The aim of this article is to analyze characteristics of the paleoenvironment of the sub-Atlantic first third period identified on the composition and properties of paleosols and soil components on the example of a local area within the modern southern forest-steppe of Southern Urals. Pedohumus method, suggested by M.I. Dergacheva, was used for the reconstruction of pedogenesis conditions with applying of database available for the group of authors on ecology-humus relations in modern soils. The age of paleo- sol humus horizon in Baturino quarry is 2073 ± 259 years (NSKA) and 2132 ± 89 years (NSKA) according to radiocarbon dating of humic acids. The morphological structure of the sub-Atlantic soil allowed its attributing to analogues of chernozems on the bases of all inherent in this type of soil horizons with the appropriate characteristics. The paleosol was formed on two-layer sediments, detectable primarily in particle size distribution and magnetic susceptibility. The upper strata of paleosol differs from the lower in more acid reaction of soil solution, the lack of carbonates and another composition of exchangeable cations. The conditions of paleosol formation period were diagnosed on the basis of the reconstructed humus content, its humate composition, ratio of the structural elements in the composition of humic acids, values of optical density, the color coefficients, and the first moment in the luminescence spectra. They were similar to modern conditions of chernozem functioning in the southern forest-steppe zone or the northern part of the steppe. Climatic conditions were favourable for the steppe soil formation on the local area within the modern southern forest-steppe of southern trans-Uralian at the beginning of the sub-Atlantic period. In comparison with the current conditions, the climate might have been slightly warmer and characterized by moderate humidity.
paleosols, humus, humic substances, the late Holocene (sub-Atlantic period), Southern Urals, paleoenvironment
1. Ivanov I.V. Evolyuciya pochv stepnoy zony v golocene. - M.: Nauka, 1992. - 144 s.
2. Aleksandrovskiy A.L., Aleksandrovskaya E.I. Evolyuciya pochv i geograficheskaya sreda. - M.: Nauka, 2005. - 223 s.
3. Podgornaya A.A., Dergacheva M.I., Zaharova E.G. Gumus paleopochv kurgannogo mogil'nika Sanatornyy-1 (Zapadnaya Sibir') i rekonstrukciya usloviy pedogeneza na ego osnove // Vestn. Tom. gos. un-ta. - 20o9. - № 328. - S. 198-20і.
4. Aleksandrovskiy A.L., Chendev Yu.G., Trubicyn M.A. Paleopochvennye indikatory izmenchivosti ekologicheskih usloviy central'noy lesostepi v pozdnem golocene // Izv. RAN. Ser. geograficheskaya. - 2011. - № 6. - S. 87-99.
5. Dergacheva M.I., Ochur K.O. Rekonstrukciya izmeneniy prirodnoy sredy v techenie golocena pedogumusovym metodom na territorii Central'no-Tuvinskoy kotloviny // Vestn. TGU. - 2012. - № 1 (17). - S. 5-17.
6. Pochvy rannesrednevekovogo (IV-VI vv. n.e.) gorodischa Srednego Pritobol'ya i ih paleogeograficheskoe znachenie / A.S. Yakimov, A.I. Kaydalov, E.A. Sechko [i dr.] // Arheologiya, etnografiya i antropologiya Evrazii. - 2012. - № 4 (52). - S. 134-143.
7. Demidenko G.A. Razvitie pochvennogo pokrova v Prieniseyskoy Sibiri (po rezul'tatam issledovaniy na arheologicheskih pamyatnikah). - Krasnoyarsk: Izd-vo KrasGAU, 2013. - 176 s.
8. Evolyuciya pochv i prirodnoy sredy na yuzhnom uchastke vostochnoevropeyskoy lesostepi (na primere issledovaniya gorodisch Har'kovskoy oblasti) / V.V. Koloda, Yu.G. Chendev, D.A. Borbukova [i dr.] // Povolzhskaya arheologiya. - 2014. - № 1 (7). - S. 247-267.
9. Turynina O.V. Ekologicheskiy monitoring sostoyaniya paleopochv Tatyshevskogo pedokompleksa // Vestn. KrasGAU. - 2015. - № 1. - S. 13-17.
10. Madanov P.V., Voeykin L.M., Tyurmenko A.N. Voprosy paleopochvovedniya i evolyucii pochv Srednego Povolzh'ya. - Kazan', 1962. - S. 311.
11. Spiridonova E.A. Evolyuciya rastitel'nogo pokrova basseyna Dona v verhnem pleystocene- golocene. - M.: Nauka, 1991. - 221 s.
12. Ivanov I.V., Tabanakova ED Izmeneniya moschnosti gumusovovgo gorizonta i evolyuciya chernozemov Vostochnoy Evropy v golocene (mehanizmy, prichiny, zakonomernosti) // Pochvovedenie. - 2003. - № 9. - S. 1029-1042.
13. Klimanov V.A. Klimat severnoy Evrazii v pozdnelednikov'e i golocene (po palinologicheskim dannym): avtoref. dis.. d-ra geogr. nauk. - M., 1996. - 46 s.
14. Kulikov P.V. Opredelitel' sosudistyh rasteniy Chelyabinskoy oblasti. - Ekaterinburg: Izd-vo UrO RAN, 2010. - 969 s.
15. URL: http://ru.climate-data.Org/location/1011382 (data obrascheniya 12 maya 2015 g.).
16. Ponomareva V.V., Plotnikova T.A. Metodika i nekotorye rezul'taty frakcionirovaniya gumusa chernozemov // Pochvovedenie. - 1968. - № 11. - S. 104-117.
17. Dergacheva M.I., Nekrasova O.A., Lavrik N.L. Guminovye kisloty sovremennyh pochv Yuzhnogo Urala. - Novosibirsk, 2002. - 24 s.
18. Analiz izmeneniy sostava i struktury guminovyh kislot pochv pri kislotnom i schelochnom gidrolize / V.D. Tihova, V.P. Fadeeva, M.I. Dergacheva [i dr.] // Zhurnal prikladnoy himii. - 2008. - T. 81. - № 11. - S. 1957-1962.
19. Orlov D.S. Gumusovye kisloty pochv i obschaya teoriya gumifikacii. - M.: Izd-vo MGU, 1990. - 325 s.
20. Welte E. Neuere Ergebnisse der Humusforschung // Angev. Chem. - 1955. - V. 67, № 5. - P. 153-155.
21. Aleksandrovskiy A.L. Zapis' prirodnoy sredy v pochvah golocena // Pamyat' pochv: pochva kak pamyat' biosferno-geosferno-antroposfernyh vzaimodeystviy. - M.: Izd-vo LKI, 2008. - S. 75-105.
22. Dergacheva M.I. Gumusovaya pamyat' pochv // Pamyat' pochv: pochva kak pamyat' biosferno- geosferno-antroposfernyh vzaimodeystviy. - M.: Izd-vo LKI, 2008. - S. 530-560.
23. Dergacheva M. I. Arheologicheskoe pochvovedenie. - Novosibirsk: Izd-vo SO RAN, 1997. - 228 s.
24. Maria Dergacheva. Pedohumic method in paleoenvironmental reconstructions: an example from Middle Sibiria / Quaterary International. - 2003. - V. 106-107. - P. 89-101.
25. Dergacheva M.I., Zykina V.S., Volkov I.A. Problemy i metody izucheniya iskopaemyh pochv: (metod. rekomendacii). - Novosibirsk: Izd-vo IGiG, 1984. - 79 s.
26. Dergacheva M.I, Ondar E.E., Kallas E.V. Specifika gumusa pochv Ubsunurskogo biosfernogo zapovednika // Vestn. KrasGAU. - 2009. - № 8. - S. 27-37.
27. Sootnoshenie elementov v guminovyh kislotah kak istochnik informacii o prirodnoy srede formirovaniya pochv / M.I. Dergacheva, O.A. Nekrasova, M.V. Okoneshnikova [i dr.] // Sibirskiy ekologicheskiy zhurnal. - 2012. - № 5. - S. 667-676.
28. Elementnyy sostav guminovyh kislot celinnyh chernozemov raznyh usloviy formirovaniya / M.I. Dergacheva, O.A. Nekrasova, D.I. Vasil'eva [i dr.] // Vestn. Orenburg. gos. un-ta. - 2012. - № 10 (146). - S. 90-96.
29. Kallas E.V. Gumusovye profili pochv ozernoy kotloviny Chulymo-Eniseyskoy vpadiny. - Novosibirsk: Gumanitarnye tehnologii, 2004. - 170 s.
30. Nekrasova O.A. Elementnyy sostav guminovyh kislot yuzhnotaezhnyh pochv Srednego Urala i prilegayuschih territoriy // Vestn. KrasGAU. - 2013. - № 3. - S. 23-28.
31. Dergacheva M.I. Humic acids of soils of different age and genesis // 10-th International meeting of the International Humic Substances Society, 24-28 July 2000, Toulouse (France). Toulouse, 2000. - P. 267-270.
