Research on the evolution of spatial structure of three major urban agglomerations in China Rvesearch on the evolution of spatial structure for urban retail business Research on the evolution of spatial structure of Chinese province tourism by the disequilibrium perspective Study on the optimal scale of cities and urban agglomerations in China Research on the evolution of spatial stucture of Chinese province tourism by the disequilibrium perspective Research on optimizing the spatial structure of Shandong peninsula urban agglomeration driven by land capital 并列题名：Research on the evolution of spatial structure of Chinese province tourism by the disequilibrium perspective Research on the construction of the new urban area in China Research on the evolution of labor relations and the construction of harmonious labor relations in China Research on the influence of road traffic on land use in urban agglomeration areas