Approaches to Spatial Trajectories of Hebei Economic Gravity Center During Jing-Jin-Ji Integration in China

With the rapid integration of Beijing, Tianjin and Hebei (Jing-Jin-Ji), the economy of Hebei Province has also achieved great development. This paper applies the economic center of gravity model to study the dynamic evolution process of Hebei's economic center of gravity since 2004, and concludes that its economic center of gravity shows the southeast-northeastsouthwest- southeast-south moving characteristics; then the principal component analysis method is used to extract the economic development. The level of economic development of openness, secondary industry and tertiary industry is the main factor affecting the economic center of gravity. As for policy recommendation, the paper suggest the regional economic open-up and improvement of industrial structure to balance regional economic development in Hebei Province.