Spatial Distribution Patternand Influence Factors of Underground Commerce in Nanjing

The development and utilization of underground commercial space can help improve the efficiency of urban space use and promote the improvement of urban residents’ consumption level. With the rapid growth of the total amount of underground commercial space development, the impact of underground commerce on the urban commercial space structure has become increasingly prominent. Based on network data, this paper uses kernel density estimation, multi-distance spatial clustering and geographical detector and other analysis methods, with reference to the spatial distribution of above-ground commerce, and discusses the spatial layout characteristics and influencing factors of underground commerce in Nanjing. The results show: (1) Underground commerce presents a multi-center spatial distribution pattern, and the agglomeration intensity is much higher than that of above-ground commerce, but the spatial diffusion power of the agglomeration center is weak; (2) The commercial center area and the rail transit station area have become the main space carriers of underground commerce, and the underground commercial distribution density in the rail transit station and its surrounding areas in the commercial center is relatively high; (3) Traditional urban space can only partially explain the spatial distribution of underground commerce, and the spatial differentiation mechanism of underground commerce needs to be further studied.