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Registros recuperados: 21
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A global perspective on water scarcity and poverty: achievements and challenges for water resource management AgEcon
Barker, Randolph; van Koppen, Barbara; Shah, Tushaar.
Tipo: Book Palavras-chave: Water scarcity; Poverty; Water resources development; Groundwater management; Food security; Irrigated farming; Agricultural production; Tube well irrigation; Sustainability; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Production Economics; Resource /Energy Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/118302
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A Stochastic Frontier Approach for Measuring Technical Efficiencies of Date Farms in Southern Tunisia AgEcon
Belloumi, Mounir; Matoussi, Mohamed Salah.
The main objective of this research is to compare estimates of technical efficiency obtained from the stochastic frontier approach for two samples of farmers of private and water user associations in the Nefzaoua Oases region (Tunisia), which are characterized by a severe scarcity of water and especially a high degree of salinity. Technical inefficiency effects are modeled as a function of farm-specific socioeconomic factors. Results suggest that both systems are technically inefficient. On average, the private system is found to be slightly more efficient than the associative one. Date yield could be explained mainly by four variables: water quantity applied per palm tree, labor per palm tree, phosphate per palm tree, and water salinity. Output...
Tipo: Journal Article Palavras-chave: Salinization; Private and GIC systems; Technical efficiency; Nefzaoua oases; Date production; Groundwater management; Farm Management; Productivity Analysis.
Ano: 2006 URL: http://purl.umn.edu/10221
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China’s water pricing reforms for irrigation: effectiveness and impact AgEcon
Liao, Yongsong; Gao, Zhanyi; Bao, Ziyun; Huang, Qingwen; Feng, Guangzhi; Xu, Di; Cai, Jiabin; Han, Huijing; Wu, Weifeng.
Irrigation occupies a central position in China’s crop production. However, due to low per capita water resources, much worse, unevenly distributed over regions and time and the rapid increase of water diversions to non-irrigation sectors, irrigation water shortages have become a very serious problem. Without the adoption of effective measures this problem may even threaten China’s food security. Currently, irrigation efficiency is very low in general, irrigation water prices cannot fully recover water supply costs, and irrigation facilities are aging due to the lack of funding for O&M (operation & maintenance). Since water prices are regulated by the government, and not determined by the market, water prices did not work effectively in water...
Tipo: Working or Discussion Paper Palavras-chave: Water rates; Pricing; Price policy; Cost recovery; Farmers attitudes; Water rights; Water market; Water supply; User charges; Irrigation water; Water allocation; Irrigation management; Participatory management; Water conservation; Institutions; Organizations; Water users associations; Cereals; Yields; Models; Labor; Cost benefit analysis; Irrigation requirements; Investment; Groundwater management; Wells; Irrigation canals; Food security; Legal aspects; Crop Production/Industries; Farm Management; Food Security and Poverty; Production Economics; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/91872
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Does Efficient Irrigation Technology Lead to Reduced Groundwater Extraction?: Empirical Evidence AgEcon
Pfeiffer, Lisa; Lin, C.-Y. Cynthia.
Please see the revised, peer reviewed paper: Lisa Pfeiffer, C.-Y. Cynthia Lin, Does efficient irrigation technology lead to reduced groundwater extraction? Empirical evidence, Journal of Environmental Economics and Management, Available online 23 December 2013, ISSN 0095-0696, http://dx.doi.org/10.1016/j.jeem.2013.12.002. (http://www.sciencedirect.com/science/article/pii/S0095069613001095)
Tipo: Conference Paper or Presentation Palavras-chave: Irrigation efficiency; Groundwater management; Irrigation technology; Environmental Economics and Policy; Land Economics/Use.
Ano: 2010 URL: http://purl.umn.edu/60927
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Evaluation of Bayesian Networks in Participatory Water Resources Management, Upper Guadiana Basin, Spain Ecology and Society
Zorrilla, Pedro; Department of Geodynamics, Faculty of Geological Sciences, Complutense University of Madrid, Spain; pedro.zorrilla@geo.ucm.es; Carmona, Gema; Technical University of Madrid, Department of Agricultural Economics, Spain;; Varela-Ortega, Consuelo; Technical University of Madrid, Department of Agricultural Economics, Spain;; Bromley, John; Oxford University School of Geography and the Environment, Centre for Water Research, United Kingdom;; Henriksen, Hans Jorgen; Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark;.
Stakeholder participation is becoming increasingly important in water resources management. In participatory processes, stakeholders contribute by putting forward their own perspective, and they benefit by enhancing their understanding of the factors involved in decision making. A diversity of modeling tools can be used to facilitate participatory processes. Bayesian networks are well suited to this task for a variety of reasons, including their ability to structure discussions and visual appeal. This research focuses on developing and testing a set of evaluation criteria for public participation. The advantages and limitations of these criteria are discussed in the light of a specific participatory modeling initiative. Modeling work was conducted in the...
Tipo: Peer-Reviewed Reports Palavras-chave: Bayesian networks; Decision support system; Evaluation; Groundwater management; Guadiana Basin; Participatory modeling; Spain; Water management; Water use conflicts.
Ano: 2010
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Groundwater policy: issues and alternatives in India AgEcon
Moench, Marcus.
This paper reviews policy-related issues discussed in recent conferences that will affect groundwater development and management efforts in South Asia. Emphasis is given to policy issues surrounding emerging groundwater depletion and quality concerns, and issues concerning the equitable development of groundwater for poverty alleviation. The paper outlines the range of services that depend on groundwater resources and outlines the range of services that depend on groundwater resources to provide these services, and the complications stemming from the fragmented approach taken to water management throughout the region. A range of responses dealing with the management of the physical system is identified. In conclusion , the paper discusses institutional...
Tipo: Book Palavras-chave: Groundwater management; Groundwater extraction; Water policy; Monitoring; Environment; Poverty; Aquifers; Case studies; Salinity; Salt water intrusion; Water quality; Pollution; Water market; Water use efficiency; Crop Production/Industries; Farm Management; Food Security and Poverty.
Ano: 1996 URL: http://purl.umn.edu/113620
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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
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Irrigation management in Pakistan and India: Comparing notes on institutions and policies AgEcon
Shah, Tushaar; Hussain, Intizar; Rehman, Saeed ur.
Tipo: Working or Discussion Paper Palavras-chave: Irrigation management; Productivity; Privatization; Groundwater irrigation; Irrigated farming; Equity; Water distribution; Groundwater management; Economic aspects; Tube wells; Price policy; Electricity supplies; Pumps; Demand and Price Analysis; Farm Management; Productivity Analysis; Public Economics; Resource /Energy Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/92782
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La gestion de las aguas subterraneas en el acuifero Mancha Occidental AgEcon
Iglesias, Eva.
RESUMEN: En este artículo se aborda la problemática que plantea la recuperación del acuífero Mancha Occidental en el que existe una importante externalidad ambiental que se deriva de la relación entre las reservas de agua existentes en el acuífero y los humedales Tablas de Daimiel. Para ello, se desarrollan varios modelos de programación matemática que permiten evaluar distintos instrumentos de gestión para guiar la recuperación del acuífero a un estado sostenible. Los resultados obtenidos permiten al menos cuestionar la extendida regla de Gisser-Sánchez y revelan que las ganancias derivadas de la gestión óptima pueden ser significativas. En segundo lugar, las cuotas constantes por explotación se revelan como el instrumento menos eficiente tanto desde la...
Tipo: Journal Article Palavras-chave: Groundwater management; Environmental externalities; Water bank; Resource /Energy Economics and Policy; Q25.
Ano: 2002 URL: http://purl.umn.edu/28755
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Managing Water Resources in Georgia: Lessons from Experiences in the Western States AgEcon
Cummings, Ronald G..
This paper addresses the critical importance for Georgia of a comprehensive state-wide water plan, as well as statutory and regulatory structures that make manifest the state’s commitment to the efficient use of its water resources. To establish this importance, the author draws form experiences in Western States. Aside from benefits attributable to improved in-state allocations of water, the benefits of comprehensive state water plans are shown to relate to criteria now being used by the Supreme Court in adjudications involving equitable apportionment and/or commerce clause limitations on a state’s right to protect intrastate groundwater resources.
Tipo: Journal Article Palavras-chave: Water planning; Equitable apportionment; Groundwater management; State's rights to control resources; Agribusiness; Equitable apportionment.
Ano: 1993 URL: http://purl.umn.edu/62332
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National Conferencs on Water, Food Security and Climate Change in Sri Lanka, Volume 3; Proceeding of the Policies, Institutions and Data Needs for Water Management, BMICH, Colomba June 9-11, 2009 AgEcon
Tipo: Presentation Palavras-chave: Water resource management; Water governance; Organizations; Institutions; Water policy; Water rights; Irrigation management; Participatory management; Farmers organizations; Capacity building; Irrigation efficiency; Water demand; Water supply; Irrigation schemes; Operations; Maintenance; Groundwater management; Models; Economic analysis; Food security; Farm Management; Financial Economics; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Industrial Organization; Institutional and Behavioral Economics; Political Economy; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/118415
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Planning groundwater use for sustainable rural development AgEcon
International Water Management Institute (IWMI).
Groundwater use is rapidly increasing in Sri Lanka, bringing several benefits to small farmers—by allowing them to grow more crops, minimize the impact of droughts, and profit from selling high-value produce. But how can this be sustained? Lessons learned from other countries with longer histories of groundwater use can help policymakers, planners, and development organizations avoid the pitfalls and dangers of indiscriminate use, and capture the benefits that groundwater can bring.
Tipo: Report Palavras-chave: Groundwater management; Rural development; Wells; Aquifers; Surface water; Conjunctive use; Irrigation water; Water pollution; Crop Production/Industries; Farm Management.
Ano: 2005 URL: http://purl.umn.edu/113019
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Reducing poverty through integrated management of groundwater and surface water AgEcon
International Water Management Institute (IWMI); Global Water Partnership (GWP Advisory Center).
The full poverty-fighting potential of existing irrigation schemes is not being realized—largely because of inequitable water distribution and unsustainable land and water management practices. An integrated water resources management (IWRM) approach reveals opportunities to reduce poverty and improve overall agricultural productivity and sustainability in these systems. Research in India and Pakistan has highlighted one such opportunity—integrated management of surface water and groundwater—that has great potential for water-short systems with variable groundwater resources. By considering groundwater availability and quality when allocating surface water, water managers could improve the situation of millions of poor farmers with inadequate access to...
Tipo: Report Palavras-chave: Groundwater management; Irrigation management; Domestic water; Poverty; Farm Management; Food Security and Poverty; Productivity Analysis.
Ano: 2005 URL: http://purl.umn.edu/113059
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Social choice and groundwater management: application of the uniform rule Ciencia e Investigación Agraria
Martinez,Yolanda; Esteban,Encarna.
Y. Martinez, and E. Esteban. 2014. Social choice and groundwater management: application of the uniform rule. Cien. Inv. Agr. 41(2): 153-162. In recent decades, the protection of groundwater resources has become a key element in environmental policies around the world as the control of groundwater extraction is necessary to avoid groundwater depletion. This paper proposes a system to improve the allocation of groundwater resources based on the theory of social choice. We propose the implementation of the uniform rule as a mechanism to achieve more efficient groundwater allocation. The uniform rule combines individual preferences to reach collective decisions and respects the anonymity between agents. Additionally, the rule is Pareto efficient and...
Tipo: Journal article Palavras-chave: Groundwater management; Market rule; Social choice rule; Proportional rule; Strategy-proofness; Uniform rule; Western La Mancha aquifer.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000200002
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Stakeholder involvement in water management using Object-oriented Bayesian networks and economic models in Spain. AgEcon
Carmona, Gema; Varela-Ortega, Consuelo; Bromley, John.
The Upper Guadiana basin, in Spain, presents important conflicts between the agricultural sector and the environment due to their competence for water resources. The high development of irrigation has led to the over-exploitation of the aquifers, which are the main source of water in the area, and to the loss of wetlands of high ecological value. The River Basin Authority (RBA) has recently designed a new water management plan which included a group of measures aimed at reducing water consumption. Our objective is the development, with the active participation of the stakeholders, of a decision support system composed of an economic model and an object-oriented Bayesian network, used to evaluate the trade-off between agricultural economy and the...
Tipo: Conference Paper or Presentation Palavras-chave: Bayesian networks; Groundwater management; Stakeholder participation; Environmental Economics and Policy; Farm Management; Land Economics/Use; Resource /Energy Economics and Policy; Q15; Q25; Q56.
Ano: 2009 URL: http://purl.umn.edu/49897
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Strategic Analyses of the National River Linking Project (NRLP) of India Series 5; Proceedings of the Second National Workshop on Strategies Issues in Indian Irrigation AgEcon
International Water Management Institute (IWMI).
Tipo: Presentation Palavras-chave: Irrigation management; Institutional reform; Surface irrigation; River basin management; Water transfer; Investment; Irrigation programs; Policy; Water users associations; Groundwater management; Groundwater recharge; Water supply; Drinking water; Watershed management; Crops; Crop Production/Industries; Financial Economics; Institutional and Behavioral Economics; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/118413
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Synthesis of IWMI work in Nepal AgEcon
Pant, Dhruba; Samad, Madar.
The International Water Management Institute (IWMI) has been working in Nepal since 1986 with the objective of undertaking research in water management and to strengthen the research capabilities of concerned government agencies. The research helped to develop appropriate mechanisms for providing support to Farmer-Managed Irrigation Systems (FMIS) and the initiation of participatory irrigation management (PIM). The river basin studies helped policy formulation for integrated planning and management of water resources besides the methodological contribution through the development of appropriate tools for water management studies. It also contributed to enhancing the capabilities of agency officials and local researchers through their involvement in...
Tipo: Working or Discussion Paper Palavras-chave: Irrigation management; Irrigation systems; Privatization; Farmer managed irrigation systems; River basin management; Water users associations; Policy; Groundwater management; Gender; Women; Capacity building; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Labor and Human Capital; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/95762
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The challenges of integrated river basin management in India: issues in transferring successful river basin management models to the developing world AgEcon
International Water Management Institute, IWMI-TATA Water Policy Program.
The problems that river basin institutions in the developed world successfully address—such as pollution, sediment buildup in rivers and the degradation of wetlands—are not the top priorities for Indian policy makers and people. The items that do top Indian agendas—providing access to water for drinking and growing food, eradicating poverty, and stopping groundwater overexploitation—are either unresolved in the developed world or have become irrelevant due to economic development. This does not mean that India and other developing countries cannot learn valuable lessons from models for Integrated River Basin Management. Loosely structured River Basin Organizations, such as Southeast Asia’s Mekong Commission, can contribute to basin welfare by serving as a...
Tipo: Report Palavras-chave: River basins; Hydrology; Water management; Water harvesting; Groundwater management; Drip irrigation; Institutional development; Environmental Economics and Policy; Institutional and Behavioral Economics.
Ano: 2002 URL: http://purl.umn.edu/113064
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The Economics of Commonly Owned Groundwater When User Demand Is Perfectly Inelastic AgEcon
Wang, Chenggang; Segarra, Eduardo.
This paper provides a theoretical analysis of the common-pool resource dilemma in extracting nonrenewable groundwater resources when water demand is perfectly inelastic. It complements the existing theory of groundwater use, which assumes away the possibility of demand perfect inelasticity. Under perfectly inelastic water demand, the common-pool resource dilemma is by-passed if groundwater users are equally productive in water use. If they are not, a new type of inefficiency can arise due to the lack of a rationing mechanism on the basis of productivity. Our analysis suggests that groundwater management research should pay more attention to water demand elasticity and productivity heterogeneity.
Tipo: Journal Article Palavras-chave: Common-pool resources; Groundwater extraction; Groundwater management; Groundwater use; Irrigation water demand; Optimal control; Pumping externality; Water demand elasticity; Resource /Energy Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/105533
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Tubewell transfer in Gujarat: A study of the GWRDC approach AgEcon
Mukherji, Aditi; Kishore, Avinash.
In India public (government) tubewells were built with the intention of providing irrigation to all categories of farmers in a fair, equitable and affordable manner. However, most public tubewell programs across India have failed on all these counts. Efforts to transfer their management to water users too have met with little success. Nonetheless, the Gujarat Water Resources Development Corporation (GWRDC)-a state-owned public company-has achieved rare success in tubewell transfer by handing over management of around 60 percent of public tubewells in the Gujarat state to user groups. This study tries to identify the factors that helped in accelerating the transfer process and evaluate the performance of transferred tubewells against those owned by...
Tipo: Report Palavras-chave: Tube wells; Privatization; Groundwater management; Economic aspects; Operations; Maintenance; Equity; Farmers' attitudes; Policy; Agribusiness; Community/Rural/Urban Development; Consumer/Household Economics; Crop Production/Industries; Farm Management.
Ano: 2003 URL: http://purl.umn.edu/44559
Registros recuperados: 21
Primeira ... 12 ... Última
 

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