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首页> 外文会议>2016 IEEE International Conference on Functional-Structural Plant Growth Modeling, Simulation, Visualization and Applications >Impact of geometrical traits on light interception in conifers: Analysis using an FSPM for Scots pine
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Impact of geometrical traits on light interception in conifers: Analysis using an FSPM for Scots pine

机译：几何特征对针叶树光拦截的影响：使用FSPM对苏格兰松树进行分析

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The main principle in functional-structural plant models (FSPMs) is the interaction between plant structure and eco-physiology. One aspect where the structure is of special importance is the complex calculation of light distribution in a plant which is in many models the basis for photosynthesis calculation. In this work we try to quantify the importance of geometrical traits for light absorption in conifers, using the LIGNUM model for Scots pine, and a method of global sensitivity analysis for selected geometrical parameters at needle (angle, length) and shoot (branching and bending angles, radius to length ratio) scale. While all the simulations were executed on GroIMP, sensitivity analysis was performed in PYGMALION. A new interface was created to enable the communication between GroIMP and PYGMALION software using a black-box approach, with the overall workflow controlled by PYGMALION. First results of sensitivity analysis showed that needle length had the highest impact on light interception during the whole studied period of 10 years, followed by needle angle during the first 7 years. The sensitivity to both parameters had a decreasing tendency. Impact of radius to length ratio was very similar to branching angle of the higher order branches; very low during the first years of the simulation, with increasing tendency. After the first 7 years, it was higher than the one of needle angle. There was no impact of branching angle for branches connected to the trunk and of bending angle during the studied time period.
机译：功能结构植物模型（FSPM）的主要原理是植物结构与生态生理之间的相互作用。结构特别重要的一个方面是植物中光分布的复杂计算，这在许多模型中都是光合作用计算的基础。在这项工作中，我们尝试使用苏格兰松的LIGNUM模型以及针叶（角度，长度）和枝条（分支和弯曲）上选定的几何参数的全局敏感性分析方法，来量化针叶树中吸收光的几何特性的重要性。角度，半径与长度的比例）比例。虽然所有模拟都是在GroIMP上执行的，但是灵敏度分析是在PYGMALION中执行的。创建了一个新界面，以使用黑盒方法实现GroIMP与PYGMALION软件之间的通信，而整个工作流程均由PYGMALION控制。敏感性分析的最初结果表明，在整个研究的10年中，针长对光的拦截影响最大，其次是在前7年中针的角度最大。对这两个参数的敏感性都有下降的趋势。半径与长度之比的影响与高阶分支的分支角非常相似。在模拟的头几年中，该值非常低，并且有增加的趋势。在最初的7年之后，它高于针角之一。在所研究的时间段内，与主干相连的分支的分支角度和弯曲角度都没有影响。

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