Generic Model of Willow Stem Volume: A Meta-Analysis

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DOI:

https://doi.org/10.37482/0536-1036-2021-3-49-58

Abstract

Current scenarios of the consequences of global warming stimulate research on the carbon-depositing capacity of vegetation cover. The stem is the main part of the tree biomass, and the accuracy of its volume assessment determines the possibility of correct monitoring and forecasting of forest resources. In the Russian forest management system, willow was not among the main forest-forming species, and therefore there was no need to develop valuation standards for it. However, due to the increased relevance of assessing the carbon-deposing function of Russian forests and the requirement to take into account the contribution to the carbon balance of all types of vegetation, there is a necessity to develop such standards. The solution can be found in the development of a generic model (or table) that takes into account the morphology of willows within the Salix L. genus and is based on data published in different regions and countries. The object of our research is data on the volume of willow stems, which is published and freely available in Russia, Kazakhstan, Bulgaria, and Norway in the form of tables or regression models. However, the extent to which each local model is applicable in other regions is unknown. To resolve this uncertainty, we used meta-analysis as a statistical procedure that combines the results of several independent studies in order to find a common pattern. As a result, we obtained a generic model of stem volume for the Salix genus, which is characterized by a high coefficient of determination and can be applied to estimate the stem volume of any species of this genus with minimum deviations from the calculated values. The results of the work are aimed at improving the accuracy of accounting deciduous stands during forest management and monitoring activities, valuation of stands on permanent and temporary trial plots. The implementation of unified standards for the use, reproduction, conservation and protection of willow stands with all the diversity of its species will solve a number of practical issues.

Authors

Vladimir А. Usoltsev^1,2, Doctor of Agriculture, Prof.; ResearcherID: M-8253-2018, ORCID: https://orcid.org/0000-0003-4587-8952
Andrey А. Paramonov ^3,4, Junior Research Scientist, Postgraduate Student;
ResearcherID: ABH-7242-2020, ORCID: https://orcid.org/0000-0002-0961-221X
Sergey V. Tretyakov ^3,4, Doctor of Agriculture, Prof.; ResearcherID: AAE-3861-2021, ORCID: https://orcid.org/0000-0001-5982-3114
Sergey V. Koptev ^3,4, Doctor of Agriculture, Prof.; ORCID: https://orcid.org/0000-0002-5402-1953
Ivan S. Tsepordey ², Candidate of Agriculture, Research Scientist; ResearcherID: AAC-5377-2020, ORCID: https://orcid.org/0000-0002-4747-5017

Affiliation

¹Ural State Forest Engineering University, Sibirskiy Trakt, 37, Yekaterinburg, 620100, Russian Federation; e-mail: Usoltsev50@mail.ru
²Botanical Garden of the Ural Branch of the Russian Academy of Sciences, ul. 8 Marta, 202а, Yekaterinburg, 620144, Russian Federation; e-mail: Usoltsev50@mail.ru, ivan.tsepordey@yandex.ru
³Northern Research Institute of Forestry, ul. Nikitova, 13, Arkhangelsk, 163062, Russian Federation; e-mail: vagner93@inbox.ru, s.v.tretyakov@narfu.ru, s.koptev@narfu.ru
⁴Northern (Arctic) Federal University Named after M.V. Lomonosov, Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russian Federation; e-mail: vagner93@inbox.ru, s.v.tretyakov@narfu.ru, s.koptev@narfu.ru

Keywords

Salix L. genus, stem volume, generic model, meta-analysis, regression analysis

For citation

Usoltsev V.А., Paramonov А.А., Tretyakov S.V., Koptev S.V., Tsepordey I.S. Generic Model of Willow Stem Volume: A Meta-Analysis. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 3, pp. 49–58. DOI: 10.37482/0536-1036-2021-3-49-58

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