一种符合植物生理学的快速落叶模拟方法

摘要

Based on the plant physiology principle of leaf abscission, a rapid approach for leaf fall dynamic simulation is proposed. The method firstly got the leaf fall rhythm through interactive editing , analysed the influence of atmosphere factors on leaf fall mass, and considered the leaves′ age and wind force as the leaf fall excitation factors, then notably marked the specific defoliation on tree, and simulated the leaves′ movement using synthetic trajectory for the leaves whose state was falling currently. In the paper, the China fir was taken as the experiment tree, and the leaf fall movement by time was modeled. The result indicated that the proposed method simulating leaf fall has a rapid and convenient character , and has a strong user-interaction and general model, and can apply to other tree species′ leaf fall simulation.%以树叶凋落的生理学原理为依据，提出了一种树叶凋落快速模拟的方法。该方法首先采用交互式编辑确定叶凋落节律，由气象要素进行局部调整得到叶凋落动态。此外，考虑叶龄和风力对落叶的激励诱导作用，显著标识了树体上的具体凋落树叶，对处于当前凋落状态的树叶，采用合成路径方法模拟其空中飘落运动的过程。文中以杉木为实验树种，模拟了杉木叶随时间凋落的过程。结果表明，利用该方法进行落叶模拟具有快速简便的特点，用户交互性强、模型通用性好，可用于其他林木落叶模拟。