Research on the Distribution and Diffusion of Particulate Matter in Urban Street Canyons Based on CiteSpace

The accumulation of particulate matter in urban street canyons has caused serious air pollution, affecting the health of residents and greatly reducing the quality of living environment. This paper selected literature on particulate pollutants in urban street canyons from the Web of Science and CNKI databases as sample data. By using CiteSpace software, regional distribution characteristic maps, author cooperation network maps, literature co-citation maps, and keyword co-occurrence maps were obtained to analyze the development frontier and trend of research on particulate matter pollution in urban environments. This study provides a solid theoretical basis for future research on the distribution and diffusion of particulate pollutants in street canyons and provides better ideas for the planning and construction of street canyons.