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Usoltsev, Vladimir, Zukow, Walery,Tsepordey, Ivan.The needle percentage in the leafy shoot biomass of Scots pine in climate gradients of Eurasia.Journal of Education, Health and Sport. 2022;12(5):416-428. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2022.12.05.033 https://apcz.umk.pl/JEHS/article/view/40321 https://zenodo.org/record/7139177 The journal has had 40 points in Ministry of Education and Science of Poland parametric evaluation. Annex to the announcement of the Minister of Education and Science of December 21, 2021. No. 32343. Has a Journal's Unique Identifier: 201159. Scientific disciplines assigned: Physical Culture Sciences (Field of Medical sciences and health sciences); Health Sciences (Field of Medical Sciences and Health Sciences). Punkty Ministerialne z 2019 - aktualny rok 40 punktów. Załącznik do komunikatu Ministra Edukacji i Nauki z dnia 21 grudnia 2021 r. Lp. 32343. Posiada Unikatowy Identyfikator Czasopisma: 201159. Przypisane dyscypliny naukowe: Nauki o kulturze fizycznej (Dziedzina nauk medycznych i nauk o zdrowiu); Nauki o zdrowiu (Dziedzina nauk medycznych i nauk o zdrowiu). © The Authors 2022; This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike. (http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. The authors declare that there is no conflict of interests regarding the publication of this paper. Received: 26.03.2022. Revised: 31.05.2022. Accepted: 31.05.2022. The needle percentage in the leafy shoot biomass of Scots pine in climate gradients of Eurasia Vladimir Andreevich Usoltsev1,2, Walery Zukow3*, Ivan Stepanovich Tsepordey2 1Ural State Forest Engineering University, 620100 Yekaterinburg, Sibirskiy Trakt, 37, Russia 2Botanical Garden of Ural Branch of RAS, 620144 Yekaterinburg, str. 8 Marta, 202а, Russia 3Faculty of Earth Sciences and Spatial Management, Nicolaus Copernicus University, str. Lwowska 1, 87-100 Toruń, Poland *corresponding author’s e-mail: zukow@wp.pl Abstract.The efficiency of using photosynthetically active radiation by trees largely depends on the architecture of the assimilation apparatus in their crown. It is known that an increase in the level of atmospheric pollution is accompanied, on the one hand, by an increase in the foliage density on the leafy shoot length, and on the other hand, by an increase in the transparency of the crown due to the expansion of the leafless inner part of the crown. On this basis, we assume that the foliage percentage of leafyshoots (PL) is a sensitive indicator of changes in growing conditions not only due to environmental pollution, but also in broader ecological aspects, in particular, in the geographical or climatic gradients of Eurasia. For this purpose, a database of empirical data has been formed in the amount of 558 model trees of Scots pine of natural and artificial origin from 6 regions of Northern Eurasia with a measured percentage of needle in the leafy shoot biomass. A regression model has been designed, in which the contributions of mensuration variables (tree age and stem diameter), climatic variables (temperature and precipitation) and the origin of stands (natural and artificial) to explain the variability of the desired PLindicator are 15, 53 and 30 %, respectively. It is concluded that with a decrease in annual precipitation from 600 to 300 mm, there is an increase in PLby 0.2..0.3% for every 10 mm of annual precipitation, both in natural stands and in plantations. When the January temperature decreases from 0°C to -20 °C, PLincreases by 0.8...1.0% for each 1°C. Thus, the foliage percentage of leafy shoots of Scots pine is an indicator of changes in growing conditions in the climate gradients of Eurasia. Keywords:needlepercentage in the leafy shoot biomass, regression model, dendrometric indicators of trees, natural stands and plantations, averaged January temperature, averaged annual precipitation. |
