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A model for Evaporation and Drainage investigations at Ground of Ordinary Rainfed-areas

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  • Aydin, Mehmet

Abstract

Quantification of water losses through evaporation and drainage from bare soils in arid and semi-arid regions is very important for an effective management strategy to conserve soil water. In this study, a model for Evaporation and Drainage investigations at Ground of Ordinary Rainfed-areas (hereafter E-DiGOR) is presented. Daily potential evaporation (Ep) from bare soils was calculated using the Penman–Monteith equation with a surface resistance of zero. Actual soil evaporation (Ea) was computed according to Aydin et al. [Aydin, M., Yang, S.L., Kurt, N., Yano, T., 2005. Test of a simple model for estimating evaporation from bare soils in different environments. Ecol. Model. 182 (1), 91–105; Aydin, M., Yano, T., Evrendilek, F., Uygur, V., 2008. Implications of climate change for evaporation from bare soils in a Mediterranean environment. Environ. Monit. Assess. 140, 123–130]. Deep drainage (D) was simply calculated by the mass balance, taking field capacity into account. In order to test the performance of the model mainly for drainage estimations, a micro-lysimeter-experiment was carried out under field conditions. The experimental terrain was nearly flat, with no appreciable slope. Estimated and measured water balance components such as actual evaporation (R2=91.4%; P<0.01), drainage (R2=88.5%; P<0.01) and soil water storage (R2=89.7%; P<0.01) were in agreement. This agreement supported the model hypothesis, thus rendering the model useful in estimating soil evaporation, drainage and water storage in an interactive way with a few parameters.

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  • Aydin, Mehmet, 2008. "A model for Evaporation and Drainage investigations at Ground of Ordinary Rainfed-areas," Ecological Modelling, Elsevier, vol. 217(1), pages 148-156.
    • Handle: RePEc:eee:ecomod:v:217:y:2008:i:1:p:148-156
    DOI: 10.1016/j.ecolmodel.2008.06.015
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    References listed on IDEAS

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    1. Kite, G. & Droogers, P. & Murray-Rust, H. & de Voogt, K., 2001. "Modeling scenarios for water allocation in the Gediz Basin, Turkey," IWMI Research Reports H027645, International Water Management Institute.
    2. Li Yang, Sheng & Yano, Tomohisa & Aydin, Mehmet & Kitamura, Yoshinobu & Takeuchi, Shin-ichi, 2002. "Short term effects of saline irrigation on evapotranspiration from lysimeter-grown citrus trees," Agricultural Water Management, Elsevier, vol. 56(2), pages 131-141, July.
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    Cited by:

    1. Escarabajal-Henarejos, D. & Fernández-Pacheco, D.G. & Molina-Martínez, J.M. & Martínez-Molina, L. & Ruiz-Canales, A., 2015. "Selection of device to determine temperature gradients for estimating evapotranspiration using energy balance method," Agricultural Water Management, Elsevier, vol. 151(C), pages 136-147.
    2. Bellot, Juan & Chirino, Esteban, 2013. "Hydrobal: An eco-hydrological modelling approach for assessing water balances in different vegetation types in semi-arid areas," Ecological Modelling, Elsevier, vol. 266(C), pages 30-41.

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