Human and steppe in the early iron age. Results of interdisciplinary research

Introduction. Recent archaeological studies deal with the integration of natural science disciplines. Such scientific interaction includes the reconstruction ofclimatic changes, human adaptation to the changing conditions of nature, study of sociocultural specifics in nomadic groups as well as rising archaeological cultures, with emphasis on the interconnection between the fluctuations of steppe environmental conditions and steppe populations. Analysis. The article presents the results of the carried out interdisciplinary analysis of classic and modern archaeological studies and natural science disciplines. This allows evaluating the specifics of different factors (paleoclimatic, sociocultural, etc.) influencing the “steppe-human” system in a new way. Such factors as registered climatic changes, spreading areas of archaeological cultures, mortuary funeral rites, results of paleoanthropological examination, written records and ethnographic data provide evidence to reconstructing different time-span events of early nomads' history in one context. The reconstruction of historical reality shows quite strong correlation between the environment and specific features in the development of ancient steppe societies. Human has high adaptive abilities to changing factors. However, the steppe population mode of life is extremely conservative and it has practically never changed during the Sarmatian or Sauromatian history. Climate fluctuations over the steppe area influenced the demographic and social structure of nomadic society. During auspicious periods, nomadic communities became populous and active politically and military. If negative factors dominated, the population tended to decrease and the social structure tended to simplify. Critical indicators ofaridization and humidization in Eurasian steppesare followedwith thepopulation outflow, which is evidenced by small amount of archaeological sites or even by vanishing of cultures. Results. Thus, the authors conclude that when studying archaeological sites of the Early Iron Age nomadic cultures, it is necessary to consider the steppe and human as a single organism responsive to changing and a strong impact of environmental and socio-cultural factors.