Formation of Tree Morphology in Cultivated Pine Stands. P. 105–117

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630*242:630*243

DOI:

10.37482/0536-1036-2024-2-105-117

Abstract

 The aim of this study is to assess the qualitative characteristics of the crowns, stems and growth of Scots pine (Pinus sylvestris L.) trees in cultivated stands of a dry forest on gently sloping hills thinned in a regular-uniform manner, as well as to develop proposals for production based on the data obtained. The stands under study grow in the southwestern part of the ribbon forests of the Altai Territory in the territory of the Klyuchevskoye forestry. The thinning was carried out in 2016 as part of the planned forest maintenance activities. The field stage of the research was completed in 2022. The sample plots laid had a rectangular shape and a square of at least 0.25 ha. The assessment of the qualitative characteristics of the trees has been carried out in accordance with the classification proposed by G.A. Chibisov et al. The significance of differences (or their absence) in the tree distribution by quality categories in the plots has been established using the χ2 test for comparing two distributions. The article presents the taxation characteristics of the main forest element of the stands under study, the quality indices for the assessed tree indicators, and the graphs of tree distribution by diameter and quality classes. It has been found that most of the trees have poor crowns (27–45 %) and growth (14–41 %). Such indicators are a consequence of an excessively high density of the stands and the lack of timely thinning. Regular-uniform thinning of moderate and moderately high intensity has contributed to an increase in the quality class of the trees. The impact of high and very high intensity thinning on the stands has been negative. Based on the conducted research, it is recommended to carry out thinning at an earlier age of the stand, abandon the regular-uniform thinning in favor of selective thinning using the grassroots method (if possible) and carry out thinning along the largest exploitable diameter of 10 cm in the studied forest stands and similar ones. The study can be continued by establishing the optimal exploitable diameter in younger plantations and in other types of forests, as well as determining the intervals of optimal density of pine stands of different ages and different types of forest. The results obtained can be useful in designing economic activities in the study area.

Authors

Aleksey Е. Osipenko, Candidate of Agriculture; ResearcherID: AAG-1421-2021, ORCID: https://orcid.org/0000-0002-6148-1747
Sergey V. Zalesov*, Doctor of Agriculture, Prof.; ResearcherID: H-2605-2019, ORCID: https://orcid.org/0000-0003-3779-410X

Affiliation

Ural State Forest Engineering University, Sibirskiy trakt, 37, Yekaterinburg, 620100, Russian Federation; osipenkoae@m.usfeu.ru, zalesovsv@m.usfeu.ru*

Keywords

forest plantations, stand, thinning, Scots pine (Pinus sylvestris L.), classification of trees, dry forest on gently sloping hills, the Altai Territory

For citation

Osipenko A.E., Zalesov S.V. Formation of Tree Morphology in Cultivated Pine Stands. Lesnoy Zhurnal = Russian Forestry Journal, 2024, no. 2, pp. 105–117. (In Russ.). https://doi.org/10.37482/0536-1036-2024-2105-117

References

1. Borisov A.N., Ivanov V.V., Petrenko A.E. Formation of Spatial Structure of Pine Stands Formed by Improvement Cuttings. Lesovedenie = Russian Journal of Forest Science, 2019, no. 1, pp. 7–18. (In Russ.). https://doi.org/10.1134/S0024114819010042

2. Bun’kova N.P., Zalesov S.V., Zalesova E.S., Magasumova A.G., Osipenko R.A. Fundamentals of Phytomonitoring. 3rd ed., revised and enlarged. Yekaterinburg, USFEU Publ., 2020. 90 p. (In Russ.).

3. Zalesov S.V. Forestry. Yekaterinburg, USFEU Publ., 2020. 295 p. (In Russ.).

4. Zakharov A.Yu., Chibisov G.A. Classification of Trees During Thinning. Lesnoy vestnik = Forestry bulletin, 2013, no. 3(95), pp. 76–80. (In Russ.).

5. Ivanov V.V., Borisov A.N., Petrenko A.E., Semenyakin D.A., Sobachkin D.S., Sobachkin R.S. The Density of Pine Stands under Intensive Forest Growing. Sibirskiy lesnoy zhurnal = Siberian Journal of Forest Science, 2017, no. 6, pp. 102–109. (In Russ.).

6. Malenko A.A., Paramonov E.G., Klyuchnikov M.V., Rtishchev S.Ya. Technical Guidance for Carrying out Improvement Felling in Light Coniferous Crops in Ribbon Forests. Barnaul, ASAU Publ., 2009. 22 p. (In Russ.).

7. Minin N.S. Growth Dynamics of Best Trees in Pine Stands of Artificial Origin under Thinning Influence. Lesnoy Zhurnal = Russian Forestry Journal, 2003, no. 4, pp. 26–30. (In Russ.).

8. Nikolaeva I.O., Solovev V.M. Classifying Specimen within Coniferous Plantations of Natural Origin in Order to Assess their Variability. Uspekhi sovremennogo estestvoznaniya = Advances in Current Natural Sciences, 2019, no. 12, pp. 14–19. (In Russ.).

9. Osipenko A.E., Bashegurov K.A., Klinov A.S., Osipenko R.A. The Impact of Line-Selective Thinning on Ribbon Plantations of Scots Pine. Lesa Rossii i khozyajstvo v nikh = Forests of Russia and Economy in Them, 2022, no. 3(82), pp. 4–16. (In Russ.). https://doi.org/10.51318/FRET.2022.56.44.001

10. Osipenko A.E., Klinov A.S. Qualitative Characteristics of Pine Trees in Artificial Stands after Improvement Thinning. Lesa Rossii i khozyajstvo v nikh = Forests of Russia and Economy in Them, 2022, no. 3(82), pp. 56–64. (In Russ.). https://doi.org/10.51318/FRET.2022.99.30.007

11. Rubtsov V.I., Novoseltseva A.I., Popov V.K., Rubtsov V.V. Biological Productivity of Scots Pine in Forest Steppe Zone. Moscow, Nauka Publ., 1976. 224 p. (In Russ.).

12. Solovyov V.M., Solovyov M.V., Sannikova O.N. Natural Сauses of Thinning Operations by the Characters of Stands Morphology and Formation. Lesnoy vestnik = Forestry Bulletin, 2007, no. 8, pp. 62–67. (In Russ.).

13. Chibisov G.A., Vyalykh N.I., Minin N.S. Logging of Forest Care in the European North: a Practical Guide. Arkhangelsk, 2004. 128 p. (In Russ.).

14. Yantsev A.V. The Choice of Statistical Criteria. Simferopol, TNU Publ., 2012. 138 p. (In Russ.).

15. Ebel A.V., Ebel Y.I., Zalesov S.V., Ayan S. The Effects of Different Intensity of Thinning on the Development in Scots Pine (Pinus sylvestris L.) Stands in Kazakh Uplands. Alinteri Journal of Agriculture Science, 2019, vol. 34, no. 2, pp. 182–187. https://doi.org/10.28955/alinterizbd.639014

16. Ganbaatar B., Jamsran T., Gradel A., Sukhbaatar G. Assessment of the Effects of Thinnings in Scots Pine Plantations in Mongolia: a Comparative Analysis of Tree Growth and Crown Development Based on Dominant Trees. Forest Science and Technology, 2021, vol. 17, iss. 3, pp. 135–143. https://doi.org/10.1080/21580103.2021.1963326

17. Hyytiäinen K., Tahvonen O., Valsta L. Optimum Juvenile Density, Harvesting, and Stand Structure in Even-Aged Scots Pine Stands. Forest Science, 2005, vol. 51, iss. 2, pp. 120–133. https://doi.org/10.1093/forestscience/51.2.120

18. Hyytiäinen K., Tahvonen O. Economics of Forest Thinnings and Rotation Period for Finnish Conifer Cultures. Scandinavian Journal of Forest Research, 2002, vol. 17, iss. 3, pp. 274–288. https://doi.org/10.1080/028275802753742945

19. Mäkinen H., Isomäki A. Thinning Intensity and Growth of Scots Pine Stands in Finland. Forest Ecology and Management, 2004, vol. 201, iss. 2–3, pp. 311–325. https://doi.org/10.1016/j.foreco.2004.07.016

20. Nilsson U., Agestam E., Ekö P.-M., Elfving B., Fahlvik N., Johansson U., Karlsson K., Lundmark T., Wallentin C. Thinning of Scots Pine and Norway Spruce Monocultures in Sweden – Effects of Different Thinning Programmes on Stand Level Gross- and Net Stem Volume Production. Studia Forestalia Suecia, 2010, no. 219. 46 p.

21. Tahvonen O., Pihlainen S., Niinimäki S. On the Economics of Optimal Timber Production in Boreal Scots Pine Stands. Canadian Journal of Forest Research, 2013, vol. 43, no. 8, pp. 719–730. https://doi.org/10.1139/cjfr-2012-0494

22. Varmola M., Salminen H. Timing and Intensity of Precommercial Thinning in Pinus sylvestris Stands. Scandinavian Journal of Forest Research, 2004, vol. 19, iss. 2, pp. 142–151. https://doi.org/10.1080/02827580310019545

23. Zalesov S., Dancheva A.V., Ayan S., Suyundikov Z.O., Rachimzhanov A.N., Razhanov M.R., Opletaev A.S. Silvicultural Efficiency of the Thinning Efficiency of Pinus sylvestris L. Plantation in the Dry Subzone of Northern Kazakhstan Steppes. Kastamonu University Journal of Forestry Faculty, 2020, vol. 20, no. 3, pp. 220–228. https://doi.org/10.17475/kastorman.849517