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Integrating satellite-based evapotranspiration with simulation models for irrigation management at the scheme level
http://hdl.handle.net/10458/1488
http://hdl.handle.net/10458/1488c5e266ad-3531-4d40-928f-79942c2c070a
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Draft Figures Santos et al., 2008.pdf (258.2 kB)
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Draft Santos et al., 2008.pdf (105.3 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2008-04-02 | |||||
| タイトル | ||||||
| タイトル | Integrating satellite-based evapotranspiration with simulation models for irrigation management at the scheme level | |||||
| 言語 | en | |||||
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| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
Santos, C.
× Santos, C.× Lorite, I. J.× Tasumi, M.× Allen, R. G.× Fereres, E |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Improvements in irrigation management are urgently needed in regions where water resources for irrigation are being depleted. This paper combines a water balance model with satellite-based remote-sensing estimates of evapotranspiration （ET） to provide accurate irrigation scheduling guidelines for individual fields. The satellite derived ET was used in the daily soil water balance model to improve accuracy of field by field ET demands and subsequent field-scale irrigation schedules. The combination of satellite-based ET with daily soil water balance incorporates the advantages of satellite remote-sensing and daily calculation time steps, namely, high spatial resolution and high temporal resolution. The procedure was applied to Genil–Cabra Irrigation Scheme of Spain, where irrigation water supply is often limited by regional drought. Compared with traditional applications of water balance models （i.e. without the satellite-based ET）, the combined procedure provided significant improvements in irrigation schedules for both the average condition and when considering field-to-field variability. A 24% reduction in water use was estimated for cotton if the improved irrigation schedules were followed. Irrigation efficiency calculated using satellite-based ET and actual applied irrigation water helped to identify specific agricultural fields experiencing problems in water management, as well as to estimate general irrigation efficiencies of the scheme by irrigation and crop type. Estimation of field irrigation efficiency ranged from 0.72 for cotton to 0.90 for sugar beet. |
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| 言語 | en | |||||
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| 内容記述タイプ | Other | |||||
| 内容記述 | The original publication is available at www.springerlink.com | |||||
| 言語 | en | |||||
| 書誌情報 |
en : Irrigation Science 巻 26, 号 3, p. 277-288, 発行日 2008 |
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| 出版者 | Springer | |||||
| 言語 | en | |||||
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| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0342-7188 | |||||
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| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00236503 | |||||
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| 出版タイプ | AM | |||||
