Analysis on the Characteristics and the Causes of Spatial-temporal Evolution of Population Distribution in Heilongjiang Province

In order to analyze in depth spatial distribution characteristics of population in Heilongjiang Province and further master the regularity of population distribution, this paper took 13 prefecture-level cities in Heilongjiang Province as the subject investigated, and used the relative change rate of population density, structure index of population distribution, population center of gravity as methods to research spatialtemporal characteristics and variation trend of population distribution in Heilongjiang Province from 1986 to 2016. The results showed that: The population of Heilongjiang Province during the study period was steadily increasing, but thirteen areas belonging to Heilongjiang Province were distinctly different because of the differences in geographical location, economy, resources and other factors; the population density of Heilongjiang Province showed a trend of steady increasing in time, in space population density in southwest region was largest, followed by the eastern region and northwest region was the smallest. Population distribution of Heilongjiang Province in 1986 to 1996 was more balanced, later population gradually migrated to developed areas; the changing trajectory of population gravity center had certain regularity which was gradually moving from the northeast to the southwest. Keywords—population distribution; spatial-temporal evolution; Heilongjiang Province