Abstract
As air pollution becomes more serious in China, it is critical to study its influencing factors for targeted environmental governance. Existing researchers have conducted various studies on the factors of PM2.5 (fine particulate matter with a diameter less than or equal to 2.5 microns) pollution. However, these studies mostly conducted analyses focused on macroscopic factors and lacked an impact analysis of specific entity distributions on PM2.5 pollution. Furthermore, most existing studies used ordinary regression models that ignored the spatial heterogeneity of influence of various factors on pollution, leading to biased results. To address these issues, focusing on air quality in heavily polluted city (Weifang City), this study aims to measure the influence of spatial differentiation of the impacts of four roughly classified POIs, namely, industry, restaurants, scenic spots, and parking lots, on PM2.5 pollution quantitatively by using a geographically weighted regression (GWR) model (spatial varying-coefficient regression model). The results indicate that the spatial distribution of effects of industry, restaurant and parking lot POIs on PM2.5 concentrations in Weifang are similar. The impact of all four POIs on PM2.5 is spatially nonstationary and have certain spatial trends, parking lots have the greatest influence on PM2.5 pollution. Based on the findings, pollution prevention and control measures are suggested to be designed based on the actual situation. For instance, some counties in Weifang should be encouraged to develop tertiary industries dominated by tourism. This research investigated the spatial impacts of the specific entity distributions on air pollution and provided targeted advice based on findings, which can contribute to policy-making aimed at air pollution mitigation.
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Data Availability
The datasets generated and/or analyzed during the current study are not publicly available but can be obtained from the corresponding author on reasonable request.
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Funding
This research was funded by the National Natural Science Foundation of China under grant number 41907389 and 41871375, National Key Research and Development Program of China (2018YFB2100700).
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CL conceived the original idea for the study, and all coauthors conceived and designed the methodology. ZD, YZ, ZW, and JY conducted the processing and analysis of the data. CL, ZD, YZ, and ZM drafted the manuscript. All authors read and approved the final manuscript.
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Li, C., Zou, Y., Dai, Z. et al. The Impacts of POI Data on PM2.5: A Case Study of Weifang City in China. Appl. Spatial Analysis 15, 421–440 (2022). https://doi.org/10.1007/s12061-021-09408-0
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DOI: https://doi.org/10.1007/s12061-021-09408-0