植物生长的形态与生理并行仿真模型

Parallel Simulation Model for Plant Growth by Integrating Morphology and Physiology

基于L-系统,构建植物形态结构与生理并行仿真模型。模型以L-系统字符重写迭代机制为基础。定义规则字符F所代表的枝条节间为基本生长单元对象,将植物体抽象映射为基本生长单元链表集合。链表中F字符寻找其直接前继字符进行生长状态标定,使抽象链表成为植物生长状态链。在植物生长周期内,将生物量生成分配模型同L-系统生长的拓扑模型耦合,实现植物生长的结构—功能模型互反馈仿真。以幼龄杉木植株为实验对象,在VC++编程平台下进行结构-功能模型耦合程序实现,在Open GL图形渲染环境中完成结果可视化。提出的模型对于忠实于植物基本生理活动规律的植物形态仿真具有一定的刻画能力。

The Parallel simulation of plant functional and structure model helps to reveal the law of plant growth and provide the basis for validating the model and optimal control in the agricultural and forest product process. This paper presents a plant function - structure model based on L - system. A virtual plant model is abstracted as a collec- tion of units based on the definition of the basic growth unit. The state of virtual plant basic unit is calibrated through the finding of front symbol F. The highlight work of this paper is that the plant funetion model is faithful to the plant physiology based on the improvement of L - system rule. The future work is to improve the biomass allocation model based on a lot of actual measured data of the experiment. The Function - Structure model is programmed at the Visual Studio and the result is visualized by the OpenGL. The young Cunningham ia lanceolata structure of plant model is as experiment object. The visual plant simulation is lack of sink strength and leaf density on the every growth cycle, the result has no rigorous test and verification.