The theoretical basis for the analysis of the demographic situation in Russia
The article is devoted to the search of a new theoretical foundation for the analysis of the demographic situation in Russia in the XXI century. Author provides an overview of demographic theories, which are based on the study of changes in population, depending on the volume of livelihood. Statistical indicators of the demographic situation in Russia are interpreted through 3 related theories: the theory of demographic cycles of S. Nefedov, a passionarity concept of L. Gumilev and socionatural history of E. Kulpin.