Kornienko Vladimir, Shkirenko Alyona, Reuckaya Valeriya, Meskhi Besarion, Dzhedirov Dmitry, Olshevskaya Anastasiya, Odabashyan Mary, Shevchenko Victoria, Mangasarian Dzhuletta, Kulikova Natalia
Scientific Research Laboratory for Monitoring and Forecasting of Donbass Ecosystems, Donetsk State University, 24 Universitetskaya St., 83001 Donetsk, Russia.
Agribusiness Faculty, Don State Technical University, 344000 Rostov-on-Don, Russia.
Plants (Basel). 2025 Jun 27;14(13):1970. doi: 10.3390/plants14131970.
The aim of the work is to analyze the survival strategy of L., one of the promising plants for landscaping and the creation of woodlands, in the changing ecological conditions of the steppe zone of the Donetsk ridge. In order to achieve this goal, we used biomechanics methods, which help to understand the relationship between the physical and mechanical properties of living tissues and the overall stability of trees during interactions with environmental factors such as temperature, snow and ice storms, cyclic freeze-thaw processes, wind loads, and others. The work was based both on experimental studies on the estimation of the tissue elasticity modulus in response to temperature changes, the mechanical stability of plants, the field collection of materials, and studies on the modeling of forest stand conditions of English yew. As a result of the conducted experiments, it was established for the first time that at the absolute wood moisture content of 77 ± 5.1%, the density of wood tissues in the conditions of Donetsk is 907 ± 43 kg m. The modulus of elasticity of living tissues depending on the temperature factor varied in the following range: 8.8 ± 0.31 GN m (T = 288 K), 11.5 ± 0.55 GN m (T = 255 K) and 6.9 ± 0.47 GN m (t = 308 K). It was revealed that during the local thawing of skeletal branches and tables, the mechanical resistance of is reduced by 20-22% and this critically affects the overall plant resistance. It was established for the first time that in the conditions of the steppe zone has an adaptive strategy of preserving the integrity of the organism under the action of environmental factors with limited loads. The secret lies in the formation of the shape memory effect, under the influence of critical loads. The plant, thus, chooses not migration, not death, but adaptation to changes in environmental conditions, which can become a serious factor in the use of in the landscaping of urban areas and the creation of artificial forests.
这项工作的目的是分析L.的生存策略，L.是一种有前景的用于景观美化和营造林地的植物，在顿涅茨克岭草原区不断变化的生态条件下。为了实现这一目标，我们使用了生物力学方法，这些方法有助于理解活组织的物理和机械性能与树木在与温度、暴风雪、周期性冻融过程、风荷载等环境因素相互作用期间的整体稳定性之间的关系。这项工作基于对温度变化时组织弹性模量的估计、植物的机械稳定性的实验研究、材料的野外采集以及对欧洲红豆杉林分条件的建模研究。实验结果首次确定，在顿涅茨克条件下，当木材绝对含水量为77±5.1%时，木材组织密度为907±43千克/立方米。取决于温度因素的活组织弹性模量在以下范围内变化：8.8±0.31吉牛/平方米（T = 288 K）、11.5±0.55吉牛/平方米（T = 255 K）和6.9±0.47吉牛/平方米（t = 308 K）。研究发现，在骨干枝和树盘局部解冻期间，L.的机械抗性降低20 - 22%，这对植物的整体抗性有严重影响。首次确定，在草原区条件下，L.具有在有限负荷的环境因素作用下保持生物体完整性的适应策略。秘诀在于在临界负荷的影响下形成形状记忆效应。因此，这种植物选择的不是迁移，不是死亡，而是适应环境条件的变化，这可能成为在城市地区景观美化和营造人工林中使用L.的一个重要因素。
