Study On The Spatial Distribution Of People In Xining

It has been proposed in 13 th Five-Year Plan that people-oriented is the core connotation of urban contribution in contemporary China,the study of urban population is one of the core problems of urban geography and population geography in recent years.Studying the characteristics and evolution trends of urban population spatial distribution and exploring its influencing factors is of great significance for urban social stability,economic development,rational industrial layout,urban planning and healthy sustainable development.Xining is a typical plateau-valley-type city and a central city on the Qinghai-Tibet Plateau,selecting Xining as the research area,The spatial distribution trend of population of Xining City is analyzed by using mathematical models and spatial econometric models,such as the Theil coefficient,and the standard deviation ellipse with the census data of Xining City from 1982 to2015.Exploring and model the population spatial distribution characteristics of county-level and street-town-level in Xining urban area by combining mathematical model and spatial econometric model to analysis of the evolution of the spatial distribution of population in Xining on different scales,on the basis of qualitative and quantitative analysis of factors affecting the spatial distribution of population in Xining City,using POI point of interest data,remote sensing image data,administrative division data,slope,dem data,demographic data,etc.,geographic weighted regression was used to fit the spatial distribution characteristics of Xining City,conclusion as below:(1)Xining City,as the capital city of Qinghai Province and the central city of the Qinghai-Tibet Plateau,is currently undergoing rapid growth,and the population is unevenly distributed.Many problems such as housing problems,transportation problems,social security problems,economic problems,and medical infrastructure resources brought about by excessive population concentration will gradually emerge in the near future.(2)Population is excessively concentrated in the main urban area of Xining City,the population density shows a gradual decreasing trend from the inside to the outside,and the difference in population between the main urban area and the three counties is increasing,that the main urban area attracts rural people to gather here because of its excellent natural conditions and perfect infrastructure.The population gap betweendistricts and townships in Xining City has gradually increased,and streets and towns with high population density have spatial clustering characteristics.The population distribution structure index increase year by year in different scale,indicating that population differences between districts and counties,According to the result of Theil coefficient,the differences are mainly concentrated on the street and township scales,districts and towns are increasing year by year,and the population distribution appears polarized.The average population of Chengxi District streets has a high spatial dividend and the greatest potential for development,compared with other urban areas and counties,it is most suitable for the population and economic growth of Xining City.(3)The migration trajectory of the population center of gravity indicates that the attractiveness of the main urban area of Xining City to the population has gradually increased over the past 30 years,the focus of population continues to move towards the main city,the coverage area of the population standard deviation ellipse is generally decreasing,the spatial distribution of population gradually shows a preliminary polarization.In 1982-2000,due to the migration of immigrants and the rise in the birth rate,the streets of the old urban areas(East City and Central District)have increased their population,the spatial distribution of the entire Xining City population has started to move toward the main urban area.In 2000-2015,due to the successive establishment of Chengnan New District and Haihu New District,driven and attracted the migration of some central areas and migrants to the new districts.New urban districts gradually formed a certain size of population clusters after 2010 by inclination of policies and the gradual convergence of business,industry,education,and real estate to new areas.The population standard deviation ellipse of the main urban area started to move to the southwest first,and the trend of the population population ellipse standard deviation to the southeast of Xining City has slowed down.(4)Population distribution tends to be single-centered in Xining City,and there is a trend towards a polycentric structure,but polycentric structure and population suburbanization are not obvious at present.(5)Xining City is a typical plateau valley city,the topography of the river valley restricts the direction and boundary of urban spatial expansion,which makes Xining’s population spatial distribution pattern different from other cities.In the past 37 years,the spatial distribution characteristics and evolution trend of the population have beenregularly distributed and expanded along the banks of the river,and then concentrate in urban centers.Different factors affecting the spatial distribution of population in Xining City in different periods.Among the main influencing factors affecting the spatial distribution of population,natural factors such as river valley topography and altitude have always been the main factors affecting the urban expansion and spatial distribution of population in Xining City,and human factors such as transportation,urban construction areas,commerce,education,medical care,real estate The influence on the spatial distribution pattern of population in Xining City is increasing.