Yury G. Chendev1*, Аleksandr N. Petin1, Anthony R. Lupo2 1 Russia, National Research Belgorod State University; 308015, Belgorod, Pobeda St. 85; * Corresponding author e-mail:
[email protected] 2 USA; University of Missouri; 302 Anheuser-Busch Natural Resources Building, Columbia, MO 65211-7250; e-mail:
[email protected] SOILS AS INDICATORS OF CLIMATIC CHANGES GEOGRAPHY 4 ABSTRACT. A number of examples for the system, which sensitively reacts to changes reaction of chernozems in the center of in natural conditions and, in the first place, the East European Plain and their relation to climate change. Therefore, in scientific to different periodical climatic changes literature in connection with soils, arose are examined. According to unequal-age such concepts as “soil-moment” and “soil- chernozems properties, the transition from memory”, “urgent” and “relict” characteristics the Middle Holocene arid conditions to the of soils, and “sensitivity” and “reflectivity” Late Holocene wet conditions occurred of soil properties [Aleksandrovskii, 1983; at 4000 yr BP. Using data on changes of Gennadiev, 1990; Sokolov and Targul’yan, soil properties, the position of boundary 1976; Sokolov, et al., 1986; and others]. between steppe and forest-steppe and the annual amount of precipitation at In contemporary world geography, there approximately 4000 yr BP were reconstructed. still remains a paucity of information on The change from warm-dry to cool-moist the many-sided interrelations of soils climatic phases, which occurred at the end with the other components of the natural of the XX century as a reflection of intra- environment. This is extremely important age-long climatic cyclic recurrence, led to aspect in light of current global ecological the strengthening of dehumification over problems, studies, and policy decisions, the profile of automorphic chernozems and one of which is the problem of climate to the reduction of its content in the upper change.