Abstract: This paper explores the accessibility and equity of nucleic acid sampling points in central city communities. By analyzing the spatial distribution and resource allocation of nucleic acid sampling points, this paper aims to address the growing demand for nucleic acid sampling, and improve the efficiency and equity of nucleic acid sampling services. The study focuses on the central urban area of Nanchang City and proposes a research method to assess the comprehensive accessibility of nucleic acid sampling points under various travel modes. The analysis includes matching nucleic acid sampling points with the population and evaluating the level of parity using non-spatial analysis indexes such as the Lorentz curve and Gini coefficient. The results indicate that while the accessibility of nucleic acid sampling sites in Nanchang is generally good, there is still an unfair distribution in terms of equity.

Key words: accessibility, nucleic acid sampling point, two-step floating catchment area method, multiple travel mode