The Research Of Spatial-temporal Characteristics Of Changchun Population Migration During Chunyun Period

Population migration is an important approach for the realization of urbanization, which in turn promotes the population migration. Population migration, especially during the Spring Festival, is a peculiar phenomenon in our country, which results from the traditional culture influence and optimizing allocation of human resources in the process of economic and social transformation. Currently under the background of frequent population flow across the country, although the population of Changchun city remained a tendency of stable growth, the phenomenon of population loss in northeast China has to be very obvious.This article researches the characteristics of the population migration about Changchun city during the Spring Festival, which takes Changchun city as the research object, gets population migration data about Changchun and other cities during the period of Spring Festival from the "baidu migration" platform for 2015 to 2016,and uses several analysis method such as sequence scale, grade clock theory, natural fracture point method in Arc GIS, exploratory spatial data analysis method.And population migration data include two directions, which are population to move in Changchun city from other cities and to move out Changchun city to other cities. Then on the basis of the research about the characteristics of population migration, the article analyzes the main factors on affecting the population migration, such as economic differences between urban and rural and between regions, the transportation distance, migration background, urban hierarchy and functions. At the same time, from the perspective of urban geography, the article puts forward some measures to solve population migration issues, such as perfecting the economic structure Jilin province, optimizing the city level structure of Jilin province, exploring new urbanization patterns, grasping sequential variation of population migration and analyzing population migration motivation, etc.Through the research, this article can get the following conclusions:(1)For the Spring Festival transportation, before the Spring Festival population migration contact tend to be several cities which has strong migration contact with Changchun city; After the Spring Festival population migration contact tend to be more cities for Changchun city; The sequential change of population migration can be subdivided into three obvious stages; But the time of population emigration and immigration city tending to diversification is different.(2) On the whole,the cities which have strong population migration contact with Changchun city are mainly distributed in near field city of the northeast region or regional central cities, Jing-Jin-Tang District, the south central of in north China, the Yangtze river delta region, the pearl river delta region, in some parts of southeast coastal and Chengdu-Chongqing region.For Changchun city, the emigration distance is significantly further than immigration distance. And the density of immigration city is bigger than the emigration city.(3)The cities which have population migration contact with Changchun city exist significant spatial autocorrelation on dimensional layout, and it is significant agglomeration in space. At the same time, in the southeast of the northeast China, the north of the north China area and Bohai sea region,the spatial correlation and the importance of population migration are more obvious.(4) In the future, the population migration characteristics of Changchun city have certain stability.