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  1. 農学部
  1. 農学部
  2. 学術雑誌掲載論文 (農学部)

Integrating satellite-based evapotranspiration with simulation models for irrigation management at the scheme level

http://hdl.handle.net/10458/1488
http://hdl.handle.net/10458/1488
ac91b53c-f420-471d-8514-0baa2dcb8161
名前 / ファイル ライセンス アクション
draft_figures_santos_et_al_2008.pdf Draft Figures Santos et al., 2008.pdf (258.2 kB)
draft_santos_et_al_2008.pdf Draft Santos et al., 2008.pdf (105.3 kB)
Item type 学術雑誌論文 / Journal Article(1)
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
言語
言語 eng
資源タイプ
資源タイプ journal article
著者 Santos, C.

× Santos, C.

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en Santos, C.

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Lorite, I. J.

× Lorite, I. J.

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en Lorite, I. J.

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Tasumi, M.

× Tasumi, M.

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en Tasumi, M.

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Allen, R. G.

× Allen, R. G.

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en Allen, R. G.

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Fereres, E

× Fereres, E

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en 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.
言語 en
内容記述
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
出版者
出版者 Springer
言語 en
ISSN
収録物識別子タイプ ISSN
収録物識別子 0342-7188
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AN00236503
著者版フラグ
出版タイプ AM
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