Evaluation of the FAO Aqua Crop model for winter wheat on the North China Plain under deficit irrigation from field experiment to regional yield simulation
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2014
Authors
Iqbal, M.AnjumShen, Yanjun
Stričević, Ružica
Pei, Hongwei
Sun, Hongyoung
Amiri, Ebrahim
Penas, Angel
del Rio, Sara
Article (Published version)
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Winter wheat is the main crop on the North China Plain (NCP), and in this region the most limiting factor for the crop is water. The objective of this study was to adapt and test the ability of the FAO-developed AquaCrop model (v3.1) to simulate winter wheat grain yield, biomass, actual evapotranspiration (ETa) and total soil water content (0-120 cm). Field experiments were conducted under deficit irrigation at the Luancheng Agro-ecosystem station (NCP) in 1998-2001, and the AquaCrop model was calibrated with treatment D(1999-2000); the rest of the data was used for validation of the model. The AquaCrop model was revalidated with data on measured grain yield from the experimental station for 1990-2010, considering actual field conditions. The second revalidation was done with the statistical grain yield for 1995-2010 in the study region. For the model validation, the significant differences between simulated and observed grain yield, biomass and ET, were in the order of: rainfed treatm...ent> well-watered treatment> moderate water stress. Total soil water simulated by AquaCrop tends to follow closely the trend in the measured data, but with slight underestimations for irrigated treatments and significant overestimations for rainfed treatments. In general, errors in the model's evaluation such as RMSE and Willmot's d statistics were for grain yield (0.58 Mg ha(-1), 0.92), biomass (0.87 Mg ha(-1), 0.95), ETa (33.2 mm, 0.93) and soil water content (24.5-37.6 mm, 0.85-0.90). The overall results based on extensive validation and revalidation showed that AquaCrop is a valid model and can be used with a reliable degree of accuracy for optimizing winter wheat grain yield production and water requirement on the NCP.
Keywords:
AquaCrop model / Winter wheat / Deficit irrigation / North China PlainSource:
Agricultural Water Management, 2014, 135, 61-72Publisher:
- Elsevier, Amsterdam
Funding / projects:
- Young International Scientists Fellowship to Muhammad Anjum lqbal from the Chinese Academy of Sciences (CAS), China
- Knowledge Innovation ProjectKnowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-EW-J-5]
DOI: 10.1016/j.agwat.2013.12.012
ISSN: 0378-3774
WoS: 000332053700007
Scopus: 2-s2.0-84892645425
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Poljoprivredni fakultetTY - JOUR AU - Iqbal, M.Anjum AU - Shen, Yanjun AU - Stričević, Ružica AU - Pei, Hongwei AU - Sun, Hongyoung AU - Amiri, Ebrahim AU - Penas, Angel AU - del Rio, Sara PY - 2014 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/3498 AB - Winter wheat is the main crop on the North China Plain (NCP), and in this region the most limiting factor for the crop is water. The objective of this study was to adapt and test the ability of the FAO-developed AquaCrop model (v3.1) to simulate winter wheat grain yield, biomass, actual evapotranspiration (ETa) and total soil water content (0-120 cm). Field experiments were conducted under deficit irrigation at the Luancheng Agro-ecosystem station (NCP) in 1998-2001, and the AquaCrop model was calibrated with treatment D(1999-2000); the rest of the data was used for validation of the model. The AquaCrop model was revalidated with data on measured grain yield from the experimental station for 1990-2010, considering actual field conditions. The second revalidation was done with the statistical grain yield for 1995-2010 in the study region. For the model validation, the significant differences between simulated and observed grain yield, biomass and ET, were in the order of: rainfed treatment> well-watered treatment> moderate water stress. Total soil water simulated by AquaCrop tends to follow closely the trend in the measured data, but with slight underestimations for irrigated treatments and significant overestimations for rainfed treatments. In general, errors in the model's evaluation such as RMSE and Willmot's d statistics were for grain yield (0.58 Mg ha(-1), 0.92), biomass (0.87 Mg ha(-1), 0.95), ETa (33.2 mm, 0.93) and soil water content (24.5-37.6 mm, 0.85-0.90). The overall results based on extensive validation and revalidation showed that AquaCrop is a valid model and can be used with a reliable degree of accuracy for optimizing winter wheat grain yield production and water requirement on the NCP. PB - Elsevier, Amsterdam T2 - Agricultural Water Management T1 - Evaluation of the FAO Aqua Crop model for winter wheat on the North China Plain under deficit irrigation from field experiment to regional yield simulation EP - 72 SP - 61 VL - 135 DO - 10.1016/j.agwat.2013.12.012 ER -
@article{ author = "Iqbal, M.Anjum and Shen, Yanjun and Stričević, Ružica and Pei, Hongwei and Sun, Hongyoung and Amiri, Ebrahim and Penas, Angel and del Rio, Sara", year = "2014", abstract = "Winter wheat is the main crop on the North China Plain (NCP), and in this region the most limiting factor for the crop is water. The objective of this study was to adapt and test the ability of the FAO-developed AquaCrop model (v3.1) to simulate winter wheat grain yield, biomass, actual evapotranspiration (ETa) and total soil water content (0-120 cm). Field experiments were conducted under deficit irrigation at the Luancheng Agro-ecosystem station (NCP) in 1998-2001, and the AquaCrop model was calibrated with treatment D(1999-2000); the rest of the data was used for validation of the model. The AquaCrop model was revalidated with data on measured grain yield from the experimental station for 1990-2010, considering actual field conditions. The second revalidation was done with the statistical grain yield for 1995-2010 in the study region. For the model validation, the significant differences between simulated and observed grain yield, biomass and ET, were in the order of: rainfed treatment> well-watered treatment> moderate water stress. Total soil water simulated by AquaCrop tends to follow closely the trend in the measured data, but with slight underestimations for irrigated treatments and significant overestimations for rainfed treatments. In general, errors in the model's evaluation such as RMSE and Willmot's d statistics were for grain yield (0.58 Mg ha(-1), 0.92), biomass (0.87 Mg ha(-1), 0.95), ETa (33.2 mm, 0.93) and soil water content (24.5-37.6 mm, 0.85-0.90). The overall results based on extensive validation and revalidation showed that AquaCrop is a valid model and can be used with a reliable degree of accuracy for optimizing winter wheat grain yield production and water requirement on the NCP.", publisher = "Elsevier, Amsterdam", journal = "Agricultural Water Management", title = "Evaluation of the FAO Aqua Crop model for winter wheat on the North China Plain under deficit irrigation from field experiment to regional yield simulation", pages = "72-61", volume = "135", doi = "10.1016/j.agwat.2013.12.012" }
Iqbal, M.Anjum, Shen, Y., Stričević, R., Pei, H., Sun, H., Amiri, E., Penas, A.,& del Rio, S.. (2014). Evaluation of the FAO Aqua Crop model for winter wheat on the North China Plain under deficit irrigation from field experiment to regional yield simulation. in Agricultural Water Management Elsevier, Amsterdam., 135, 61-72. https://doi.org/10.1016/j.agwat.2013.12.012
Iqbal M, Shen Y, Stričević R, Pei H, Sun H, Amiri E, Penas A, del Rio S. Evaluation of the FAO Aqua Crop model for winter wheat on the North China Plain under deficit irrigation from field experiment to regional yield simulation. in Agricultural Water Management. 2014;135:61-72. doi:10.1016/j.agwat.2013.12.012 .
Iqbal, M.Anjum, Shen, Yanjun, Stričević, Ružica, Pei, Hongwei, Sun, Hongyoung, Amiri, Ebrahim, Penas, Angel, del Rio, Sara, "Evaluation of the FAO Aqua Crop model for winter wheat on the North China Plain under deficit irrigation from field experiment to regional yield simulation" in Agricultural Water Management, 135 (2014):61-72, https://doi.org/10.1016/j.agwat.2013.12.012 . .