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An architectural model of spring wheat: Evaluation of the effects of population density and shading on model parameterization and performance

Author

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  • Evers, Jochem B.
  • Vos, Jan
  • Fournier, Christian
  • Andrieu, Bruno
  • Chelle, Michaël
  • Struik, Paul C.

Abstract

ADELwheat is an architectural model that describes development of wheat in 3D. This paper analyzes the robustness of the parameterization of ADELwheat for spring wheat cultivars in relation to plant population density and shading. The model was evaluated using data from two spring wheat experiments with three plant population densities and two light regimes. Model validation was done at two levels of aggregation: (a) by comparing parameterization functions used as well as parameter values to the data (leaf and tiller appearance, leaf number, blade dimensions, sheath length, internode length) and (b) by comparing ground cover (GC) and leaf area index (LAI) of simulated virtual wheat plots with GC and LAI calculated from data. A sensitivity analysis was performed by modulating parameters defining leaf blade dimensions and leaf or tiller appearance rate.

Suggested Citation

  • Evers, Jochem B. & Vos, Jan & Fournier, Christian & Andrieu, Bruno & Chelle, Michaël & Struik, Paul C., 2007. "An architectural model of spring wheat: Evaluation of the effects of population density and shading on model parameterization and performance," Ecological Modelling, Elsevier, vol. 200(3), pages 308-320.
    • Handle: RePEc:eee:ecomod:v:200:y:2007:i:3:p:308-320
    DOI: 10.1016/j.ecolmodel.2006.07.042
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    Cited by:

    1. Stilma, Eveline S.C. & Keesman, Karel J. & van der Werf, Wopke, 2009. "Recruitment and attrition of associated plants under a shading crop canopy: Model selection and calibration," Ecological Modelling, Elsevier, vol. 220(8), pages 1113-1125.
    2. Bown, James L. & Pachepsky, Elizaveta & Eberst, Alistair & Bausenwein, Ursula & Millard, Peter & Squire, Geoff R. & Crawford, John W., 2007. "Consequences of intraspecific variation for the structure and function of ecological communities," Ecological Modelling, Elsevier, vol. 207(2), pages 264-276.

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