КРАТКИЕ СООБЩЕНИЯ И ОБМЕН ОПЫТОМ
Original article УДК 630*332.3
DOI: 10.37482/0536-1036-2023-3-185-194
Problems of Forest Resource Management in the Arctic Zone of the Russian Federation
Vasiliy F. Kovyazin1B, Doctor of Biology, Prof.;
ResearcherID: AAD-5917-2020, ORCID: https://orcid.org/0000-0002-3118-8515 Olga Yu. Lepikhina1, Candidate of Engineering, Assoc. Prof.; ResearcherID: Q-4455-2017, ORCID: https://orcid.org/0000-0003-1270-9730 Polina M. Demidova1, Candidate of Engineering, Assoc. Prof.; ResearcherID: AAP-3828-2020, ORCID: https://orcid.org/0000-0002-8488-512X Olga A. Kolesnik1, Candidate of Engineering, Assoc. Prof.; ResearcherID: AAD-5718-2020, ORCID: https://orcid.org/0000-0003-0423-2119 Seyed O.R. Shobairi23, PhD in GIS and Remote Sensing; ORCID: https://orcid.org/0000-0002-6528-8653
An Truong Nguyen1, Postgraduate Student; ResearcherID: HGD-4706-2022, ORCID: https://orcid.org/0000-0002-4881-7947
'Saint Petersburg Mining University, 21st Line, 2, Saint Petersburg, 199106, Russian
Federation; vfkedr@mail.ruH, Lepikhina_OYu@pers.spmi.ru, Demidova_PM@pers.spmi.ru,
Kolesnik_OA@pers.spmi.ru, annguyenthebeatles1997@gmail.com
2Central South University of Forestry and Technology, Shaoshan South Road, 498, Changsha,
Hunan, 410004, P.R. China; Omidshobeyri214@gmail.com
3Nanjing Forestry University, Longpan Road, 159, Nanjing, Jiangsu, 210037, China
Received on June 13, 2021 /Approved after reviewing on September 17, 2021 /Accepted on September 24, 2021
Abstract. The study exposes the issues with managing land and forest resources in the Arctic region. Among them are the inability to estimate the cost of forest resources, the conversion of forestry lands into industrial lands, the consequences of renting forest lands, an insufficient forestry inventory, a small number of employees of the State Forest Protection Service, and underdeveloped infrastructure. The main statements of the Arctic Hectare Program are reviewed, which give the possibility of granting land plots primarily located in forest areas. The program is discussed in comparison with the analogous Far Eastern Hectare Program. The development of the Arctic Hectare Program is expected to preserve and increase the popularity of the Arctic region in the future. However, the efficient use of the land requires the improvement of transport infrastructure. The internet site, Geoportal, is used for an analysis of the primary disadvantages of geoinformation systems for selecting land plots in the Arkhangelsk region, which is a part of the Arctic zone of the Russian Federation. The website was established within the Arctic Hectare Program. The article provides suggestions for additional functions of the public cadastral map. It also reveals the reasons for the absence of a methodology for estimating forest resources, including Arctic tundra vegetation. Furthermore, the difficulties with the forest land delegation are observed in relation to the
This is an open access article distributed under the CC BY 4.0 license
implementation of investment projects in mining, fuel, and energy areas, the development of transportation infrastructure, and the formation of environmental protection zones. The cases of renting out forest lands are discussed.
Keywords: forest resources management, Arctic zone, Arctic Hectare Program, public cadastral map
For citation: Kovyazin VF., Lepikhina O.Yu, Demidova P.M., Kolesnik O.A., Shobairi S.O.R., Nguyen A.T. Problems of Forest Resource Management in the Arctic Zone of the Russian Federation. Lesnoy Zhurnal = Russian Forestry Journal, 2023, no. 3, pp. 185-194. (In Russ.). https://doi.org/10.37482/0536-1036-2023-3-185-194
Научная статья
Проблемы управления лесными ресурсами в Арктической зоне
Российской Федерации
B.Ф. Ковязин1Ш, д-р биол. наук, проф.; ResearcherID: AAD-5917-2020, ORCID: https://orcid.org/0000-0002-3118-8515
О.Ю. Лепихина1, канд. техн. наук, доц.; ResearcherID: Q-4455-2017,
ORCID: https://orcid.org/0000-0003-1270-9730
П.М. Демидова1, канд. техн. наук; ResearcherID: AAP-3828-2020,
ORCID: https://orcid.org/0000-0002-8488-512X
О.А. Колесник1, канд. техн. наук; ResearcherID: AAD-5718-2020,
ORCID: https://orcid.org/0000-0003-0423-2119
C.О.Р. Шобайри2, канд. наук, эксперт по ГИСам; ORCID: https://orcid.org/0000-0002-6528-8653
Ч.А. Нгуен1, аспирант; ResearcherID: HGD-4706-2022, ORCID: https://orcid.org/0000-0002-4881-7947
1 Санкт-Петербургский горный институт, 21-я линия, д. 2, Санкт-Петербург, Россия, 199106; vfkedr@mail.ruH, Lepikhina_OYu@pers.spmi.ru, Demidova_PM@pers.spmi.ru, Kolesnik_OA@pers.spmi.ru, annguyenthebeatles1997@gmail.com
2Центрально-южный университет лесного хозяйства и технологий, Шаошань Сауф Роуд, д. 498, г. Чанша, пров. Хунань, Китай, 410004; Omidshobeyri214@gmail.com 3Нанкинский университет лесного хозяйства, Лонгпан Роуд, д. 159, г. Нанкин, пров. Цзянсу, Китай, 210037
Поступила в редакцию 13.06.21 / Одобрена после рецензирования 17.09.21 /Принята к печати 24.09.21
Аннотация. Выявлены проблемы управления земельными и лесными ресурсами в Арктической зоне. К таким проблемам можно отнести невозможность стоимостной оценки лесных ресурсов, перевод земель лесного фонда в земли промышленного пользования, последствия аренды лесных участков, недостаточность проведения инвентаризации земель лесного фонда, небольшое количество работников лесной охраны, слаборазвитую инфраструктуру. Рассмотрены основные положения программы «Арктический гектар», предоставляющей возможность получения земельных участков, расположенных преимущественно на землях лесного фонда. Программа описана в сравнении с «Дальневосточным гектаром». Предполагается, что развитие программы «Арктический гектар» предотвратит отток населения из Арктической зоны и увеличит
© Ковязин В.Ф., Лепихина О.Ю., Демидова П.М., Колесник О.А., Шобайри С.О.Р., Нгуен Ч.А., 2023
Статья опубликована в открытом доступе и распространяется на условиях лицензии СС ВУ 4.0
количество проживающих на этой территории. Однако для эффективного использования земельных участков необходимо развитие транспортной инфраструктуры. На примере геопортала Архангельской области, входящей в Арктическую зону Российской Федерации, проанализированы основные недостатки геоинформационных систем для выбора земельных участков в рамках программы «Арктический гектар». Предложено использовать дополнительные возможности публичной кадастровой карты. Раскрыты причины отсутствия методологии оценки лесных ресурсов, в том числе тундровых лесов арктической зоны. Обсуждаются проблемы передачи лесных земель в связи с реализацией инвестиционных проектов горнодобывающего и топливно-энергетического комплексов, транспортного строительства, созданием природоохранных зон. Рассмотрены случаи сдачи лесных земель в аренду. Ключевые слова: управление лесными ресурсами, организация лесопользования, Арктическая зона, Арктический гектар, программа «Арктический гектар», публичная кадастровая карта
Для цитирования: Ковязин В.Ф., Лепихина О.Ю., Демидова П.М., Колесник О.А., Шобайри С.О.Р., Нгуен Ч.А. Проблемы управления лесными ресурсами в Арктической зоне Российской Федерации // Изв. вузов. Лесн. журн. 2023. № 3. С. 185-194. https://doi.org/10.37482/0536-1036-2023-3-185-194
Introduction
The value of land and forest supplies increases with the identification of problems related to the rational use of natural resources, the analysis of possibilities for territorial improvement, and climate change [12, 17, 18, 23, 25, 26, 28].
The land funds are reduced because of the conversion of agricultural land for industrial purposes, settlements, and road network growth. Swamping, physical, and chemical deterioration have resulted in the loss of vast areas of agricultural territories [11, 14, 20, 24]. However, it is possible to solve the problem by providing the population with land at the expense of the forest areas.
One of the most significant categories of natural resources is forests. As a part of biological resources, it is exhaustive but renewable. Forest resources are evaluated by the extent of the forest area, timber reserves, and forest cover.
The world's wood reserves are about 350 billion m3. Russia has the greatest timber supplies in the world, with 26 % of the total, where about half is the softwood type [3].
Two-thirds of the territory of the Russian Federation is covered by forests. The Arctic area of Russia includes the northern part of the Siberian taiga, the largest forest on Earth. The taiga originates in the Scandinavian countries and extends over 9000 kilometers through Russia to the Pacific coast. It is several times larger than the Amazon Forest and occupies almost 20 % of the world's forest area. The Siberian taiga is legitimately called the lungs of the entire planet.
On August 1, 2021 in accordance with Federal Law No. 119-FZ, a simplified procedure for granting land plots for free use started on some territories of the Arctic zone. The process was stimulated by the practice of the Far Eastern region [15].
The Arctic Hectare Program is based on the Far Eastern Hectare Program, which has been operating on the territory of our country since 2016. A piece of land is given for five years; afterwards, it can be registered in ownership or leased on a long-term basis. This allows to maintain and increase the population of the Arctic zone in
the future. However, these areas are not as attractive as those that are located on the southern borders of the country. The efficient use of the territories also requires the improvement of transport infrastructure.
Results and discussion
Problems of land management. The Arctic Hectare Program excludes agricultural lands for reindeer breeding, nature protection areas, as well as the Forest Fund, cultural heritage sites, and coastal regions.
The results of the Far Eastern Hectare Program have shown that because of the distribution of land property, many segments of the economy have been developing, such as tourism, agriculture, the service market, and so on. However, they have also revealed the difficulties that may arise after acquiring a piece of land.
According to the legislation, the transferred plots must be under municipal or state ownership. If the plot's possession is not clearly defined, the local government must carry out a registration procedure. Another limitation is the land application categories, which are permitted by the law. The most attractive are plots for agricultural use, but they usually belong to communal property.
In the 1990s, radical changes took place in Russia related to the distribution of agricultural lands to workers on collective and state farms. As a result, citizens received land shares that didn't distinguish private ownership from communal property. In order to determine such plots according to the current official registration, it is required to provide a person with a part of land consistent with the land share.
Geoportal is used in the Arkhangelsk region to identify land plots suitable for the Arctic Hectare Program. It indicates the possible location of land plots [4] (fig. 1).
Fig. 1. Geoportal of the Arkhangelsk region
This website allows selecting land plots for further registration. Fig. 2 illustrates a list of possible locations in the Arkhangelsk region. Therefore, this online resource helps with the preliminary selection of a land plot. The usage of this site alone is undesirable because it does not contain enough information [2, 3, 11, 22, 23].
Let us choose as an example a land plot for potential registration with cadastral number 29:16:060201:43, information about which is available on the
Geoportal of the Arkhangelsk region (fig. 3). As can be demonstrated, this source does not contain enough information that should be considered when selecting a land plot. For example, it does not present limits on the use of the land plot that are significant. However, the public cadastral map [22] contains information about each area with special usage conditions, which are included in the Unified State Register of Real Estate.
Fig. 2. Tabular representation of available land plots
Fig. 3. Land plot selection
According to the information of the public cadastral map, the land plot with the cadastral number 29:16:060201:43 overlaps with the protected zone of the engineering communications (Protective Zone of Overhead Line-10 kV "09-06"), water protection zone, coastal protection belt (fig. 4).
Fig. 4. Graphical representation of a land plot with cadastral number 29:16:060201:43 on the
public cadastral map
Therefore, using only one source of information is not enough. It is necessary to use additional resources for the selection of land plots (public cadastral map, Federal Spatial Data Fund [2]) [5, 6, 9, 10, 13, 14, 27].
Problems of forest resource management. However, it isn't correct to think simply about the worth of land resources while risking forest resources for the growth of the Arctic zone's economy. A peculiarity of the subjects of the Russian Federation located in the Arctic is the predominance (more than 95 %) of the Forest Fund lands over other categories of land. The role of forest cover in subarctic areas is extremely important. Tundra forests are an evolutionarily formed biome in areas of highly unstable contact between natural complexes of taiga and tundra. The lands allocated for the Arctic Hectare Program are adjacent to the lands of the Forest Fund. This can expose them to various dangers, including the emergence of fires on forest land, illegal logging, etc.
In addition to performing work on the provision of land in the Arctic zone, a free forest allocation project is in plans. If these two projects might be linked, there will be a demand for wood processing and construction, and as a result, one plot will be able to provide four or five jobs for several years, which will be very useful for the economy of the Arctic zone [7, 21].
1. Impossibility of valuing forest resources. Currently, there is no methodology in Russia for the monetary estimates of forest resources, including tundra forests. The forest range differs in species composition, age structure, and taxonomic specifications. As a result, regional forest management do not have sufficient data on the economic assessment of forest resources; they cannot consider their environmental role when
making management decisions. There is also no single methodology for calculating the cadastral value of forest lands.
The main function of the tundra forests is a protective one. Thus, all types of wood logging are prohibited there, except for sanitary and selective logging for the improvement of the growing stock. Therefore, it is impossible to estimate the tundra forests' resources and protective functions.
2. Transformation forest lands to industrial lands. Since mining is intensively carried out in the Arctic zone, oil and natural gas account for a larger share. When developing mineral deposits, there is often a need to transfer forest lands to other categories of land. In this case, the area of forests decreases and their protective function as the main regulator of the harsh northern climate decreases. The transfer is possible only in connection with the implementation of investment projects in mining and fuel and energy complexes, transport construction, and the creation of nature conservation areas.
3. The consequences of renting forest plots. Many geological studies of the subsurface are performed in the Arctic zone; mineral deposits are developed; linear facilities are built. Forest plots are leased for the performance of these works; companies are required to provide reforestation of the area after the development of the land [19].
4. Lack of regular inventory of the Forest Fund. Prior to the adoption of the Forest Code (2006), a forest inventory was regularly performed in the country once every 10 years. The collected data were used for the development of the forest register, statistical reporting, and documentation for various authorities. Since 2006, the budget financing of the Roslesinforg forest management organization has been cancelled, as the forest inventory. Instead of conducting field measurement, the old taxational data of the forest range were updated, with reduced indicators, which was especially important for lessees of the forest lands. Therefore, the taxational descriptions and flight maps should be considered unsuitable for forestry and forest land management. Due to changes to the Forest Code, annual forest inventories have been performed since January 1, 2022 [20].
It should also be noted that the use of satellite images and aviation (airplanes, helicopters and quadcopters) for the protection and inventory of forests is not possible due to low financing of the forestry [16].
5. Insufficient number of forest protection workers in forestry leads to violations of forest legislation: unauthorized logging, the occurrence of forest grassroots and ridingfires. One ofthe declared tasks ofthe Conservation of Forests [1] federal project and the state program for the development of forestry in the country is an increase in the number of officials exercising forest supervision per 50 thousand hectares of forest lands. The growth rates of this indicator in the state program for the subjects of the Russian Federation differ dramatically, e.g., it will not change in the Arkhangelsk region and will increase by 3 times in the Yamalo-Nenets Autonomous District. In general, it is planned to increase it by 2 times in the Arctic zone [8].
6. In addition, the infrastructure, especially the transport accessibility of forest areas, is poorly developed on the Forest Fund lands. The absence of roads is one of the constraining factors for increasing the volume of harvesting of forest resources, namely, detection and extinguishing of fires, and conducting a ground forest land inventory.
Conclusion
A significant part of the territory of the Russian Federation belongs to the Arctic zone, and 95 % is located in the Forest Fund. The management of forest resources in the Arctic zone is characterized by the same basic problems as for other forests in the Russian Federation. These are the impossibility of valuing forest resources, the risk of transferring Forest Fund lands to industrial lands, the consequences of renting forest plots, an insufficient inventory of Forest Fund lands, an insufficient number of forest protection workers in forestry, underdeveloped infrastructure. Also, considering the Arctic zone of the Russian Federation, it is necessary to understand that most of the lands provided under the Arctic Hectare Program are located near the lands of the Forest Fund. Therefore, when choosing a land plot, it is necessary to pay attention to possible problems not only with the land but also with forest resource management.
REFERENCES
1. Federal Project "Forest Conservation", Which is a Part of the National Project "Ecology". Official website of Ministry of Natural Resources and Ecology of the Russian Federation. Available at: https://www.mnr.gov.ru/activity/np_ecology/federalnyy-proekt-sokhranenie-lesov/ (accessed 22.05.23).
2. Federal Spatial Data Fund. Official website of FSBI "Center for Geodesy, Cartography and SDI". Available at: https://cgkipd.ru/fsdf/ (accessed 22.05.23).
3. Filipchuk A., Moiseev B., Medvedeva M., Kinigopulo P. Comparative Characteristics of Forests and Forest Management in Various States. Forestry Information, 2015, vol. 3, pp. 56-69. (In Russ.).
4. Geoportal of the Arkhangelsk Region. Official website. Available at: https://maps29. ru/orbismap/public_map/geoportal29/arctic_g/ (accessed 22.05.23).
5. Harlov I.Yu., Nikolaev A.I., Kulagin A.A. Accounting of Forest Resources and Organization of Their Use in the Federal Information System. Izvestia of Orenburg State Agrarian University, 2013, no. 5(43), pp. 8-10. (In Russ.).
6. Ivantsova E.A. Information Support of Forest Fund Lands for Their State Cadastral Registration. Proceedings of Interexpo GEO-Siberi-2018, International Scientific Conference. Novosibirsk, SSGA Publ., 2018, vol. 2, no. 3, pp. 173-182. (In Russ.).
7. Kanashin N.V. Experience of Modern Programs and Geographic Information Systems Application at Formation of Land Parcels for Constructing Linear Structures. Geodezia i Kartografia = Geodesy and Cartography, 2019, vol. 80, no. 6, pp. 48-53. (In Russ.). https://doi.org/10.22389/0016-7126-2019-948-6-48-53
8. Kharitonova G.N. State Management of Forests of the Arctic Zone of the Russian Federation: Environmental and Economic Efficiency. Proceedings of the Kola Scientific Center of the Russian Academy of Sciences. Transaction Kola Science Cetnre Publ., 2020, vol. 2, no. 11, pp. 154-168. (In Russ.). https://doi.org/10.37614/2307-5252.2020.2.8.017
9. Kopylova N.S., Mustafin M.G., Mishina M.E. The Functionality Analysis of the Quantum Gis Geo-Information System as a Part of the Small-Scale Maps Creation. IOP Conference Series. Materials Science and Engineering, 2019, vol. 698, no. 4, art. no. 044016. https://doi.org/10.1088/1757-899X/698/4/044016
10. Kopylova N.S., Starikov I.P. Methods of Displaying Geospatial Information Using Cartographic Web Technologies for the Arctic Region and the Continental Shelf. Geodezia i kartografia = Geodesy and Cartography, 2021, vol. 971, no. 5, pp. 15-22. (In Russ.). https:// doi.org/10.22389/0016-7126-2021-971-5-15-22
11. Kurlovich L., Kositsin V., Tsaregradskaya S. Current Improvement of Non-Wood Forest Resource Inventory and Assessment Procedures. Lesokhozyaystvennaya informatsiya: elektronnyy setevoy zhurnal, 2019, no. 3, pp. 73-81. (In Russ.). https://doi.org/http://dx.doi. org/10.24419/LHI.2304-3083.2019.3.06
12. Masyuk N.N., Bushueva M.A., Bragina Z. The Institutional Regulatory Environment of the Digital Ecosystem: Theoretical Approach and Russian Experience. SHS Web of Conferences, 2020, vol. 73, art. no. 01019, pp. 1-7. https:// doi.org/10.1051/shsconf/20207301019
13. Masyuk N.N., Bushueva M.A., Vasyukova L.K., Kiryanov A.E. Platforms of Digital Experience and Digital Transformation in an Innovative Economy. Sovremennye tekhnologii upravleniya, 2018, vol. 4, no. 87(1), art. no. 87103. (In Russ.). Available at: https://sovman.ru/en/article/87103/ (accessed 22.05.23).
14. Mokhirev A.P., Pozdnyakova M.O., Medvedev S.O., Mammatov V.O. Assessment of Availability of Wood Resources Using Geographic Information and Analytical Systems (the Krasnoyarsk Territory as a Case Study). Journal of Applied Engineering Science, 2018, vol. 16, no. 3, pp. 313-319. https://doi.org/10.5937/jaes16-16908
15. On the Specifics of Granting Citizens Land Plots Owned by the State or Municipal and Located in the Arctic Zone of the Russian Federation and Other Territories of the North, Siberia, and the Far East of the Russian Federation, and on Amendments to Certain Legislative Acts of the Russian Federation. Federal Law RF, No. 119-FZ, 01.05.2016. (In Russ.).
16. Osipov A., Dmitriev V, Kovyazin V, Romanchikov A. Cartographo-Mathematical Modelling of Landscape Diversity for Land Use Planning Purposes. IOP Conference Series: Earth and Environmental Science, 2020, vol. 574, art. no. 012058. https://doi. org/10.1088/1755-1315/574/1/012058
17. Pashkevich M.A., Bech J., Matveeva V.A., Alekseenko A.V. Biogeochemical Assessment of Soils and Plants in Industrial, Residential and Recreational Areas of Saint Petersburg. Zapiski gornogo instituta = Journal of Mining Institute, 2020, no. 241, pp. 125-130. https://doi.org/10.31897/pmi.2020.L125
18. Pashkevich M.A., Petrova T.A. Assessment of Widespread Air Pollution in the Megacity Using Geographic Information Systems. Zapiski gornogo instituta = Journal of Mining Institute, 2017, vol. 228, pp. 738-742. (In Russ.). https://doi.org/10.25515/ pmi.2017.6.738
19. Patokin D., Danilov A., Isakov A. Environmental Monitoring of Natural Waters in the Zone of Impact of an Enterprise Producing Explosives. IOP Conference Series: Earth and Environmental Science, 2020, vol. 578, no. 1, art. no. 012038. https://doi.org/10.1088/1755-1315/578/1/012038
20. Pesotskaya E., Selyutina L., Egorova L. Actual Aspects of Modeling Method Application in Organization of Construction Management. IOP Conference Series: Materials Science and Engineering, 2019, vol. 687, no. 4, art. no. 044005. https://doi.org/10.1088/1757-899X/687/4/044005
21. Potseshkovskaya I.V., Soroka A.N. Revitalization of Urban Industrial Areas Based on Sustainable Development Principles. E3S Web of Conferences, 2021, vol. 266, art. no. 08012. https://doi.org/10.1051/e3sconf/202126608012
22. Public Cadastral Map. Official website of Rosreestr. Available at: https://pkk. rosreestr.ru/ (accessed 22.05.23).
23. Reizenbuk K., Sarapulova T., Shchedrin S., Shchedrina I. Application of Distributed Computing in Developing Architecture of Intelligent Information System for Automated Stock Exchange Trading. Journal of Advanced Research in Dynamical and Control Systems, 2019, vol. 11, no. 8, pp. 2549-2555.
24. Romanchikov A.Y., Kovyazin VF., Zhivotyagina N.I., Kitcenko A.A., Dang L.A.T. Algorithm of Forestland Mass Cadastral Evaluation Using Forest Inventory Data. Izvestiya
Tomskogo politekhnicheskogo universiteta. Inziniring georesursov = Bulletin of the Tomsk Polytechnic University. Geo Assets Engineering, 2020, vol. 331, no. 11, pp. 108-116. (in Russ.). https://doi.org/10.18799/24131830/2020/11/2890
25. Samarina VP., Skufina T.P., Savon D.Yu., Shinkevich A.I. Management of Externalities in the Context of Sustainable Development of the Russian Arctic Zone. Sustainability, 2021, vol. 13, no. 14, art. no. 7749. https://doi.org/10.3390/su13147749
26. Yurak V., Dushin A., Mochalova L. Vs Sustainable Development: Scenarios for the Future. Zapiski gornogo instituta = Journal of Mining Institute, 2020, vol. 242, pp. 242-247. (In Russ.). https://doi.org/10.31897/pmi.2020.2.242
27. Vasilenko N., Khaikin M., Lapinskas A. Ways of Achieving the Institutional Equilibrium in the Context of an Emerging Single Digital Space. Studies in Computational Intelligence, 2019, vol. 826, pp. 559-567. https://doi.org/10.1007/978-3-030-13397-9_61
28. Volkodaeva M.V, Taranina O.A., Volodina Y.A., Kuznetsov V.A. Development of Industrial Environmental Control Methods. IOP Conference Series: Earth and Environmental Science, 2019, vol. 378, art. no. 012108. https://doi.org/10.1088/1755-1315/378/1/012108
Конфликт интересов: Авторы заявляют об отсутствии конфликта интересов Conflict of interest: The authors declare that there is no conflict of interest
Вклад авторов: Все авторы в равной доле участвовали в написании статьи Authors' Contribution: All authors contributed equally to the writing of the article