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![]() These works are licensed under a Creative Commons Attribution 4.0 International License. M.V. Rubtsov, A.A. Deryugin Complete text of the article:Download article (pdf, 0.7MB )UDС630*181.9:630*182.2DOI:10.17238/issn0536-1036.2015.5.9AbstractLong-term observations on the permanent experimental surfaces have been established trends of trees mortality in initial period (10 years) and after 20…30 years since clearcutting of 45…75 years old birch forests with preservation of spruce with preliminary generation. Cuttings were held in high productive southern-taiga birch forests of oxalidosum-myrtillosum group. Trees renewal occurs mainly on skidding tracks between lots of spruce of preliminary generation. Aspen abundantly restores by root suckers after a cutting and soon dies (85 %) because of natural thinning and repeated damages by elks. Regeneration of small-lieved trees in 20…30 years after cutting accounts and mostly is represented by birch. In this generation, there is a high mortality rate (85 %) due to shading by upper trees. Spruce renewal mainly occurs on skidding tracks. Over 20 years after cutting the amount of spruces (higher than 0.1 m) has changed from 2.0 to 11.3 thsnd. pcs. ha-1. In next 10 years mortali-ty of spruce averaged 55 %. The main reason of death was shading by upper trees. In initial period after birch cutting a mortality among them did not exceed 20 % (mainly spruce, una-ble to adapt to new conditions and damaged). Later, mortality increases till 30…45 % due to the competition for light resource: tree feels deficiency of light more heavily than it lower within canopy. Weakened, stunted spruce, mainly with relative length of crown – not more than 0.5, dies. Quantity of died spruces directly depends on the canopy density of spruce of preliminary generation. Spruces left after cutting of birch stands play the main role in for-mation of the future forests.AuthorsM.V. Rubtsov, Doctor of Agriculture, ProfessorA.A. Deryugin, Candidate of Agriculture, Senior Research Officer
AffiliationInstitute of Forest Science, Russian Academy of Sciences, Sovetskaya, str. 21, Uspenskoe, Moscow Region, 143030, Russia; e-mail: mivlarub@mail.ruKeywordssouthern taiga, birch forest, cutting with preservation of spruce, trees mortality, main inputs.References1. Beloglazov M.I., Karpechko A.Yu., Nikulin G.N., Roldugin V.K., Rumyantsev S.A. O nekotorykh ekologicheskikh aspektakh problemy atmosfernogo ozona po rezul'tatam izmereniy na Kol'skom poluostrove [Some Ecological Aspects of the Problem of Atmos-pheric Ozone Measured in the Kola Peninsula]. Prirodopol'zovanie v Evro-Arkticheskom regione opyt XX veka i perspektivy [Nature in the Euro-Arctic Region, Experiences of the Twentieth Century and Prospects: Proc.Conf.]. Apatity, 2000, pp. 184–192. 2. Grushko Ya.M. Vrednye neorganicheskie soedineniya v promyshlennykh vybro-sakh v atmosferu [Harmful Inorganic Compounds in Industrial Emissions into the Atmos-phere]. Leningrad, 1987. 207 p. 3. Pankratova N.V., Elanskiy N.F., Belikov I.B., Lavrova O.V., Skorokhod A.I., Shumskiy R.A. Ozon i okisly azota v prizemnom vozdukhe severnoy Evrazii po na-blyudeniyam v eksperimentakh TROICA [Ozone and Nitrogen 1. Deryugin A.A., Rubtsov M.V., Seryakov A.D. Rost eli posle rubki bereznyakov v yuzhnoy tayge [Growth of Spruce After Cutting of Birch Forests in Southern Taiga]. Le-snoe khozyastvo, 2000, no. 5, рр. 30–31. 2. Deryugin A.A., Seryakov A.D. Adaptatsiya podpologovoy eli k usloviyam vyrubki v podzone yuzhnoy taygi [Adaptation of Subordinate Spruce to Felling Conditions in Southern Taiga]. Lesokhozyaystvennaya informatsiya, 2002, no. 8, pp. 12–17. 3. Orlov A.Ya., Il'yushenko A.F. Sostoyanie podrosta eli na sploshnykh vyrubkakh v bereznyakakh yuzhnoy taygi [State of Spruce Renewal on Clear Felled Areas in Birch For-ests of Southern Taiga]. Lesovedenie, 1982, no. 1, pp. 18–25. 4. Orlov A.Ya. Pochvenno-ekologicheskie osnovy lesovodstva v yuzhnoy tayge [Soil-Ecology Bases of Forestry in Southern Taiga]. Moscow, 1991. 104 p. 5. Orlov A.Ya., Seryakov A.D. Formirovanie elovykh drevostoev iz podrosta na vyrubkakh melkolistvennykh lesov [Formation of Spruce Forests from Renewal After Cut-ting of Small-Leaved Forests]. Lesnoe khozyastvo, 1991, no. 1, pp. 23–25. ISSN 0536 – 1036. ИВУЗ. «Лесной журнал». 2015. № 5 25 6. Rubtsov M.V., Deryugin A.A. Dinamika vozrastnoy struktury populyatsii eli pod pologom yuzhno-taezhnykh bereznyakov Russkoy ravniny [Dynamics of Age Structure of Spruce Population Under the Canopy of Southern Taiga Birch Fores of the Russian Plain]. Khvoynye boreal'noy zony, 2013, Vol. ХХХI, no. 1–2, pp. 9–14. 7. Rubtsov M.V., Deryugin A.A., Nikitin A.P., Seryakov A.D. Vozrastnaya struktura populyatsii eli na vyrubkakh s sokhranennym elovym podrostom [Age Structure of Spruce Population on Felled Areas with Saved Spruce Young Growth]. Lesovedenie, 2001, no. 5, pp. 68–71. 8. Rubtsov M.V., Deryugin A.A. Rost eli pod pologom yuzhno-taezhnykh bereznya-kov i posle rubki ikh s sokhraneniem podrosta [The Growth of Spruces Under a Canopy of Southern-Taiga Birch Forests and After their Cutting with the Regrowth Preservation]. Le-snoy zhurnal, 2007, no. 2, pp. 19–27. 9. Rubtsov M.V., Deryugin A.A., Seryakov A.D. Zakonomernosti rosta eli posle rubki verkhnego yarusa berezy [Regularity of Spruce Growth After Cutting of the Upper Conopy of Birch]. Lesovedenie, 2005, no. 6, pp. 44–53. 10. Rubtsov M.V., Nikitin A.P., Deryugin A.A. Porazhenie gnil'yu eli v protsesse formirovaniya ee populyatsii pod pologom yuzhno-taezhnykh bereznyakov [Rot Damage of Spruce During Formation of Population Under the Canopy of Birch Forests in Southern Taiga]. Stroenie, svoystva i kachestvo drevesiny – Tr. IV Mezhdun. simpoziuma [Construc-tion, Features and Quantity of Wood. Proc. IV Int. Simposium]. Saint Petersburg, 2004,vol. II, pp. 456–457.Received on April 21, 2015
Mortality of Trees after a Birch Cutting with Preservation of Spruce in Southern Taiga in the Centre of the Russian Plain |
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