Mechanical stability of Virginian juniper trees in steppe zone of the eastern-european plain
- Authors: Kornienko V.O.1, Kalaev V.N.2
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Affiliations:
- Donetsk State University
- Voronezh State University
- Issue: No 1 (2024)
- Pages: 70-78
- Section: RESEARCH
- URL: https://journals.rcsi.science/0024-1148/article/view/261245
- DOI: https://doi.org/10.31857/S0024114824010084
- EDN: https://elibrary.ru/slljxy
- ID: 261245
Cite item
Abstract
The paper establishes a relationship between the temperature factor, a physico-mechanical parameter — the modulus of elasticity of the Virginian juniper (Juniperus virginiana L.) wood tissues and its crown architectonics. Thus, with high positive temperatures in summer, a decrease in the elastic modulus leads to slow bending of the skeletal branches, which, in turn, affects the crown projection area, as well as its light permeability and, as a result, the temperature and humidity under the canopy. First of all, the temperature will affect the mechanical stability of trees, which is characterised by a critical ratio of the trunk diameter to its length (coefficient d/l ≤ 0.009) and the lowest range of the trunk’s resilience. The article developed a scheme for the mechanical stability of the Virginian juniper — due to the appearance of gaps and, in general, changes in the architectonics of the crown, uneven heating of the trunk occurs, which leads to a disruption of its uniformity in terms of the physico-mechanical properties of tissues. Irreversible deformations and numerous trunk breakages were revealed at an average height of 1.5 ± 0.5 m and in the root collar zone. As a result, the light regime of the forest stand is disturbed, which affects the phytoclimatic and bioecological features of the forest steppe plantations. A change in the phytoclimate under the canopy towards increased illumination due to a change in architectonics leads to a decrease in stability and, as a result, the inability of woody plants to resist the pressure of aggressive herbaceous and tree-shrub vegetation.
Keywords
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About the authors
V. O. Kornienko
Donetsk State University
Author for correspondence.
Email: kornienkovo@mail.ru
Russian Federation, Universitetskaya st., 24, Donetsk, 83001
V. N. Kalaev
Voronezh State University
Email: kornienkovo@mail.ru
Russian Federation, Universitetskaya sq. 1, Voronezh, 394018
References
- Alekseev V.A., Diagnostika zhiznennogo sostoyaniya derev’ev i drevostoev (Diagnostics of vitality of trees and stands), Lesovedenie, 1989, No. 4, pp. 51–57.
- Bel’gard A.L., Stepnoe lesovedenie (Steppe forestry), Moscow: Lesnaya promyshlennost’, 1971, 336 p.
- Dahle G.A., Grabosky J.C., Variation in modulus of elasticity (E) along Acer platanoides L. (Aceraceae) branches, Urban Forestry & Urban Greening, 2010, Vol. 9, pp. 227–233.
- Dahle G.A., James K.R., Kane B., Grabosky J.C., Detter A., A review of factors that affect the static loadbearing capacity of urban trees, Arboriculture & Urban Forestry, 2017, Vol. 43, No. 3, pp. 89–106.
- Ivan’ko I.A., Ekologicheskaya rol’ svetovoi struktury v formirovanii lesnykh kul’turbiogeotsenozov v stepi (sredopreobrazovanie, sil’vatizatsiya, ustoichivost’). Diss. kand. biol. nauk (The ecological role of light structure in the formation of forest cultures of biogeocenoses in the steppe (environment transformation, sylvatization, stability). Candidate’s biol. sci. thesis), Dnepropetrovsk: Dnepropetrov. nats. un-t, 2002, 239 p.
- James K.R., Dahle G.A., Grabosky J., Kane B., Detter A., Tree biomechanics literature review: dynamics, Arboriculture & Urban Forestry, 2014, Vol. 40, No. 1, pp. 1–15.
- James K.R., Haritos N., Ades P.K., Mechanical stability of trees under dynamic loads, American Journal of Botany, 2006, Vol. 93, No. 10, pp. 1522–1530.
- Jelonek T., Tomczak A., Karaszewski Z., Jakubowski M., Arasimowicz-Jelonek M., Grzywiński W., Kopaczyk J., Klimek K., The biomechanical formation of trees, Drewno, 2019, Vol. 62, No. 204, pp. 5–22.
- Kornienko V.O., Kalaev V.N., Ekologicheskoe znachenie biomekhanicheskikh svoistv drevesnykh rastenii na primere Juniperus virginiana L. (The ecological significance of the biomechanical properties of woody plants on the example of Juniperus virginiana L.), Vestnik VGU. Seriya: Khimiya. Biologiya. Farmatsiya, 2018, No. 1, pp. 97–103.
- Kornienko V.O., Kalaev V.N., Elizarov A.O., Vliyanie temperatury na biomekhanicheskie svoistva drevesnykh rastenii v usloviyakh zakrytogo i otkrytogo grunta (The influence of temperature on biomechanical properties of woody plants in the conditions of protected and open grounds), Sibirskii lesnoi zhurnal, 2018, No. 6, pp. 91–102.
- Kornienko V.O., Kalaev V.N., Vliyanie prirodno-klimaticheskikh faktorov na mekhanicheskuyu ustoichivost’ i avariinost’ derev’ev berezy povisloi v g. Donetske (The impact of natural climatic factors on a mechanical stablility and accident proneness of the silver birch trees in Donetsk city), Lesovedenie, 2022, No. 3, pp. 321–334.
- Kozlovskii B.L., Ogorodnikova T.K., Kuropyatnikov M.V., Fedorinova O.I., Assortiment drevesnykh rastenii dlya zelenogo stroitel’stva v Rostovskoi oblasti (Assortment of woody plants for green construction in the Rostov region), Rostov-na-Donu: YuFU, 2009, 416 p.
- Netsvetov M.V., Suslova E.P., Mekhanicheskaya ustoichivost’ derev’ev i kustarnikov k vibratsionnym nagruzkam (Mechanical stability of trees and schrubs under vibration loads), Promyshlennaya botanika, 2009, No. 9, pp. 60–67.
- Netsvetov M.V., Vliyanie vetra na osveshchennost’ podpologovogo prostranstva Acer saccharinum L. i Acer pseudoplatanus L. (Influence of wind on the illumination of the subsoil space of Acer saccharinum L. and Acer pseudoplatanus L.), Ukrainskii botanicheskii zhurnal, 2012, Vol. 69, No. 1, pp. 46–53.
- Niklas K.J., Spatz H.C., Worldwide correlations of mechanical properties and green wood density, American Journal of Botany, 2010, Vol. 97, No. 10, pp. 1587–1594.
- Nock C.A., Lecigne B., Taugourdeau O., Greene D.F., Dauzat J., Delagrange S., Messier Ch., Linking ice accretion and crown structure: towards a model of the effect of freezing rain on tree canopies, Annals of Botany, 2016, Vol. 117, No. 7, pp. 1163–1173.
- Tropical Tree Physiology. Adaptations and Responses in a Changing Environment, Springer, 2016, Vol. 6. 467 p.