Analysis of Spatio-temporal Patterns of Chinese Spring Festival Population Migration Based on the Night Light Data
Based on the monthly NPP/VIIRS night light data in 2013,2019 and 2021,we developed the night light difference index of the Spring Festival.We proved that the night light difference index has a significant correlation with the migrating population at provin-cial scale(R=0.61,P<0.001).We studied the spatio-temporal patterns of population migration during the Spring Festival in 2013,2019 and 2021.The results showed that:(1)the intensity of Spring Festival transportation in China differed significantly on both sides of Hu Line,and the population migration in southeast China is about 6 times of that in northwest China.The Spring Festival transpor-tation in southeast China presented the pattern of continuous migration,and it in northwest China presented the pattern of sporadic mi-gration.(2)During the Spring Festival from 2013 to 2021,the overall population migration pattern in China was roughly stable,but there were some spatial changes in the inflow and outflow places.(3)Economic development and COVID-19 may lead to the patterns.In particular,the COVID-19 epidemic and the"stay put during Spring Festival"policy have led to the reduction of large-scale popu-lation migration and intensity of transportation during the 2021 Spring Festival.
spring festival transportationpopulation migrationspatial patternsnight light remote sensingCOVID-19 epidemic
万方数据
维普
