Temporal And Spatial Variation Characteristics And Influencing Factors Of Population Distribution In Counties Of Inner Mongolia

Diversified natural factors and socio-economic factors create regional differences in population distribution.Defining the spatial characteristics and influencing factors of population distribution plays an important role in enhancing the understanding of human-land relationship and realizing the sustainable development of population,society and ecological environment.Therefore,the spatial characteristics and influencing factors of population distribution are a problem worthy of attention.In this paper we select the county-level administrative boundary data of Inner Mongolia Autonomous Region,using the 2000-2015 statistical yearbook population data,the population density and total population of each county were calculated and counted,panel data analysis and spatial autocorrelation analysis were used to study the spatial and temporal distribution characteristics of population density and total population in each county.A total of 11 socio-economic factors and natural factors were selected.The global regression model and the geographically weighted regression model(GWR)were used to analyze the correlation between natural factors,socio-economic factors and population distribution in Inner Mongolia.The result shows:1.From 2000 to 2015,the total population of Inner Mongolia showed a trend of slow fluctuations and then declines.The counties with an increase in population are generally in the east and west,and the west is mainly concentrated near the urban area of Hubao,and the east is mainly located in Chifeng City and Tongliao City.Most of the counties with reduced population are distributed in pastoral areas,mainly distributed in the northern part of the Hohhot City,Baotou City,Ordos City Cluster in western Inner Mongolia,and in the northeastern part of Inner Mongolia,which borders the three eastern provinces of China.2.From 2000 to 2015,In areas with rapid population density growth,the most obvious are: the districts of Hohhot,Baotou,Erdos,Bayannaoer and Wuhai.The second is the area composed of counties in the area bordering Chifeng City and Tongliao City.The counties with reduced population density are mainly located in the semi-pastoral area and other areas,mainly in the northern part of the Hubao's urban agglomeration in western Inner Mongolia,and in the northeastern part of Inner Mongolia,which borders the three eastern provinces of China.3.From 2000 to 2015,Global space autocorrelation analysis shows: There is a significant spatial positive correlation between the total population of the counties in Inner Mongolia in most years.That is to say,there is a certain degree of aggregation in the spatial distribution of the total population of each county.Local spatial autocorrelation analysis found that the main aggregation types of spatial autocorrelation are "high-high" and "low-low" aggregation.The population distribution of “high-high” is mainly distributed in the border of Chifeng and Tongliao,and the border between Ordos and Baotou,most of which are in semi-pastoral areas.The distribution of the “low-low” type of population distribution is very stable,with the vast majority being located in pastoral areas.4.The impact on the population density distribution of the various counties in Inner Mongolia Autonomous Region has always been that socio-economic factors are stronger than natural factors,but the influence of natural factors on population density distribution is gradually increasing.Among the social and economic factors,the number of beds in medical institutions,the investment in fixed assets of the whole society,the number of highway mileage and the distribution of grain yield and population density are positively correlated.The total number of livestock at the end of the year and the number of sheep at the end of the year are always negatively correlated with population density distribution.relationship.Among natural factors,the most influential effect on population density distribution is NDVI,which is positively correlated.The average annual precipitation and annual average temperature,the impact on the population density distribution increases with the increase of the year,and is a positive correlation.5.From 2000 to 2015,In pastoral areas,semi-pastoral areas and other areas,the influence of socio-economic factors on population density distribution is stronger than natural factors,and the main factors affecting population density distribution in these three areas are not much different.