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000897475 1001_ $$0P:(DE-HGF)0$$aHao, Shirui$$b0$$eCorresponding author
000897475 245__ $$aPerformance of a wheat yield prediction model and factors influencing the performance: A review and meta-analysis
000897475 260__ $$aAmsterdam [u.a.]$$bElsevier$$c2021
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000897475 520__ $$aCONTEXTProcess-based crop models provide ways to predict crop growth, evaluate environmental impacts on crops, test various crop management options, and guide crop breeding. They can be used to explore options for mitigating climate change impacts when combined with climate projections and explore mitigation of environmental impacts of production. The Agricultural Production Systems SIMulator (APSIM) is a widely adopted crop model that offers modules for simulation of various crops, soil processes, climate, and grazing within a modelling system that enables robust addition of new components.OBJECTIVEThis study uses APSIM Classic-Wheat as an example to examine yield prediction accuracy of biophysically based crop yield modelling and to analyse the factors influencing the model performance.METHODSWe analysed yield prediction results of APSIM Classic-Wheat from 76 published studies across thirteen countries on four continents. In addition, a meta-database of modelled and observed yields from 30 studies was established and used to identify factors that influence yield prediction uncertainty.RESULTS AND CONCLUSIONSOur analysis indicates that, with site-specific calibration, APSIM predicts yield with a root mean squared error (RMSE) smaller than 1 t/ha and a normalised RMSE (NRMSE) of about 28%, across a wide range of environmental conditions for independent evaluation periods. The results show increasing errors in yield with limited modelling information and adverse environmental conditions. Using soil hydraulic parameters derived from site-specific measurements and/or tuning cultivar parameters improves yield prediction accuracy: RMSE decreases from 1.25 t/ha to 0.64 t/ha and NRMSE from 32% to 14%. Lower model accuracy was found where APSIM overestimates yield under high water deficit condition and when it underestimates yield under nitrogen limitation. APSIM severely over-predicts yield when some abiotic stresses such as heatwaves and frost affect the crop growth.
000897475 536__ $$0G:(DE-HGF)POF4-2173$$a2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)$$cPOF4-217$$fPOF IV$$x0
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000897475 7001_ $$0P:(DE-HGF)0$$aRyu, Dongryeol$$b1
000897475 7001_ $$0P:(DE-HGF)0$$aWestern, Andrew$$b2
000897475 7001_ $$0P:(DE-HGF)0$$aPerry, Eileen$$b3
000897475 7001_ $$0P:(DE-Juel1)129440$$aBogena, Heye$$b4$$ufzj
000897475 7001_ $$0P:(DE-Juel1)138662$$aHendricks-Franssen, Harrie-Jan$$b5$$ufzj
000897475 773__ $$0PERI:(DE-600)1495825-9$$a10.1016/j.agsy.2021.103278$$gVol. 194, p. 103278 -$$p103278 -$$tAgricultural systems$$v194$$x0308-521X$$y2021
000897475 8564_ $$uhttps://juser.fz-juelich.de/record/897475/files/AGSY-D-21-00531.pdf$$yPublished on 2021-09-22. Available in OpenAccess from 2023-09-22.
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