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Registros recuperados: 58 | |
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NASCIMENTO, W.; MARTORANO, L. G.; ARAÚJO, L. B. de; SOUSA, J. T. R. de; DIAS, C. T. dos S.. |
Description of the subject. Since the beginning of the twenty-first century, soybean cultivation areas have been expanding in the Legal Amazon. Among the factors that contribute to the process of expansion of cultivation of grains in the Amazon, favorable climate conditions are one of the most important, and these include high rainfall indices and good thermal regimes during the cultivation period. Objectives. In this context, the objective of this study was to describe responses of soybean production as a function of climate variables, considering data from an important grain production center in the Amazon. Method. Principal Component Analysis (PCA) was used including the following response variables: rainfall (R), air temperature (T), real... |
Tipo: Artigo de periódico |
Palavras-chave: Glycine Max; Evapotranspiração; Abastecimento de Água; Evapotranspiration; Water supply; Amazonia. |
Ano: 2023 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1154133 |
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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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ARAUJO, L. F. de. |
O cenário futuro de mudanças climáticas, principalmente no semiárido nordestino, incluindo a elevação da temperatura e da concentração de CO2, diminuição da disponibilidade hídrica e desertificação, ocasionando salinização da água e do solo, poderá causar impacto no manejo do meloeiro. Dessa forma, objetiva-se avaliar o crescimento inicial de plantas de meloeiro frente às mudanças na concentração de CO2, temperatura, salinidade e lâminas de irrigação, visando verificar os impactos da mudança climática sobre a cultura, como também elucidar mecanismos de tolerância, de forma a auxiliar na obtenção de materiais mais produtivos. Dois experimentos foram realizados na Embrapa Semiárido (Petrolina ? PE) e outros dois foram conduzidos na Embrapa Agroindústria... |
Tipo: Teses |
Palavras-chave: Elevada concentração de dióxido de carbono; Altas temperaturas; Melão; Salinidade; Melons; Water supply; Salinity. |
Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105112 |
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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 |
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Kelly-Quinn, Mary; School of Biology & Environmental Science, University College Dublin; mary.kelly-quinn@ucd.ie; Blacklocke, Sean; School of Civil, Structural & Environmental Engineering, University College Dublin; sean-blacklocke@sean-blacklocke.com; Bruen, Michael; School of Civil, Structural & Environmental Engineering, University College Dublin; michael.bruen@ucd.ie; Earle, Ray; International Water Association; rayearlewater@gmail.com; O'Neill, Eoin; School of Geography, Planning & Environmental Policy, University College Dublin; eoin.oneill@ucd.ie; O'Sullivan, John; School of Civil, Structural & Environmental Engineering, University College Dublin; jj.osullivan@ucd.ie; Purcell, Patrick; School of Civil, Structural & Environmental Engineering, University College Dublin; pj.purcell@ucd.ie. |
Tipo: Peer-Reviewed Reports |
Palavras-chave: Demand management; Dublin; Full cost recovery; Governance; Water supply. |
Ano: 2014 |
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Roberts, Lisa A.; Leitch, Jay A.. |
The objective of this study was to estimate some economic values of Mud Lake, a managed, lacustrine wetland on the Minnesota-South Dakota border. Several outputs of Mud Lake were identified and an economic value was estimated for each. Flood control was valued at approximately $440 per acre, based on dollar damages prevented; water supply, using public utility revenues, was valued at $94 per acre; fish/wildlife habitat, recreation, and aesthetics were valued at about $21 per acre using the Contingent Valuation Method; and corrective expenditures were used to evaluate water quality at a negative per acre value of $180. When capitalized at 6 percent, the estimated total annual value of these four outputs is $6,250 per acre. These values can assist... |
Tipo: Working or Discussion Paper |
Palavras-chave: Wetland; Outputs; Economic valuation; Flood control; Water supply; Water quality; Recreation; Aesthetics; Fish/wildlife habitat; Contingent valuation method; Resource /Energy Economics and Policy; Land Economics/Use. |
Ano: 1997 |
URL: http://purl.umn.edu/23406 |
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FURLAN, G.; CABRAL, O. M. R.; LACLAU, J.-P.; PACKER, A. P.; MAXIMILIANO, V. C. B.; MOREIRA, M.. |
Resumo: Neste trabalho são apresentados os resultados da alocação do carbono (C) recentemente assimilado em árvores de eucalipto submetidas a diferentes tratamentos com relação à disponibilidade hídrica (chuva normal e exclusão de 33%) e fertilização de potássio (0 e 4,5 Kmol ha-1 na forma de KCl), utilizando-se o método da marcação com 13C-CO2 (13C pulse labelling). Observou-se que o aumento da velocidade de crescimento das árvores aumenta a partição do C fixado na madeira e a implicação prática desta constatação, considerando-se a produção de uma quantidade fixa de madeira, é que o consumo de recursos será menor maximizando-se a produtividade numa pequena área, ao contrário de plantações pouco produtivas ocupando áreas maiores. Abstract: This work... |
Tipo: Separatas |
Palavras-chave: Disponibilidade hídrica; Carbono; Eucalipto; Disponibilidade de água; Potássio; Carbon; Eucalyptus; Water supply; Potassium. |
Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1006550 |
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FERREIRA, R. S.; VEIGA, H. P.; SANTOS, R. G. B. dos; SAIA, A.; RODRIGUES, S. C.; BEZERRA, A. F. M.; HERMES, L. C.; MOURA, A.; CUNHA, L. H.. |
Abstract: The Programa Água Doce-PAD(in English: Fresh Water Program) promoted by the Brazilian Federal Government under the coordinationof the Environmental Ministry, seeks to promote sustainable use of groundwater resources and provide potable water for human consumption in areas withcriticalwater scarcity in the Brazilian Semiarid region, through the use of the Reverse Osmosis Technique. The Program is guided by the following principles: community empowerment, environmental sustainability and technicalcapacity building. The methodology that led the Program to becomea success case was conceived in 2003, through a participatory process with the contribution of public Brazilian institutions such as: Federal University of Campina Grande-UFCG (Social... |
Tipo: Separatas |
Palavras-chave: Abastecimento de água; Água salobra; Dessalinização; Comunidade rural; Brackish water; Desalination; Water supply; Rural communities; Issues and policy. |
Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085693 |
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Registros recuperados: 58 | |
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