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首页> 外文会议>International Symposium on Plant Growth Modeling, Simulation, Visualization and their Applications; 20031013-20031016; Beijing; CN >Modeling of Biomass Acquisition and Partitioning in the Architecture of Sunflower
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Modeling of Biomass Acquisition and Partitioning in the Architecture of Sunflower

机译：向日葵建筑中生物量获取和分区的建模

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摘要

A mathematical sunflower growth model is presented that simulates interactions between plant structure and function. Dual-scale automaton is used to simulate plant organogenesis from germination to maturity on the basis of organogenetic growth cycles that have constant thermal time. Plant fresh biomass production is computed from transpiration, assuming transpiration efficiency to be constant and atmospheric demand to be the driving force, under non-limiting water supply. The fresh biomass is then distributed among expanding organs according to their relative demand. Demand for organ growth is estimated from kinetics of potential growth rate for each organ type. These are obtained through parameter optimization against an empirical, morphological data sets by running the model in inverted mode. Potential growth rates are then used as estimates of sink strength in the model. These and other "hidden" plant parameters are calibrated using the nonlinear, least squares method. The resulting model accurately simulated the dynamics of plant growth, architecture and geometry, enabling 3D visualization. The potential of the model's underlying concepts to simulate the plant's morphological plasticity in different resource situations is discussed.
机译：提出了数学向日葵生长模型，该模型模拟植物结构与功能之间的相互作用。双尺度自动机基于具有恒定热时间的有机遗传生长周期，用于模拟从发芽到成熟的植物器官发生。在不限制供水的情况下，假设蒸腾效率保持恒定且大气需求为驱动力，则根据蒸腾作用计算植物新鲜生物量。然后，将新鲜的生物质根据其相对需求分配到膨胀器官中。器官生长的需求是根据每种器官类型的潜在增长率的动力学来估算的。通过以逆模式运行模型，针对经验，形态数据集通过参数优化来获得这些参数。然后将潜在增长率用作模型中下沉强度的估计。这些和其他“隐藏”工厂参数使用非线性最小二乘法进行校准。生成的模型可以准确地模拟植物生长，架构和几何形状的动力学，从而实现3D可视化。讨论了该模型的基本概念在不同资源情况下模拟植物形态可塑性的潜力。

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