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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
23/06/1997 |
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Data da última atualização: |
09/07/2003 |
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Autoria: |
PERRY, C. J. |
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Título: |
The IIMI Water balance framework: a model for project level analysis. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Colombo: IIMI, 1996. |
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Páginas: |
18 p. |
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Série: |
(IIMI. Research Report, 5). |
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ISBN: |
92-9090-331-7 |
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Idioma: |
Inglês
Português |
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Conteúdo: |
The water balance for an irrigation project is a complex set of inflows, outflows, consumptive use, and recycling of water. When changes in cropping patterns, management regimes, or infrastructure are made, they distrub existing balances. The water balance must be fully understood to properly anticipate the chain of impacts resulting from interventions such as canal lining. The IIMI water balance framework (IWBF), which is in Excel, is an easy-to-use computer model for analyzing the utilization of water from surface irrgation and rainfall within an irrigation project. The framework allows explicti definition of losses to seepage, operational losses, and efficiency of field application. Recycling of water through pumping from drains and from groundwater is allowed, and the resulting water balance is presented, showing flows to groundwater, outfalls from drains, and consumptive use of crops and other evaporative uses. the model permits a simple validity check of basic assumptions to ensure approximate internal consistency. Where such consistency cannot be demonstrated, either through this model or a more complex formulation, the impact of changes in management or infrastructure cannot be predicted. The data on which the proposed water balance model is based are often reasonably well known or assumed to be known. Usually, losses in canals and watercourses have been measured, and amounts of rainfall and effective rainfall, water use by crops, and the volume of pumping from groundwater and drains are also known MenosThe water balance for an irrigation project is a complex set of inflows, outflows, consumptive use, and recycling of water. When changes in cropping patterns, management regimes, or infrastructure are made, they distrub existing balances. The water balance must be fully understood to properly anticipate the chain of impacts resulting from interventions such as canal lining. The IIMI water balance framework (IWBF), which is in Excel, is an easy-to-use computer model for analyzing the utilization of water from surface irrgation and rainfall within an irrigation project. The framework allows explicti definition of losses to seepage, operational losses, and efficiency of field application. Recycling of water through pumping from drains and from groundwater is allowed, and the resulting water balance is presented, showing flows to groundwater, outfalls from drains, and consumptive use of crops and other evaporative uses. the model permits a simple validity check of basic assumptions to ensure approximate internal consistency. Where such consistency cannot be demonstrated, either through this model or a more complex formulation, the impact of changes in management or infrastructure cannot be predicted. The data on which the proposed water balance model is based are often reasonably well known or assumed to be known. Usually, losses in canals and watercourses have been measured, and amounts of rainfall and effective rainfall, water use by crops, and the volume of pumping from grou... Mostrar Tudo |
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Palavras-Chave: |
Analysis; Efficiency; Eficiencia; Programa; Uso; Water use. |
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Thesagro: |
Água; Balanço Hídrico; Irrigação; Manejo. |
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Thesaurus Nal: |
irrigation; water balance. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02232nam a2200289 a 4500
001 1245635
005 2003-07-09
008 1996 bl uuuu u0uu1 u #d
020 $a92-9090-331-7
100 1 $aPERRY, C. J.
245 $aThe IIMI Water balance framework$ba model for project level analysis.
260 $aColombo: IIMI$c1996
300 $a18 p.
490 $a(IIMI. Research Report, 5).
520 $aThe water balance for an irrigation project is a complex set of inflows, outflows, consumptive use, and recycling of water. When changes in cropping patterns, management regimes, or infrastructure are made, they distrub existing balances. The water balance must be fully understood to properly anticipate the chain of impacts resulting from interventions such as canal lining. The IIMI water balance framework (IWBF), which is in Excel, is an easy-to-use computer model for analyzing the utilization of water from surface irrgation and rainfall within an irrigation project. The framework allows explicti definition of losses to seepage, operational losses, and efficiency of field application. Recycling of water through pumping from drains and from groundwater is allowed, and the resulting water balance is presented, showing flows to groundwater, outfalls from drains, and consumptive use of crops and other evaporative uses. the model permits a simple validity check of basic assumptions to ensure approximate internal consistency. Where such consistency cannot be demonstrated, either through this model or a more complex formulation, the impact of changes in management or infrastructure cannot be predicted. The data on which the proposed water balance model is based are often reasonably well known or assumed to be known. Usually, losses in canals and watercourses have been measured, and amounts of rainfall and effective rainfall, water use by crops, and the volume of pumping from groundwater and drains are also known
650 $airrigation
650 $awater balance
650 $aÁgua
650 $aBalanço Hídrico
650 $aIrrigação
650 $aManejo
653 $aAnalysis
653 $aEfficiency
653 $aEficiencia
653 $aPrograma
653 $aUso
653 $aWater use
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Embrapa Agropecuária Oeste (CPAO) |
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