EJSSEurasian Journal of Soil ScienceEurasian J Soil Sci2147 - 4249Federation of Eurasian Soil Science Societieshttp://ejss.fesss.org/10.18393/ejss.2013.1.045-05310.18393/ejss.2013.1.045-053Transformation of upper part soil profile of sod-podzolic light loamy soils under the conditions of long-term soil improvement (To centerary of the long-term field experiment at Russian State Agrarian University-Moscow Timiryazev Agricultural Academy)Nikolay Matyuk Mikhail Mazirov mazirov@timacad.ruDaria Kascheeva Valery Polin Valeria Arefieva 2145 - 532013-01-052013-03-252013-03-282013-04-15 Copyright © 2016 The authors and Federation of Eurasian Soil Science Societies Arable sod-podzolic soils have the definite characteristics inherited from the virgin soils and obtained during the modern process of soil genesis under the influence of mankind activity. In arable soils hydrothermal conditions, biological turnover of nutrients change significantly that connected with their taking out with the yield and the compensation with mineral and organic fertilizers. The period of agricultural treatment of the soils indicates the total influence of the intensification factors and causes the changes in characteristics, regimes and fertility not only of arable layer, but lower layers of the upper part of soil profile (0-100 cm).Soil profile, long-term experiment, humus, total nitrogen, mobile phosphorus, exchangeable potassium