Temporal fluctuation of human occupation during the 7th–3rd millennium cal BP in the central-western Korean Peninsula

Abstract

In this paper the population fluctuation in the central-western region of the Korean Peninsula is investigated using radiocarbon data obtained from prehistoric pit houses in residential bases or settlements during the seventh to third millennium cal BP comprising the Neolithic, Bronze and Early Iron ages in Korea. Fluctuation in radiocarbon date distribution is compared with summed probability distribution of calibrated dates as well as total numbers of settlements and dwellings arranged in chronological order. Results indicate the appearance of Neolithic and Bronze Age settlements in the early sixth and the late fourth millennium BC each followed by a rapid growth of population with a peak around 5500 and 3000 cal BP. Population decline is identified from 5300, 4900, 4500 cal BP during the Neolithic and 2800 and 2400 cal BP during the Bronze Age. The period between 4500 and 3500 cal BP corresponds with the lowest density of settlements and dwellings. Agricultural villages collapsed 2400–2000 cal BP. The paper suggests the hypothesis that climate change, especially cold or dry climate induced by weak Asian monsoon events, is possibly responsible for the fluctuation of settlements and population in prehistoric Korea.