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Functional-structural plant modelling using a combination of architectural analysis, L-systems and a canonical model of function

机译：功能性结构植物建模使用建筑分析，L-SYSTEMS和功能规范模型

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This paper presents a new method for producing a functional-structural plant model that simulates response to different growth conditions, yet does not require detailed knowledge of underlying physiology. The example used to present this method is the modelling of the mountain birch tree. This new functional-structural modelling approach is based on linking an L-system representation of the dynamic structure of the plant with a canonical mathematical model of plant function. Growth indicated by the canonical model is allocated to the structural model according to probabilistic growth rules, such as rules for the placement and length of new shoots, which were derived from an analysis of architectural data. The main advantage of the approach is that it is relatively simple compared to the prevalent process-based functional-structural plant models and does not require a detailed understanding of underlying physiological processes, yet it is able to capture important aspects of plant function and adaptability, unlike simple empirical models. This approach, combining canonical modelling, architectural analysis and L-systems, thus fills the important role of providing an intermediate level of abstraction between the two extremes of deeply mechanistic process-based modelling and purely empirical modelling.We also investigated the relative importance of various aspects of this integrated modelling approach by analysing the sensitivity of the standard birch model to a number of variations in its parameters, functions and algorithms. The results show that using light as the sole factor determining the structural location of new growth gives satisfactory results. Including the influence of additional regulating factors made little difference to global characteristics of the emergent architecture. Changing the form of the probability functions and using alternative methods for choosing the sites of new growth also had little effect. (c) 2004 Elsevier B.V. All rights reserved.
机译：本文介绍了一种制造功能性结构植物模型的新方法，该模型模拟对不同生长条件的反应，但不需要详细了解潜在生理学。用于呈现此方法的示例是山桦树的建模。这种新的功能结构建模方法是基于将植物动态结构的L系统表示与植物功能的规范数学模型连接。根据概率的增长规则，规范模型指示的生长被分配给结构模型，例如新芽的放置规则，这是从架构数据的分析中得出的。该方法的主要优点是，与普遍的基于过程的功能 - 结构植物模型相比，它相对简单，并且不需要详细了解潜在的生理过程，但它能够捕获植物功能和适应性的重要方面，与简单的经验模型不同。这种方法，结合规范建模，架构分析和L系统，从而填补了在基于机械过程的建模和纯正透明的模拟的两个极端之间提供中间抽象层的重要作用。我们还研究了各种的相对重要性通过分析标准桦木模型对其参数，功能和算法的许多变化的敏感性来实现这种集成建模方法。结果表明，使用光作为确定新增长的结构位置的唯一因素给出了令人满意的结果。包括额外的调节因素的影响对紧急建筑的全球特征几乎没有差异。改变概率函数的形式，并使用替代方法选择新增生长的网站也没有效果。 （c）2004年elestvier b.v.保留所有权利。

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