Solving the problems of assessing and predicting changes in the environment of regions, improving the quality of the scientific and information base for the purposes of managing regional development is the basis of modern geographical research. Identification of the leading factors in the transformation of geosystems is complicated by the need to take into account climatic and geodynamic changes. The study of the transformation of geosystems is particularly relevant for the pre-Baikal region, located at the junction of the Baikal rift, Altai – Sayan orogenic zones and the Siberian platform. The article deals with various ideas about the transformation of systems, and presents the results of a comprehensive reconstruction of the transformation of geosystems in the region, taking into account both climatic and tectonic transformations. It is shown that the main mechanisms and features of transformation of pre-Baikal geosystems are related to the impact of neotectonic processes. It is noted that the transformation of geosystems takes place regardless of the adjacent areas of the platform, and their subordination to the higher hierarchical level of the geosystem is violated. Geosystems are subject to rapid transformations associated with the redistribution of energy and matter occurring in the sphere of influence of geodynamically active zones. It is proposed to expand the Baikal natural territory by including areas of the platform that are subject to intensive transformation. The research is based on the use of theoretical and practical experience of many years of development in the field of system studies of the geographical environment of geodynamically active territories.

Konovalova Tatiana Ivanovna, Doctor of Science (Geography), Professor, Head, Department of Geography, Cartography and Geosystems Technology, Irkutsk State University, 1, K. Marx st., Irkutsk, 664003, Russian Federation, Leading Researcher, V. B. Sochava Institute of Geography SB RAS, 1, Ulan-Batorskaya st., Irkutsk, 664033, Russian Federation, e-mail: konovalova@irigs.irk.ru

Konovalova T.I. Transformation of Pre-Baikal Geosystems. The Bulletin of Irkutsk State University. Series Earth Sciences, 2020, vol. 31, pp. 26-47. https://doi.org/10.26516/2073-3402.2020.31.26 (in Russian)

Adamenko O.M. Ploskogor'ya i nizmennosti Vostochnoj Sibiri [Plateaus and lowlands of Eastern Siberia]. Moscow, Nauka Publ. 1971, 320 p. 

Armand A.D. Samoorganizaciya i samoregulirovanie geograficheskih system [Self-organization and self-regulation of geographical systems]. Moscow, Nauka Publ., 1988, 260 p. 

Armand A.D. Vremya v geograficheskih naukah [Time in geographical Sciences]. Construction of time in natural science: on the way to understanding the phenomenon of time. Part I. Interdisciplinary research. Moscow : Moscow Publ. House, 1996, pp. 201-233. 

Armand A.D. Samoorganizaciya i geosistemy [Self-organization and geosystems]. Self-organization and geodynamics of geomorphosystems. Materials of the XXVII Plenum of the geomorphological Commission of the Russian Academy of Sciences. Tomsk, Publ. of the Institute of atmospheric optics SB RAS, 2003, pp. 24-30. 

Archegov V.B. Stroenie, neftegazonosnost i faktory kontrolya zonal'nyh skople-nij uglevodorodov v drevnih kompleksah Sibirskoj platformy [Structure, oil and gas content and control factors of zonal hydrocarbon accumulations in ancient complexes of the Siberian platform] Oil and Gas Geology. Theory and practice. 2010, vol. 5, no. 3, pp. 1-13. 

Voronov P. S. Ocherki o zakonomernostyah morfometrii globalnogo reliefa Zemli [Essays on the regularities of morphometry of the earth's global topography]. Leningrad, Nauka Publ., 1968, 124 p. 

Gvozdeckij N.A. Nekotorye soobrazheniya o vozmozhnyh putyah razvitiya sistemnyh issledovanij v fizicheskoj geografii [Some considerations about possible ways to develop system research in physical geography]. Questions of geography. Sat. 104. System studies of nature, Moscow, Thought Publ., 1977, pp. 61-67. 

Grachev A.F. Osnovnye problemy novejshej tektoniki i geodinamiki Severnoj Evrazii [Main problems of the latest tectonics and geodynamics of Northern Eurasia]. Earth Physics, 1966, no. 12, pp. 5-36. 

Dumitrashko N.V., Kamanin L.G. Paleogeografiya Srednej Sibiri i Pribajkal'ya [Paleogeography of Central Siberia and the Baikal region]. Proceedings of the Institute of geography of the USSR Academy of Sciences, 1946, vol. 37, pp. 21-31. 

Zolotarev A.G., Savinskij K.A. Predriftovaya strukturnaya zona v Pribajkalie [Pre-drift structural zone in the Baikal region]. Geology and Geophysics, 1978, no. 8, pp. 60-68. 

Zubakov V. A. O tektonicheskoj podopleke istorii klimata i organicheskogo mira polyarnyh oblastej v pliocene i plejstocene. Geologiya polyarnyh oblastej Zemli [On the tectonic background of the history of the climate and organic world of the polar regions in the Pliocene and Pleistocene]. Geology of the polar regions of the Earth. Materials of the XLII Tectonic meeting, 2009, vol. 1, pp. 215-220. 

Isachenko A.G. Landshaftovedenie i fiziko-geograficheskoe rajonirovanie [Landscape studies and physical and geographical zoning]. Moscow Higher school Publ., 1991, 370 p. 

Kajnozojskie otlozheniya. Karta. M-b 1:2 500 000 [Cenozoic deposits. Map. 1:2 500 000]. Baikal. Atlas. Moscow, GUGK Publ., 1993, pp. 28-29. 

Konovalova T.I., Nogovicyn V.N. Prostranstvenno-vremennye preobrazovaniya geosistem Leno-Angarskogo plato [Space-time transformations of geosystems of the Leno-Angarsk plateau]. The Bulletin of Irkutsk State University. Series Earth Sciences, 2017, vol. 21, pp. 68-79. 

Krauklis A.A. Problemy eksperimentalnogo landshaftovedeniya [Problems of experimental landscape studies]. Novosibirsk, Nauka Publ., 1979, 232 p. 

Letnikov F.A. Glubinnye flyuidy kontinentalnoj litosfery. Flyuidnyj rezhim endogennyh processov kontinental'noj litosfery [Deep fluids of the continental lithosphere]. Fluid regime of endogenous processes in the continental lithosphere. Irkutsk, 2015, pp. 11-41. 

Lysak S.V. Teplovoj potok kontinental'nyh riftovyh zon [Thermal flow of continental rift zones]. Novosibirsk, Nauka Publ., 1988, 199 p. 

Maksyutova E. V., Kichigina N. V., Voropaj N. N., Balybina A. S., Osipova O. P. Ten-dencii gidroklimaticheskih izmenenij na Bajkal'skoj prirodnoj territorii [Trends of hydroclimatic changes in the Baikal natural territory]. Geography and natural resources, 2012, no. 4, pp. 72-80. 

Nogovicyn V. N. Transformaciya geosistem Leno-Angarskogo plato [Transformation of geosystems of the Leno-Angarsk plateau]. The Bulletin of Irkutsk State University. Series Earth Sciences, 2016, vol. 17, pp. 135-145. 

Retyum A. Yu. Issledovanie horionov kak predposylka prirodopolzovaniya [Research of chorions as a prerequisite for nature management]. Geography and natural resources, 1981, no. 2, pp. 3-18. 

Rozen O. M. Sibirskij kraton: tektonicheskoe rajonirovanie, etapy evolyucii [Siberian craton: tectonic zoning, stages of evolution]. Geotectonics, 2003, no. 3, pp. 3-21. 

Sinicyn V. M. Prirodnye usloviya i klimaty territorii SSSR v rannem i sred-nem kajnozoe [Natural conditions and climates of the territory of the USSR in the early and middle Cenozoic]. Leningrad, Leningrad Univ. Publ., 1980, 104 p. 

Solonenko V. P. Problemy sejsmogeologii vostochnoj chasti Transaziatskoj sej-smicheskoj zony [Problems of seismogeology of the Eastern part of the TRANS-Asian seismic zone]. Geodynamics of inland mountain regions. Novosibirsk, Nauka Publ.,1990, pp. 210-218. 

Sochava V.B. Geotopologiya kak razdel ucheniya o geosistemah [Geothophology as a section of the doctrine of geosystems]. Topological aspects of the doctrine of geosystems. Novosibirsk, Nauka Publ., 1974, pp. 3-86. 

Sochava V.B. Vvedenie v uchenie o geosistemah [Introduction to the doctrine of geosystems]. Novosibirsk, Nauka Publ., 1978, 320 p. 

Sochava V.B., Ryashin V.A., Belov A.V. Glavnejshie prirodnye rubezhi v yuzhnoj chasti Vostochnoj Sibiri i Dal'nego Vostoka [The main natural boundaries in the southern part of Eastern Siberia and the Far East]. Reports of the Institute of geography of Siberia and the Far East, 1963, vol. 4, pp. 19-24. 

Spizharskij T.N. Sibirskaya platforma [Siberian platform]. Geological structure of the USSR. Moscow, Nedra Publ., 1958, vol. 3, pp. 35-48. 

Shabelnikov A.V. Vozdejstvie kosmofizicheskih faktorov na klimat i biosferu [The influence of cosmophysical factors on the climate and biosphere]. Biophysics, 1992, vol. 2, pp. 372-375. 

Ufimcev G.F., Shchetnikov A.A., Filinov I.A. Poslednij erozionnyj vrez v rechnyh dolinah yuga Vostochnoj Sibiri [The last erosional cut in the river valleys of the South of Eastern Siberia]. Geology and Geophysics, 2010, vol. 51, no. 9, pp. 815-819. 

Allen P.A., Homewood P. Foreland basins: an introduction. Foreland Basins. Spec. Publ. Int. Assoc. Sedimentol., 1986, vol. 8, pp. 3-12. 

Allen M., Jackson J., Walker R. Late Cenozoic reorganization of the Arabia-Eurasia collision and the comparison of short-term and long-term deformation rates. Tectonics, 2004, vol. 23, TC2008. https://doi.org/10.1029/2003TC001530, 200. 

Benson R.H., Rakis-Elbied К., Bonaduce G. An important current reversal in the Rifien corridor at the Tortonian-Messinian boundary. Palaeoceanography, 1991, vol. 6, no. 1, pp. 164-192. 

Bethke Craig M., Marshak S. Brine migrations across North America-the plate tectonics of groundwater. Annu. Rev. Earth Planet. Sci., 1990, vol. 18, pp. 287-315. 

DeCelles P.G., Giles K.A. Foreland basin systems. Basin Research., 1996, vol. 8, no. 2, pp. 105-123. 

Dilts R. The Law of Requisite Variety: Why Flexibility is Important for Success in a Changing World. NLP University Press, Scotts Valley, CA, 1998, 55 p. 

Marcucci D.J. Landscape history as a planning tool. Landscape and Urban Planning, 2000, no. 49, pp. 67-81. 

Neef E. Die theoretischen Grundlagen der Landschaftslehre. Gotha-Leipzig, Verlag Hermann Haack, 1967, 152 p. 

Pristleу K., Debayle E., McKenzie D., Pilidou S. Upper mantle structure of Eastern Asia from multimode surface waveform tomography. J. of Geophysical Research, 2006, vol. 111, no. 10, pp. 93–111. 

Priestley K., McKenzie D. The thermal structure of the lithosphere from shear wave velocities. Earth and Planetary Science Letters, 2006, vol. 244, pp. 285-301. 

Slemmons D.B., Depolo C.M. Evaluation of active faulting and associated hazards. Wallace R.E. (ed.). Active Tectonics. Washington, National Academy Press, 1986, pp. 45-62. 

Royden L., Karner G. Flexure of lithosphere beneath Apennine and Carpathian foredeep basins: evidence for an INS ufficient topography load. Am. Assoc. Pet. Geol. Bull., 1984, vol. 68, pp. 704-712. 

Vassallo R., Jolivet M., Ritz J.F., Braucher R., Larroque Ch., Sue C., Todbileg M., Javkhlanbold D. Uplift age and rates of the Gurvan Bogd system (Gobi-Altay) by apatite fission track analysis. Earth and Planetary Science Letters, 2008, vol. 259 (3-4), pp. 333-346. 

Sella G.F., Dixon T.H., Mao A. А model for recent plate velocities from space geodesy. J. Geophys. Res., 2002, vol. 107, no. B4, 2081. 

Stille H. Das Verteilungs bild der Assyntischen Faltungen. Geologie, 1955, vol. 4, no. 3, pp. 219-222. 

Wilson I.G., Wilson M.E. Information, computers, and system design. Wiley, 1965, 341 p. 

Vos W., Meekes H. Trends in European cultural landscape development: perspectives for a sustainable future. Landscape and Urban Planning, 1999, no. 46, pp. 3-14.