Effects of Urban Green and Blue Space on the Diffusion Range of PM 2.5 and PM 10 Based on LCZ

Ruiyuan Jiang, Changkun Xie, Zihao Man, Rebecca Zhou and Shengquan Che ()
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Ruiyuan Jiang: School of Design, Shanghai Jiao Tong University, Shanghai 200240, China
Changkun Xie: School of Design, Shanghai Jiao Tong University, Shanghai 200240, China
Zihao Man: School of Design, Shanghai Jiao Tong University, Shanghai 200240, China
Rebecca Zhou: School of Design, Shanghai Jiao Tong University, Shanghai 200240, China
Shengquan Che: School of Design, Shanghai Jiao Tong University, Shanghai 200240, China

Land, 2023, vol. 12, issue 5, 1-15

Abstract: Urban green and blue space (GBS) significantly impacts the diffusion range of atmospheric particulate matter. By determining the diffusion distance of atmospheric particulate matter (PM 2.5 and PM 10 ) in Shanghai, combined with the GBS landscape pattern index, this study completed a stepwise multiple regression equation and correlation analysis to explore the relationship between the morphological structure and spatial configuration of GBS on the diffusion distance of atmospheric particles. The results show that the landscape shape index (LSI) and the number of patches (NP) of GBS have a significant positive correlation with the diffusion distance of atmospheric particles, while the coefficient of the percent of landscape (PLAND), as a key influencing factor, has a negative correlation. The mean Euclidean nearest neighbor distance (ENN_MN) and splitting index (SPLIT) in the spatial configuration metrics positively affect the diffusion distance. Studies have proved that complex and dispersed GBS will lead to the weakening of its purification ability, thereby increasing the pollution range of atmospheric particulate matter. The order of the influence of different GBS types on the diffusion distance of atmospheric particles is as follows: DT > BS > LP > ST > WA. Therefore, high-density GBS with simple shapes and concentrated distribution should be considered in the future construction of new cities.

Keywords: green and blue space; particulate matter; landscape pattern; diffusion distance; local climate zone (LCZ) (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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