Abstract
The results of studies of the eastern sector of Eurasia's steppe zone from the Volga region to the Altai on the subject of the dynamics of the steppe titularity are presented. The rapid and almost complete replacement of zonal steppe ecosystems on the plains with grain fields, which was produced by the Soviet Virgin Land Megaproject, formed a specific virgin space in the steppe zone. As a result of subsequent transformations, it developed into a post-virgin space, then transformed into an agro-export one. The leading factors of the formation of these spaces, their main qualitative characteristics, and specific features are described. The totality of the Virgin Land megaproject and the mass abandonment of fields, which has shown the self-restoring potential of the steppes, are considered as a unique experiment in the renewal of steppe grass stands. Taking into account the existing and new trends, we suggest an outline of the transition to a compromising space organized according to the principle of optimum economy and natural communities.
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