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			Ordenar por:  Relevância Autor Título Ano Registros recuperados: 61 Primeira ... 1 2 3 4 ... Última Water supply from wetlands in Tanzania OceanDocs Mihayo, J.M.. This paper gives a brief discussion on water supply from wetlands in Tanzania. The majordrainage basins in Tanzania are described and the status and role of the Division of WaterResearch in the monitoring of water resources and data collection from wetlands and watersources are highlighted. The role of wetlands in the hydrological cycle, and the utilisation ofwetlands as water supply sources are discussed. The need for conservation and protection ofwetlands and other water sources is outlined. Tipo: Working Paper Palavras-chave: Wetlands; Water supply. Ano: 1993 URL: http://hdl.handle.net/1834/527 Taking a multiple-use approach to meeting the water needs of poor communities brings multiple benefits AgEcon International Water Management Institute (IWMI); International Water and Sanitation Centre; Global Water Partnership (GWP). This briefing was produced by International Water Management Institute (IWMI), the IRC International Water and Sanitation Centre, the Technical Committee of the Global Water Partnership (GWP) and the GWP Advisory Center at IWMI. It draws primarily on research from the Multiple Use Systems (MUS) project and the Productive Uses of Water Thematic Group (Prodwat) (see references for further reading). The brief complements Catalyzing Change, the GWP handbook for developing IWRM and water efficiency strategies and plans, and the associated policy and technical briefs. Single-use approaches to water development and management do not reflect the realities of poor people’s water use. People use domestic water supplies for activities such as irrigating backyard... Tipo: Report Palavras-chave: Water use; Domestic water; Irrigation water; Poverty; Water supply; Drinking water; Agricultural and Food Policy; Food Security and Poverty. Ano: 2006 URL: http://purl.umn.edu/113060 Farmer response to rationed and uncertain irrigation supplies AgEcon Perry, Christopher J.; Narayanamurthy, S.G.. Explores the theoretical and actual responses of farmers faced with irrigation supplies that are limited in relation to available land and labor resources, and where the actual schedule and available volume for delivery are uncertain. Tipo: Report Palavras-chave: Water resource management; Water use efficiency; Evapotranspiration; Agricultural production; Irrigated farming; Irrigation scheduling; Water allocation; Water supply; Water scarcity; Water delivery; Reservoirs; Uncertainty; Yield; Crop Production/Industries; Labor and Human Capital; Land Economics/Use. Ano: 1998 URL: http://purl.umn.edu/44582 Policies, legislation and organizations related to water in South Africa, with special reference to the Olifants River Basin. AgEcon Thompson, Hubert; Stimie, Chris M.; Richters, E.; Perret, Sylvain R.. Tipo: Working or Discussion Paper Palavras-chave: Water resource management; River basins; Water use; Organizations; Institutions; Mapping; Government; Political aspects; Ethnology; Social status; Water policy; Water law; Land tenure; Water supply; Sanitation; Water users; Land use; Conflict; Private sector; Non-governmental organizations; Local government; Water users' associations; Catchment areas; Monitoring; Community/Rural/Urban Development; Institutional and Behavioral Economics; Land Economics/Use; Political Economy; Resource /Energy Economics and Policy. Ano: 2001 URL: http://purl.umn.edu/92770 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 World water demand and supply, 1990 to 2025: scenarios and issues AgEcon Seckler, David; Amarasinghe, Upali A.; Molden, David J.; de Silva, Radhika; Barker, Randolph. Presents two alternative scenarios of water demand and supply for 118 countries over the 1990 to 2025 period and develops indicators of water scarcity for each country and for the world as a whole. This study is the first step in IWMI's long-term research goal: to determine the extent and depth of water scarcity, its consequences for individual countries and what can be done about it. Tipo: Report Palavras-chave: Irrigation management; Water balance; River basins; Basin irrigation; Water use efficiency; Water supply; Water requirements; Domestic water; Water scarcity; Water demand; Water shortage; Irrigated farming; Productivity; Food security; Recycling; Rice; Agribusiness; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty. Ano: 1998 URL: http://purl.umn.edu/61108 Cities versus agriculture: Revisiting intersectoral water transfers, potential gains and conflicts AgEcon Molle, Francois; Berkoff, Jeremy. Tipo: Report Palavras-chave: Water scarcity; Water demand; Water transfer; Water use; Water supply; Water allocation; Environmental effects; Water market; Community/Rural/Urban Development; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Land Economics/Use; Production Economics; Productivity Analysis; Risk and Uncertainty. Ano: 2006 URL: http://purl.umn.edu/91817 The economic conception of water AgEcon Hanemann, W. Michael. Published in: WATER CRISIS : MYTH OR REALITY?, edited by Peter P. Rogers, M. Ramon Llamas, and Luis Martinez-Cortina. London; New York: Taylor & Francis, 2006, p. 61-91 Tipo: Working Paper Palavras-chave: Economic aspects; Water costs; Water demand; Water pricing; Water supply; Demand and Price Analysis. Ano: 2005 URL: http://purl.umn.edu/120463 Economies of Scale and Technical Efficiency in Community Water Systems AgEcon Shih, Jhih-Shyang; Harrington, Winston; Pizer, William A.; Gillingham, Kenneth. In this study we use datasets from the 1995 and 2000 Community Water Supply surveys to examine the production costs of water supply systems. We first estimate the economies of scale in water supply by estimating the total unit cost as well as individual component cost elasticities. For total unit cost elasticity, we find that a 1% increase in production reduces unit costs by a statistically significant 0.16%. For individual component cost elasticities, we find that higher economies of scale exist in capital costs, outside costs, other costs, and materials costs; labor costs and energy costs exhibit lower but still positive economies of scale. These economies of scale may reflect production economies or suggest that larger systems are better than smaller... Tipo: Working or Discussion Paper Palavras-chave: Small water systems; Water supply; Capacity development; Economies of scale; Community water systems; Resource /Energy Economics and Policy; Q25; Q28. Ano: 2004 URL: http://purl.umn.edu/10788 Economic Impacts of Reduced Delta Exports Resulting from the Wanger Interim Order for Delta Smelt AgEcon Sunding, David L.; Ajami, Newsha K.; Hatchett, Steven; Mitchell, David; Zilberman, David. Tipo: Working or Discussion Paper Palavras-chave: Water transfers; Water supply; Water demand; Water conservation; Water policy; Environmental Economics and Policy; Research Methods/ Statistical Methods. Ano: 2009 URL: http://purl.umn.edu/51558 Integrated development and management of water resources for productive and equitable use in the Indrawati River Basin, Nepal AgEcon Bhattarai, Madhusudan; Pant, Dhruba; Mishra, V.S.; Devkota, Hari; Pun, Shuku; Kayastha, R.N.; Molden, David J.. Tipo: Working or Discussion Paper Palavras-chave: River basin development; Water transfer; Water rights; Water supply; Water demand; Water balance; Environmental effects; Social aspects; Development projects; Non-governmental organizations; Villages; Water users associations; Conflict; Farmers; Environmental Economics and Policy; Farm Management; Institutional and Behavioral Economics; Resource /Energy Economics and Policy. Ano: 2002 URL: http://purl.umn.edu/92699 Possible impacts of the transformation of water infrastructure on productive water uses: The case of the Seokodibeng village in South Africa AgEcon Ladki, Marvan; Seshoka, Jetrick; Faysse, Nicolas; Levite, Herve; van Koppen, Barbara. Tipo: Working or Discussion Paper Palavras-chave: Water users’ associations; Water supply; Social participation; Land use; Water use; Villages; History; Domestic water; Irrigation water; Food security; Sanitation; Cost recovery; Project management; Pipes; Water balance; Livestock; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Livestock Production/Industries. Ano: 2004 URL: http://purl.umn.edu/92656 Performance of two transferred modules in the Lagunera Region: Water relations AgEcon Levine, G.; Galvan, A. Cruz; Garcia, D.; Garces-Restrepo, Carlos; Johnson, Sam H., III. Evaluates the degree of success of water users in managing water allocations and deliveries in two irrigation district modules in the Lagunera Region of Mexico. Policies and practices are evaluated from the standpoints of the nature of planning rules, consistency, equity, and efficiency in implementation of the plans. Tipo: Report Palavras-chave: Water policy; Performance; Privatization; Irrigation systems; Operations; Maintenance; Irrigation efficiency; Water users' associations; Water rights; Water allocation; Water supply; Water distribution; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Farm Management; Land Economics/Use; Productivity Analysis. Ano: 1998 URL: http://purl.umn.edu/44583 Development and evaluation of a regional water poverty index for Benin AgEcon Heidecke, Claudia. The paper discusses the application of the Water Poverty Index (WPI) as a monitoring tool for Benin’s water sector. Benin is currently in a process of political decentralization shifting responsibility for and administration of rural water supplies from the national to the communal level. Appropriate indicators are needed for monitoring and analyzing the progress of the water sector for each community. The Water Poverty Index allows monitoring of a combination of aspects affecting rural water management, including water sources, access to and use of water, human capacity to manage water, and environmental impacts. The application of this index is tested for Benin at the regional level. A series of variables have been chosen for inclusion into the index... Tipo: Report Palavras-chave: Water poverty index; Water supply; Decentralization; Resource /Energy Economics and Policy. Ano: 2006 URL: http://purl.umn.edu/55413 Farmers' perceptions of the social mobilization of water user organizations in the Sindh, Pakistan AgEcon Starkloff, Ralf. Tipo: Working or Discussion Paper Palavras-chave: Water users' associations; Participatory management; Farmer participation; Leadership; Water supply; Water distribution; Maintenance; Privatization; Irrigation programs; Irrigation canals; Farmers' associations; Farm Management; Institutional and Behavioral Economics. Ano: 2001 URL: http://purl.umn.edu/92778 Improved water and land management in the Ethiopian highlands: its impact on downstream stakeholders dependent on the Blue Nile; Intermediate Results Dissemination Workshop February 5-6, 2009, Addis Ababa, Ethiopia AgEcon Awulachew, Seleshi Bekele; Erkossa, Teklu; Smakhtin, Vladimir U.; Fernando, Ashra. Tipo: Conference Paper or Presentation Palavras-chave: River basin management; Watershed management; Farming systems; Water balance; Reservoirs; Water supply; Irrigation requirements; Irrigation programs; Simulation models; Sedimentation; Rainfall-Runoff relationships; Erosion; Soil water; Water balance; Soil conservation; Institutions; Organizations; Policy; Water governance; International waters; Institutional and Behavioral Economics; Land Economics/Use; Resource /Energy Economics and Policy. Ano: 2009 URL: http://purl.umn.edu/118389 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 Water markets in the Fordwah/Eastern Sadiqia area: an answer to perceived deficiencies in canal water supplies? AgEcon Strosser, Pierre; Kuper, Marcel. This paper presents the results of a study on water markets in the Fordwah/Eastern Sadiqia Area, Punjab, Pakistan. The study stresses and quantifies the importance of water markets in the area. A first attempt is made to evaluate the impact of water markets on the quality of irrigation services. Tipo: Working or Discussion Paper Palavras-chave: Water market; Water supply; Groundwater; Surface irrigation; Conjunctive use; Tube well irrigation; Agricultural production; Water policy; Pricing; Water costs; Farmer participation; Agricultural and Food Policy; Crop Production/Industries; Farm Management; Financial Economics; Production Economics. Ano: 1994 URL: http://purl.umn.edu/114047 Innovative approaches to agricultural water use for improving food security in Sub-Saharan Africa AgEcon Inocencio, Arlene; Sally, Hilmy; Merrey, Douglas J.. Tipo: Working or Discussion Paper Palavras-chave: Irrigated farming; Water use; Food security; Water resources; Water supply; Rain; Water harvesting; Wetlands; Food production; Groundwater management; Urbanization; Recycling; Effluents; Waste waters; Water reuse; Water demand; Crop production; Crop Production/Industries; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Resource /Energy Economics and Policy. Ano: 2002 URL: http://purl.umn.edu/92701 Economic analysis of water supply cost structure in the Middle Olifants sub-basin of South Africa AgEcon Tsegai, Daniel W.; Linz, Teresa; Kloos, Julia. Using data gathered from the National Treasury of South Africa, we examine the structure of water supply costs and tariffs of Water Service Authorities (WSAs) in the Middle Olifants sub-basin of South Africa. Using the translog cost function method, the marginal cost of water supply and economies of scale are estimated. Comparison of tariffs and marginal costs show that the estimated marginal cost is higher than the actual tariff paid by consumers. This implies that WSAs in the Middle Olifants are not charging enough to recover the costs of the water services. Thus, among other things, pricing of water at its marginal cost would partly assist in solving the cost recovery problem. Raised tariffs would in turn contribute to improved efficiency of water use.... Tipo: Working or Discussion Paper Palavras-chave: Translog cost function; Water supply; Water Service Authority; Middle Olifants; South Africa; Environmental Economics and Policy. Ano: 2009 URL: http://purl.umn.edu/49926 Registros recuperados: 61 Primeira ... 1 2 3 4 ... Última

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