7. Giniyatullin R, Baktybaeva Z, Gabidullina G, Teltsova L. State and Environment Purifying Functions of Forest Stands Under Conditions of Polymetallic Pollution in the Industrial Center of Sterlitamak. Ecological-Socio-Economic Systems: Models of Competition and Cooperation (ESES 2019). Advances in Social Science, Education and Humanities Research. Shelomentsev A, Vasilieva O, Chepelyuk N and Orlov S, editors. 2020;392:130- 133. doi: 10.2991/assehr.k.200113.027
8. Kasimov NS, Kosheleva NE, Sorokina OI, Gunin PD, Bazha SN, Enkh-Amgalan S. An ecological-geochemical assessment of the state of woody vegetation in Ulaanbaatar city (Mongolia). Arid Ecosystems. 2011;1(4):201-213. doi: 10.1134/S2079096111040081
9. Giniyatullin RKh, Kulagin AYu. Osobennosti soderzhaniya svintsa v organakh u zdorovykh i oslablennykh derev''ev berezy povisloy (Betula pendula Roth) v usloviyakh promyshlennogo zagryazneniya [Features of lead content in healthy and weakened drooping birch trees (Betula pendula Roth) under industrial pollution conditions]. Izvestia Ufimskogo Nauchnogo Tsentra RAN = Proceedings of the RAS Ufa Scientific Centre. 2018;3:39-44. In Russian
10. Moudouma CFM, Riou C, Gloaguen V, Saladin G. Hybrid larch (Larix x eurolepis Henry): a good candidate for cadmium phytoremediation? Environmental Science and Pollution Research. 2013;20(3):1889-1894. doi: 10.1007/s11356-012-1419-6
11. Bonet A, Lelu-Walter M, Faugeron C, Gloaguen V, Saladin G. Physiological responses of the hybrid larch (Larix x eurolepis Henry) to cadmium exposure and distribution of cadmium in plantlets. Environmental Science and Pollution Research. 2016;23(9):8617- 8626. doi: 10.1007/s11356-016-6094-6
12. Juranovic Cindric I, Zeiner M, Starcevic A, Stingeder G. Metals in pine needles: characterisation of bio-indicators depending on species. Int J of Environmental Science and Technology. 2019;16:4339-4346. doi: 10.1007/s13762-018-2096-x
13. Koroteeva EV, Veselkin DV, Kuyantseva NB, Mumber AG, Chashchina OE. Nakoplenie tyazhelykh metallov v raznykh organakh berezy povisloy vozle karabashskogo medeplavil''nogo kombinata [Accumulation of heavy metals in the different Betula pendula Roth organs near the karabash copper smelter]. Agrokhimiya = Agrochemistry. 2015;3:88-96. In Russian
14. Kandziora-Ciupa M, Ciepal R, Nadgorska-Socha A, Barczyk G. Accumulation of heavy metals and antioxidant responses in Pinus sylvestris L. needles in polluted and non-polluted sites. Ecotoxicology. 2016;25(5):970-981. doi: 10.1007/s10646-016-1654
15. Vorobeichik EL, Pishchulin PG. Industrial pollution reduces the effect of trees on forming the patterns of heavy metal concentration fields in forest litter. Russian J Ecology. 2016;47(5):431-441. doi: 10.1134/S1067413616050155
16. Ivanov YV, Kartashov AV, Ivanova AI, Ivanov VP, Marchenko SI, Nartov DI, Kuznetsov VV Long-term impact of cement plant emissions on the elemental composition of both soils and pine stands and on the formation of scots pine seeds. Environmental Pollution. 2018;243(Pt B):1383-1393. doi: 10.1016/j.envpol.2018.09.099
17. Putenikhin VP, Farukshina GG, Shigapov ZKh. Listvennitsa Sukacheva na Urale: izmenchivost' i populyatsionno-geneticheskaya struktura [Larix sukaczewii in the Urals: Variability and population-genetic structure]. Moscow: Nauka Publ.; 2004. 275 p. In Russian
18. Nikolaeva MA, Orlova LV, Krest'yanov AA, Kamatov DN. Geographical variability of larch in the experimental forest crops of the Republic of Bashkortostan. Sibirskij Lesnoj Zurnal = Siberian Journal of Forest Science. 2019;1:30-43. doi: 10.15372/SJFS20190103 In Russian
19. Atlas Respubliki Bashkortostan [Atlas of the Republic of Bashkortostan]. Yaparov IM, editor. Ufa: Kitap Publ.; 2005. 420 p. In Russian
20. Reestr osobo okhranyaemykh prirodnykh territoriy Respubliki Bashkortostan [The list of specially protected natural areas of the Republic of Bashkortostan]. Mirkin BM, editor. Ufa: Gilem Publ.; 2006. 414 p. In Russian
21. O sostoyaniiprirodnykh resursov i okruzhayushchey sredy Respubliki Bashkortostan v 2018 godu: Gosudarstvennyy doklad [On the state of natural resources and the environment of the Republic of Bashkortostan in 2018: State report]. Ufa: Ministerstvo prirodopol'zovaniya i ekologii Respubliki Bashkortostan; 2019. 276 p. In Russian
22. Baktybaeva ZB, Suleymanov RA, Valeev TK, Rakhmatullin NR. Evaluation of oil refining and petrochemical industry impact on environmental and hygienic state of environmental objects and population health (Literature review). Occupational Health and Human Ecology. 2018;4:12-26. In Russian
23. Kuramshin EM, Kuramshina NG, Nurtdinova EE, Imashev UB. Geokhimicheskaya otsenka zagryazneniya tyazhelymi metallami gorodskikh pochv bashkortostana [Geochemical assessment of heavy metal pollution urban soils of Bashkortostan]. Bashkirskii khimicheskii zhurnal = Bashkir Chemistry J. 2015;22(2):74-79. In Russian
24. Andreeva EN, Bakkal IYu, Gorshkov VV, Lyanguzova IV, Maznaya EA, Neshataev VYu, Stavrova NI, Yarmishko VT, Yarmishko MA. Metody izucheniya lesnykh soobshchestv [Methods for studying forest communities]. St. Petersburg: Research Institute of Chemistry of St. Petersburg State University Publ.; 2002. 240 p. In Russian
25. Forest Ecology and Conservation: A Handbook of Techniques. Newton A, editor. Oxford: University Press Publ.; 2007. 454 p.
26. Lesnye ekosistemy i atmosfernoe zagryaznenie [Forest ecosystems and air pollution]. Alekseev VA, editor. Leningrad: Nauka Publ.; 1990. 200 p. In Russian
27. Root Methods: A Handbook. Smit AL, Bengough AG, Engels C, Noordwijk M van, Pellerin S and Geijn SC van de, editors. Berlin: Springer Publ.; 2000. 587 p.
28. Bargagli R. Trace Elements in Terrestrial Plants: An Ecophysiological Approach to Biomonitoring and Biorecovery. Berlin: Springer Publ.; 1998. 324 p.
29. Hill SJ, Fisher AS. Atomic Absorption, Methods and Instrumentation. Encyclopedia of Spectroscopy and Spectrometry. 3rd ed. Elsevier Publ.; 2017. pp. 37-43. doi: 10.1016/ B978-0-12-803224-4.00099-6
30. Rademacher P Atmospheric heavy metals and forest ecosystems: Work report of the Institute for World Forestry. Hamburg: Federal Research Centre for Forestry and Forest Products (BFH), Institute for World Forestry, 2003/12.
31. Seregin IV, Kozhevnikova AD. Roles of root and shoot tissues in transport and accumulation of cadmium, lead, nickel, and strontium. Russian Journal of Plant Physiology. 2008;55(1):1- 22. doi: 10.1007/s11183-008-1001-8
32. Kabata-Pendias А. Trace Elements in Soils and Plants. 4th ed. Boca Raton: CRC Press/ Taylor & Francis Group Publ.; 2010. 548 p.
33. Seregin IV, Ivanov VB. Physiological aspects of cadmium and lead toxic effects on higher plants. Russian J Plant Physiology. 2001;48(4):523-544. doi: 10.1023/A:1016719901147
34. Andresen E, Kupper H. Cadmium toxicity in plants. In: Cadmium: From Toxicity to Essentiality. Metal Ions in Life Sciences. Sigel A, Sigel H and Sigel RCO, editors. Netherlands: Springer Publ.; 2013;11:395-413.
35. Yusuf M, Fariduddin Q, Hayat S, Ahmad A. Nickel: An Overview of Uptake, Essentiality and Toxicity in Plants. Bulletin of Environmental Contamination and Toxicology. 2011;86(1):1-17. doi: 10.1007/s00128-010-0171-1
36. Sreekanth TVM, Nagajyothi PC, Lee KD, Prasad TNVKV Occurrence, physiological responses and toxicity of nickel in plants. Int J Environmental Science and Technology. 2013;10(5):1129-1140. doi: 10.1007/s13762-013-0245-9
37. Parlak KU. Effect of nickel on growth and biochemical characteristics of wheat (Triticum aestivum L.) seedlings. NJAS - Wageningen J Life Sciences. 2016;76:1-5. doi: 10.1016/j. njas.2012.07.001
38. Reeves RD, Baker AJM, Jaffre T, Erskine PD, Echevarria G, van der Ent A. A global database for plants that hyperaccumulate metal and metalloid trace elements. New Phytologist. 2018;218(2):407-411. doi: 10.1111/nph.14907