The crown of the Siberian fir (Abies sibirica) is characterized by a specific organization, namely, a narrow-pyramidal form, apical dominance, tiering by types of sexualization, and whorled branching. The gravitational vector is clearly manifested at all levels of the organization of the crown, that is, in the architecture (diageotropism of branches), morphostructure (dorsoventrality of tissues and organs of shoots, as well as the location of reproductive organs in the tree crown and on the shoot), and physiological processes. It was shown that the internal state of the tree is a determining factor in graviperception. When Siberian fir trees weaken, the diageotropism of branches is lost, which can serve as a universal biomarker of impairment of homeostasis.

中文翻译：

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内稳态受损下西伯利亚冷杉树冠结构的变化

西伯利亚冷杉 (Abies sibirica) 的树冠具有特定的组织结构，即窄锥体形、顶端优势、按性化类型分层和轮状分枝。重力矢量在树冠组织的各个层次上都有明显的表现，即在结构（树枝的向异性）、形态结构（枝条组织和器官的背腹性，以及树冠中生殖器官的位置）和拍摄）和生理过程。结果表明，树的内部状态是重力感知的决定因素。当西伯利亚冷杉树衰弱时，树枝的异向性丧失，可作为体内平衡受损的通用生物标志物。