Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 9
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
An evaluation of the economic impact of Climate Change through a three-stages Discrete Stochastic Programming model AgEcon
Cortignani, Raffaele; Dono, Gabriele; Doro, Luca; Ledda, Luigi; Mazzapicchio, Graziano.
The climate change in the agricultural sector acting on multiple weather variables at different times of the various crop cycles. In several cases by changing the mean level of variables (rainfall, temperature, etc..), in other cases by changing the distribution of events. This work provides an evaluation of the economic impact due to changes in multiple events, and to the associated uncertainty. For this reason, a classical two-stage stochastic programming model was extend into a three-stages model. The model is specified for an area of Sardinia, and examines the impact of climate change on rainfall and hence on the availability of water for agriculture, and on maximum temperatures and, therefore, on the requirements of some irrigated crops relevant to...
Tipo: Conference Paper or Presentation Palavras-chave: Discrete Stochastic Programming Model; Climate change; Water availability; Irrigation requirements; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Research Methods/ Statistical Methods.
Ano: 2010 URL: http://purl.umn.edu/109317
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
Estimating water requirements and water storage requirements for farms, community and backyard gardens, and for large irrigation systems: A user manual for PLANWAT Version 1.2.3b and a CD-ROM to install this program AgEcon
van Heerden, Pieter S..
Tipo: Working or Discussion Paper Palavras-chave: Computer models; Computer software; Irrigation requirements; Estimation; Irrigated farming; Irrigation management; Water harvesting; Water requirements; Water storage; Production Economics; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/92657
Imagem não selecionada

Imprime registro no formato completo
Hydrological and environmental issues of interbasin water transfers in India: a case of the Krishna River Basin AgEcon
Smakhtin, Vladimir U.; Gamage, Nilantha; Bharati, Luna.
Tipo: Report Palavras-chave: River basins; Water transfer; Environmental effects; Dams; Reservoirs; Water resources development; Irrigation requirements; Case studies; India; Krishna River; Godavari River; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/53065
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
Possible Impacts of Climate Change on Mediterranean Irrigated Farming Systems AgEcon
Dono, Gabriele; Cortignani, Raffaele; Doro, Luca; Ledda, Luigi; Roggero, PierPaolo; Giraldo, Luca; Severini, Simone.
In the agricultural sector, climate change (CC) affects multiple weather variables at different stages of crop cycles. CC may influence the mean level or affect the distribution of events (e.g., rainfall, temperature). This work evaluates the economic impact of CC-related changes in multiple climatic components, and the resulting uncertainty. For this purpose, a three-stage discrete stochastic programming model is used to represents farm sector of an irrigated area of Italy and to examine the influence of CC on rainfall and on maximum temperature. These variables affect the availability of water for agriculture and the water requirements of irrigated crops. The states of nature, and their change, are defined more broadly than in previous analyses; this...
Tipo: Conference Paper or Presentation Palavras-chave: Discrete stochastic programming model; Climate change; Water availability; Irrigation requirements; Farm Management; Resource /Energy Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/114436
Imagem não selecionada

Imprime registro no formato completo
The transformation of irrigation boards into water user associations in South Africa: Case studies of the Lower Olifants, Great Letaba and Vaalharts water user associations. Volume 1 AgEcon
Seshoka, Jetrick; de Lange, Willem J.; Faysse, Nicolas.
Tipo: Working or Discussion Paper Palavras-chave: Water users’ associations; Organizational development; Institutional development; River basins; Water use; Water quality; Canals; Irrigation water; Domestic water; Water resource management; Water requirements; Irrigation requirements; Water allocation; Dams; Irrigation programs; Farmers; Case studies; Farm Management; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/92655
Imagem não selecionada

Imprime registro no formato completo
Trees and water: smallholder agroforestry on irrigated lands in Northern India AgEcon
Zomer, Robert J.; Bossio, Deborah A.; Trabucco, Antonio; Yuanjie, Li; Gupta, Diwan C.; Singh, Virendra P..
Trees are increasingly grown on-farm to supply wood and biomass needs within developing countries. Over the last several decades, within the irrigated rice-wheat growing lands of northern India, fast-growing poplar trees have been planted on tens of thousands of small farms. Recent debate regarding afforestation has raised the issue that water use is often increased when trees are planted. This ongoing debate focuses primarily on afforestation or reforestation of upland and rain-fed agricultural areas, and off-site impacts such as reduced streamflow. Adoption of poplar agroforestry in northern India, in contrast, is occurring in areas where land and water are already intensively used and managed for agricultural production. This study based on farmer...
Tipo: Report Palavras-chave: Trees; Populus deltoids; Agroforestry; Afforestation; Reforestation; Models; Water use; Water balance; Evapotranspiration; Precipitation; Remote sensing; Irrigation requirements; India; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/53067
Imagem não selecionada

Imprime registro no formato completo
Water productivity in the Syr-Darya River Basin AgEcon
Murray-Rust, Hammond; Abdullaev, Iskandar; Ul Hassan, Mehmood; Horinkova, Vilma.
This report analyses water productivity and water-saving initiatives in the Syr-Darya river basin in Central Asia and presents institutional and political aspects of water management in the basin.
Tipo: Report Palavras-chave: Water resource management; Productivity; Irrigation effects; Institutional development; Water allocation; Irrigated farming; Irrigation canals; Water demand; Irrigation requirements; Water distribution; Water delivery; Crop yield; River basins; Water conservation; Central Asia; Aral Sea; Syr-Darya; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/61097
Registros recuperados: 9
Primeira ... 1 ... 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