-chave: Climate change; Hydrology; River basins; Runoff; Precipitation; Models; Dams; Operating policies; Water power; Drought; Analysis; Africa; Ethiopia; Egypt; Sudan; Upper Blue Nile River Basin; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008 URL: http://purl.umn.edu/53025
Imagem não selecionada

Imprime registro no formato completo
Conjunctive water management in the Rechna Doab: An overview of resources and issues AgEcon
Jehangir, Waqar Ahmed; Qureshi, Asad Sarwar; Ali, Nazim.
Tipo: Working or Discussion Paper Palavras-chave: Water management; Conjunctive use; Surface water; Groundwater; Aquifers; Pumping; Water quality; River basins; Productivity; Canals; Waterlogging; Salinity; Land resources; Land use; Crop production; Rice; Wheat; Cotton; Sugarcane; Crop Production/Industries; Land Economics/Use; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2002 URL: http://purl.umn.edu/92704
Imagem não selecionada

Imprime registro no formato completo
Developing a hydrological model for the Mekong Basin: impacts of basin development on fisheries productivity. AgEcon
Kite, Geoff.
Tipo: Working or Discussion Paper Palavras-chave: Simulation models; Hydrology; River basins; Water resource management; Productivity; Flow; Fisheries; Mapping; Data collection; Computer techniques; Climate; Soil properties; Stream flow; Dams; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/92781
Imagem não selecionada

Imprime registro no formato completo
Developing effective institutions for water resources management: A case study in the Deduru Oya Basin, Sri Lanka AgEcon
Somaratne, Pallewatte G.; Jinapala, Kiribandage; Perera, L.R.; Ariyaratne, Badugodahewa Ranjith; Bandaragoda, Don Jayatissa; Makin, I.W..
Tipo: Working or Discussion Paper Palavras-chave: River basins; Water resource management; Water lifting; Wells; Domestic water; Population; Economic aspects; Income; Irrigation programs; Institutions; Policy; Groundwater; Agricultural development; Fish farming; Pumps; Ecology; Water supply; Drought; Poverty; Land use; Water scarcity; Natural resources; Agricultural production; Cropping systems; Agricultural and Food Policy; Agricultural Finance; Consumer/Household Economics; Crop Production/Industries; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Political Economy; Production Economics; Public Economics; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/92665
Imagem não selecionada

Imprime registro no formato completo
Ecology, Planning, and River Management in the United States: Some Historical Reflections Ecology and Society
Reuss, Martin; U.S. Army Corps of Engineers; Martin.A.Reuss@HQ02.USACE.ARMY.MIL.
River ecologists are also river-basin planners. However, their role in planning has developed slowly over the decades since the beginning of the 20th century. Three major factors explain this phenomenon. First, ecologists focused on plant and animal communities rather than on broader policy issues related to land settlement and water development. Second, the federal government, and most state and local governments as well, used mainly economic criteria to justify projects. Intangible benefits, including the value of species or an aesthetically pleasing landscape, drew relatively little attention. Third, the public generally favored development, especially during the Great Depression of the 1930s. Only after World War II did the public's position shift in...
Tipo: Peer-Reviewed Reports Palavras-chave: History; Ecology; River basins; Water management; Planning; Benefit-cost analysis; Multiobjective planning; River restoration; Geomorphology.
Ano: 2005
Imagem não selecionada

Imprime registro no formato completo
Economics and politics of water resources development: Uda Walawe Irrigation Project, Sri Lanka AgEcon
Molle, Francois; Renwick, Mary E..
The Uda Walawe Irrigation and Resettlement Project (UWIRP) located in the Southern dry zone of Sri Lanka was initiated in the early 1950s. The original plan for the UWIRP was a highly ambitious social, economic and physical engineering project aimed at creating a modern, profitable agriculture sector. This report examines the history of water resources development and investment decisions for the UWIRP over a period of 50 years and uncovers underlying processes that shaped the evolution of the project and highlights the limitation of viewing development as a mere set of technical and social engineering endeavors.
Tipo: Report Palavras-chave: Water resources development; Irrigation programs; History; River basins; Rehabilitation; Costs; Crop production; Domestic water; Water use; Reservoirs; Fisheries; Decision making; Cost benefit analysis; Cost recovery; Water requirements; Water demand; Demand and Price Analysis; Environmental Economics and Policy; Farm Management.
Ano: 2005 URL: http://purl.umn.edu/44525
Imagem não selecionada

Imprime registro no formato completo
El Islote El Palmar, resultado de una evolución a largo plazo de la distribución del drenaje entre los Ríos Daule y Babahoyo en la Cuenca del Guayas OceanDocs
Dumont, J.F.; Santana, E.; Soledispa, B.; King, A..
Se analizó la forma de la red de drenaje de la parte sur de la Cuenca del Guayas, desde Quevedo al norte hasta la confluencia de los ríos Daule y Babahoyo al sur. La idea de que la distribución del drenaje en la Cuenca del Guayas es variable y puede tener un efecto sobre la repartición de los caudales respectivos de los ríos Daule y Babahoyo, es basada en dos elementos, uno geológico y el otro histórico.
Tipo: Journal Contribution Palavras-chave: Coastal morphology; Sedimentation; River basins; Rivers; Rivers; Sedimentation; River basins; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_6926; Http://aims.fao.org/aos/agrovoc/c_6613.
Ano: 2007 URL: http://hdl.handle.net/1834/2366
Imagem não selecionada

Imprime registro no formato completo
Environmental water needs and impacts of irrigated agriculture in river basins: A framework for a new research program AgEcon
Smakhtin, Vladimir U..
Tipo: Working or Discussion Paper Palavras-chave: Water resource management; Water conservation; Irrigated farming; River basins; Environmental effects; Ecosystems; Water requirements; Water allocation; Catchment areas; Lagoons; Wetlands; Environmental Economics and Policy; Farm Management; Resource /Energy Economics and Policy.
Ano: 2002 URL: http://purl.umn.edu/92695
Imagem não selecionada

Imprime registro no formato completo
Establishing a catchment monitoring network through a participatory approach: A case study from the Potshini Catchment in the Thukela River Basin, South Africa AgEcon
Kongo, Victor M.; Jewitt, Graham P.W.; Lorentz, Simon A..
Tipo: Working or Discussion Paper Palavras-chave: River basins; Catchment areas; Monitoring; Surveys; Hydrology; Discharges; Flumes; Stream flow; Runoff; Conservation tillage; Groundwater; Rain; Evaporation; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/91877
Imagem não selecionada

Imprime registro no formato completo
Estimating productivity of water at different spatial scales using simulation modeling AgEcon
Droogers, Peter; Kite, Geoff.
A clear understanding of the current water balance is required to explore options for water saving measures. However, measurement of all the terms in the water balance is infeasible in terms of spatial and temporal scale, but hydrological simulation models can fill the gap between measured and required data. For a basin in Western Turkey, simulation modeling at three different scales, field, irrigation scheme and basin scale, was performed to obtain all terms of the water balance. These water balance numbers were used to calculate the Productivity of Water at the three spatial levels distinguished to assess the performance of the systems.
Tipo: Report Palavras-chave: Water resources; Productivity; Simulation models; Water scarcity; Water supply; Water balance; Performance indexes; Indicators; River basins; Cropping systems; Crop yield; Cotton; Hydrology; Economic analysis; Agribusiness; Agricultural Finance; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Productivity Analysis; Research Methods/ Statistical Methods.
Ano: 2001 URL: http://purl.umn.edu/44568
Imagem não selecionada

Imprime registro no formato completo
Evaluation of historic, current and future water demand in the Olifants River Catchment, South Africa AgEcon
McCartney, Matthew P.; Arranz, Roberto.
Water resource development has played a significant role in the expansion of agriculture and industry in the Olifants River Catchment. However, currently water deficit is one of the major constraints hampering development in the catchment; both the mining and agricultural sectors are producing below optimal levels because of their reliance on insufficient supplies. In this study, the Water Evaluation and Planning (WEAP) model was used to evaluate scenarios of historic, current and future water demand in the catchment. For each scenario, the WEAP model was used to simulate demand in five different sectors (rural, urban, mining, commercial forestry and irrigation) over a 70-year period of varying rainfall and hydrology. Levels of assured supply were...
Tipo: Report Palavras-chave: River basins; Catchment areas; Water resources development; Water demand; Water allocation; Simulation models; Calibrations; Water use; Irrigation water; Domestic water; Ecology; South Africa; Olifants River Catchment; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Labor and Human Capital; Land Economics/Use; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2007 URL: http://purl.umn.edu/61095
Registros recuperados: 60
Primeira ... 123 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional