Galitskiĭ V V
Zh Obshch Biol. 2010 Jan-Feb;71(1):19-29.
A model has been proposed for the architecture of a tree in which virtual trees appear rhythmically on the treetop. Each consecutive virtual tree is a part of the previous tree. The difference between two adjacent virtual trees is a section--an element of the real tree structure. In case of a spruce, the section represents a verticil of a stem with the corresponding internode. Dynamics of a photosynthesizing part of the physiologically active biomass of each section differ from the corresponding dynamics of the virtual trees and the whole real tree. If the tree biomass dynamics has a sigma-shaped form, then the section dynamics have to be bell-shaped. It means that the lower stem should accordingly become bare, which is typically observed in nature. Model analysis reveals the limiting, in the age, form of trees to be an "umbrella". It can be observed in nature and is an outcome of physical limitation of the tree height combined with the sigma-shaped form of the tree biomass dynamics. Variation of model parameters provides for various forms of the tree biomass distribution along the height, which can be associated with certain biological species of trees.
有人提出了一种树木结构模型，其中虚拟树有节奏地出现在树顶。每一个连续的虚拟树都是前一棵树的一部分。相邻两棵虚拟树之间的差异是一个部分——真实树结构的一个元素。以云杉为例，这个部分代表带有相应节间的茎的一个轮生体。每个部分生理活性生物量的光合部分的动态与虚拟树和整个真实树的相应动态不同。如果树木生物量动态呈西格玛形，那么部分动态必须呈钟形。这意味着较低的树干相应地会变光秃，这在自然界中是常见现象。模型分析表明，树木在年龄上的极限形态是“伞形”。这在自然界中可以观察到，是树木高度的物理限制与树木生物量动态的西格玛形相结合的结果。模型参数的变化提供了沿高度方向树木生物量分布的各种形式，这可能与某些树木的生物物种相关。
