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http://dx.doi.org/10.17820/eri.2022.9.1.077

Effects of Traffic Volume and Air Quality on the Characteristic of Urban Park Soil  

Joo, Sunyoung (Department of Environment Science and Engineering, Kyung Hee University)
Lee, Hyunjin (Department of Environment Science and Engineering, Kyung Hee University)
Jeon, Juhui (Department of Environment Science and Engineering, Kyung Hee University)
Seo, Inhye (Department of Applied Environment Science, Kyung Hee University)
Yoo, Gayoung (Department of Environment Science and Engineering, Kyung Hee University)
Publication Information
Ecology and Resilient Infrastructure / v.9, no.1, 2022 , pp. 77-82 More about this Journal
Abstract
This study aims to understand how mobile and stationary air pollution sources affect the air quality and soil properties in urban parks. We selected three sites of urban parks in Seoul as follows: Ha-neul Park in Mapo-gu (Site_M), Ill-won Eco-Park in Gangnam-gu (Site_G), and Yangjae Citizen's Forest in Seocho-gu (Site_Y), and compared the results of each site's traffic volume, air quality concentration, and soil analysis. Traffic volume was high in Site_M, followed by Site_G and Y; Site_M and G were closer to the resource recovery facility than Site_Y. Hence, we hypothesized that PM and NO2 concentrations in the atmosphere were higher in Site_M than Site_G and Y, causing different soil nitrogen content among sites due to different atmospheric deposition. Consistent with our hypothesis, the concentrations of PM2.5 and NO2 were higher in Site_M and G than Site_Y, while Site_Y had higher PM10 than other sites. The soil NO3- contents showed no significant difference among three sites, whereas the soil NH4+ content was extremely high in Site_Y. This high content of soil NH4+ is thought to be due to acidification from excessive fertilization. Lower soil pH of Site_Y further supported the evidence of heavy fertilization in this site. Overall nitrogen dynamics implies that soil nitrogen status is more influenced by park management such as fertilization rather than atmospheric deposition. Despite of lower soil NH4+ content of Site_M and G than Y, vegetation vitality looked similar among three sites. This indirectly indicates that excessive fertilizer input in urban park management needs to be reconsidered. This study showed that even if the air quality was different due to mobile and stationary sources, it did not directly affect the soil nitrogen nutrient status of the adjacent urban park.
Keywords
Atmospheric nitrogen deposition; Urban air pollutant source; Urban soil;
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