Edge Effect in Pine Stands in the Northern Taiga. P. 26–37

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630*5

DOI:

10.37482/0536-1036-2023-2-26-37

Abstract

The studies are carried out in pine stands situated on the forest boundaries, which are in between the open space locations and forest growth areas. The investigations were made on the territory of the Kholmogorskiy and Primorskiy districts in the Arkhangelsk region. The purpose of the research is to identify the characteristics of meteorological factors at different distances from the edge of phytocenosis as well as their influence on the undergrowth and ground vegetation in the ecotone zone. For this purpose, the vegetation, which grew on the transects at different distances from the edge of the phytocenosis, is described in layers. The transects were positioned perpendicular to the forest boundary. The following parameters were described and measured, such as undergrowth, ground vegetation, luminance, air temperature, wind speed, air humidity. The taxation of the stand was accomplished by using relascopic circular platforms. It is found that luminance, air temperature, and wind speed naturally decrease with distance from the edge of the phytocenosis deeper into the forest. The decrease in luminance can be revealed to 8 m, temperature to 8–15 m, wind speed to 30 m. However, air humidity increases up to 8 m. A correlation between meteorological factors and the distance from the edge of the phytocenosis is determined. The distribution of the undergrowth according to the edges of phytocenosis has a consistent pattern. The undergrowth of heliophytes of pine, birch, and aspen is most abundant at the edge of phytocenoses, and their numbers decrease with distance from the edge. The undergrowth of sciophytes either increases or its quantity does not change. Such distributions are confirmed by correlation analysis. The resulting figures are rated as significant or high. They are reliable at the significance level of 0.05. The number of plants in the grass-shrub tier decreases with the distance deep into the forest. Any define conclusion can’t be made regarding the moss-lichen tier. In general, it can be concluded that the size of the ecotone zone in terms of meteorological factors and indicators of vegetation is 12–14 m.

Authors

Pavel A. Feklistov^{1 *}, Doctor of Agriculture, Prof.; Researcher ID: AAC-2377-2020, ORCID: https://orcid.org/0000-0001-8226-893X
Aleksandr N. Sobolev², Candidate of Agriculture, Senior Research Scientist; Researcher ID AAS-3366-2020, ORCID: https://orcid.org/0000-0002-7961-8318
Nikolay A. Babich³, Doctor of Agriculture, Prof.; ResearcherID: G-7384-2019, ORCID: https://orcid.org/0000-0001-7463-2519
Natalia R. Sungurova³, Doctor of Agriculture, Assoc. Prof.; Researcher ID: H-1847-2019, ORCID: https://orcid.org/0000-0002-8464-4596
Vladimir I. Melekhov³, Doctor of Engineering, Prof.; ResearcherID: Q-1051-2019, ORCID: https://orcid.org/0000-0002-2583-3012
Ivan N. Bolotov¹, Doctor of Biology, Director; ResearcherID: P-2892-2015, ORCID: https://orcid.org/0000-0002-3878-4192

Affiliation

¹N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Naberezhnaya Severnoy Dviny, 109, Arkhangelsk, 163000, Russian Federation; pfeklistov@yandex.ru*, dirnauka@fciarctic.ru
²Solovetsky State Historical, Architectural and Natural Museum-Reserve, pos. Solovetsky, Primorskiy District, Arkhangelsk Region, 164070, Russian Federation; alex-sobol@mail.ru
³Northern (Arctic) Federal University named after M.V. Lomonosov, Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russian Federation; n.babich@narfu.ru, n.sungurova@narfu.ru, forest@narfu.r

Keywords

pine forests, northern taiga, edge of phytocenosis, edge effect, ecotone zone, meteorological factors, undergrowth of coniferous species, undergrowth of deciduous species, ground vegetation

For citation

Feklistov P.A., Sobolev A.N., Babich N.A., Sungurova N.R., Melekhov V.I., Bolotov I.N. Edge Effect in Pine Stands in the Northern Taiga. Lesnoy Zhurnal = Russian Forestry Journal, 2023, no. 2, pp. 26–37. (In Russ.). https://doi.org/10.37482/0536-1036-2023-2-26-37

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