МРНТИ 87.17.03

Polyakova G.G., Sokolova N.V., Senasheva V.A., Podolyak N.M.

Abstract. Open access materials concerning the amounts of toxic emissions from the Krasnoyarsk Aluminum Smelter (RUSAL Krasnoyarsk) have been collected and analyzed. Concentrations of the toxic gas benzo(a)pyrene, up to two orders of magnitude higher than the permissible level, have been chronically recorded in the air. The Smelter emits 97% of the total benzo(a)pyrene emissions in the city. To evaluate the impact of air pollutants on local ecosystems, annual monitoring of suburban pine forest stands was conducted in 2002-2023. Data obtained indicate
the degradation of the forest stands caused by their chronic damage by air pollutants. Needle discoloration, an increase in tree mortality, and an increase in the score for the forest vigor state category (6-point scale) prove sharply increased degradation of pine forests in 2020-2023. A higher degree of degradation was observed in the forest stand where the first cases of needle discoloration were recorded earlier. The results have confirmed that suburban forests are bioindicators of the urban air basin toxicity and allow observing the biodegradation dynamics.
Key words: air pollution, aluminum smelter, benzo(a)pyrene, suburban pine forest stands, sample plots, discoloration of needles, stock (volume) of died trees.

References
1 Krasnoyarsk again topped the ranking of the dirtiest cities in the world [Internet resource] http://www. newslab.ru/news/1020834 (Accessed: Feb 15 2021) (in Russian).
2 Dhaka’s air 2nd most polluted in the world this morning, Russia’s Krasnoyarsk tops AQI list. The Daily Star. [Internet resource] https://www.thedailystar.net/ environment/pollution/air-pollution/news/dhakas-air-2nd-most-polluted-the-worldmorning-russias-rasnoyarsk-tops-aqi-list-2957986 (Accessed: 2022 Feb 10).
3 Krasnoyarsk again topped the ranking of the dirtiest cities in the world [Internet resource] http://www. newslab.ru/amp/news.aspx?docId=1158779 (Accessed: Feb 13 2023) (in Russian).
4 Sibgatulin V.G., Shishatsky N.G. Krasnoyarsk Aluminium Smelter: ecological factor // ECO. – 2018. – No. 4. – P. 48-67 (in Russian). doi: 10.30680/ЕСО0131- 7652-2018-4-48-66
5 Environmental report in the Krasnoyarsk region in 2022 [Internet resource] http://www. law.sobranie.info/InfOtdel/SesDocuments.nsf/0/D3C32ACF53C5AFD947258A54000C7FA3/$ File/File.pdf?OpenElement (Accessed: October 2023). (In Russian).
6 RUSAL annual report for 2022. 20 years of progress [Internet resource] http://www.rusal.ru/upload/iblock/b69/b69ea110f38548741dbda8d26f2c3873.pdf (in Russian).
7 Polyakova G.G., Senashova V.A., Podolyak N.M., Kolovskaya A.V., Kudryasheva N.S. Assessment of air toxicity in the megalopolis of Krasnoyarsk using longterm monitoring of suburban pine forests // Integrated Environmental Assessment and Management. – 2023. – No. 19 (4). – P. 980-987. doi/full/10.1002/ieam.4675
8 Clarke, N., Fischer, R., De Vries, W., Lundin, L., Papale, D., Vesala, T., Merilä, P., Matteucci, G., Mirtl, M., Simpson, D., Paoletti E. Availability,
accessibility, quality and comparability of monitoring data for european forests for use in air pollution and climate change science // iForest – Biogeosciences and Forestry. – 2011. – No. 4(4). – P. 162-166. doi: https://doi.org/10.3832/ifor0582-004
9 Hrebtov M., Hanjalic K. Numerical study of winter diurnal convection over the city of Krasnoyarsk: effects of non-freezing river, undulating fog and steam devils // Boundary-Layer Meteorology. – 2017. – No. 163. – P. 469–495. doi: https://link. springer.com/article/10.1007/s10546-016-0231-0
10 Resolution of the Chief State Sanitary Doctor dated January 28, 2021. On approval of sanitary rules and regulations 1.2.3685-21. [Internet resource] https:// ekan.ru/sites/docs/PDK_A_Atm.pdf?ysclid=lsa7gapdg7906235600
11 Analytical review of the state of air pollution in Krasnoyarsk (monthly for 2017-2023) [Internet resource] http://krasecology.ru/Air/LabReportSplit?- year=2023 (in Russian)
12 Polyakov V.I., Polyakova G.G., Pashenova N.V., Stasova V.V. Application of fungal metabolites for evaluation of pine stand vigor in condition of industrial pollution // Biology Bulletin. – 2005. – No. 32 (4). – P. 419-424. https://link.springer. com/article/10.1007/s10525-005-0119-x
13 Directions for Forest Management in the Forest Fund of Russia. – Moscow: Voenizdat, 1995. (in Russian).
14 Sanitary Regulations in Forests of the Russian Federation (Forest Regulation of the Russian Federation. Collection of Regulatory Documents). – Moscow: PAIMS, – 1998. – P. 310-329. (in Russian).
15 Polyakova G., Pashenova N., Senashova V., Podolyak N., Kudryasheva N. Pine stands as bioindicators: justification for air toxicity monitoring in an industrial metropolis // Environments. – 2020. – V. 7(4). – No. 28. – P. 1-13. DOI: https://doi. org/10.3390/environments7040028
16 Krasnoyarsk Aluminum Smelter. Ecological reconstruction. Project documentation. Section 8. 2022 [Internet resource] 449.00821.000000.2.4-ООС1 (in Russian).
17 Kolovsky R.A., Buchelnikov M.A. Monitoring of pollution of the reserve “Stolby” with fluorine // Siberian Ecological Journal. – 2008. No. – 15(3). – P. 507- 13 (in Russian). http://elibrary.ru/item.asp?id=11515834
18 Otnyukova, T.N. Medicinal kupena (Poligonatum odoratum) – an indicator of atmospheric pollution by fluorine // Vestnik KrasGAU. – 2013. – No. 4. – P. 111- 117 (in Russian). https://cyberleninka.ru/article/n/kupena-lekarstvennaya-polygonatum- odoratum-indikator-atmosfernogo-zagryazneniya-ftorom
19 State Report. 2020. On the state and protection of the environment in the Krasnoyarsk Territory in 2020 [Internet resource] https://www.mpr.krskstate.ru/dat/bin/art_attach/17690_gosdoklad_2020.pdf (in Russian).