Impact of geometrical traits on light interception in conifers: Analysis using an FSPM for Scots pine
Impact of geometrical traits on light interception in conifers: Analysis using an FSPM for Scots pine
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DOI：
10.1109/fspma.2016.7818307
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发表时间：
2016-11
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影响因子：
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通讯作者：
Katarína Streit;M. Henke;Benoit Bayol;P. Cournède;R. Sievänen;W. Kurth
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文献类型：
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作者：
Katarína Streit;M. Henke;Benoit Bayol;P. Cournède;R. Sievänen;W. Kurth
植物功能-结构模型（FSPM）的主要原理是植物结构与生理生态之间的相互作用。结构特别重要的一个方面是植物中光分布的复杂计算，这在许多模型中是光合作用计算的基础。在这项工作中，我们试图量化的几何性状的光吸收针叶树的重要性，使用木质素模型苏格兰松，和全局敏感性分析的方法，在针（角度，长度）和拍摄（分支和弯曲角度，半径与长度之比）尺度上选定的几何参数。虽然所有模拟都在GroIMP上执行，但敏感性分析在PYGMALION中进行。创建了一个新的接口，以使用黑盒方法实现GroIMP和PYGMALION软件之间的通信，整个工作流程由PYGMALION控制。敏感性分析结果表明，在整个10年的研究期间，针叶长度对光截获的影响最大，其次是针叶角度在前7年。对这两个参数的敏感性有下降的趋势。径长比的影响与高阶分支的分支角度非常相似;在模拟的第一年非常低，并有增加的趋势。前7年以后，它高于针角。在研究时间段内，连接到主干的分支的分支角度和弯曲角度没有影响。
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.