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Urban-rural gradients of polycyclic aromatic hydrocarbons in soils at a regional scale: Quantification and prediction
Song, Shuai4; Lu, Yonglong4; Wang, Tieyu; Zhang, Sheng2; Sweetman, Andrew1; Baninla, Yvette4; Shi, Yajuan; Liu, Zhaoyang4; Meng, Jing; Geng, Jing3
2019-11-01
Source PublicationJOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
Volume249Pages:-
AbstractThe quantitative study of urban-rural gradients for persistent organic pollutants (POPs) is extremely important to understand the behavior of POPs as well as for ecological risk assessment and management. In this study, a practical urban-rural gradient model (URGM) was developed using atmospheric point source diffusion combined with a fugacity approach to test potential mathematical relationships among urban and rural soils. The mean value of polycyclic aromatic hydrocarbons (PAHs) for urban soils (0-2-km sites) was 570.80 ng/g, and was approximately 3.5 times higher than rural soils (30-50 km sites). Significant linear correlations were found between the amounts of PAHs in the surface soil and the city population and between the soil concentration and artificial surface area. Urban-rural PAH concentrations were simulated by the URGM and calibrated by city population and land-cover data, with average relative errors of 12.84%. The results showed that the URGM was suitable for simulating urban-rural PAH concentrations at a regional scale. The combustion of fossil fuels, bio-mass, and coal was the main source of soil PAHs in the study area, and the characteristic ratios of PAHs indicated a transition trend from pyrogenic to petrogenic sources along the urban-rural transects. This study thus provides a combined method for quantifying urban-rural gradients of PAHs and can thereby promote quantitative research on coupling among land cover, socio-economic data, and POP concentrations.
Department城市与区域生态国家重点实验室
KeywordUrban-rural gradient PAHs Land use Regional scale Spatial prediction
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/42481
Collection城市与区域生态国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, 18 Shuangqing Rd, Beijing 100085, Peoples R China
2.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England
3.Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China
4.Univ Sanya, Sanya 572000, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Song, Shuai,Lu, Yonglong,Wang, Tieyu,et al. Urban-rural gradients of polycyclic aromatic hydrocarbons in soils at a regional scale: Quantification and prediction[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2019,249:-.
APA Song, Shuai.,Lu, Yonglong.,Wang, Tieyu.,Zhang, Sheng.,Sweetman, Andrew.,...&Geng, Jing.(2019).Urban-rural gradients of polycyclic aromatic hydrocarbons in soils at a regional scale: Quantification and prediction.JOURNAL OF ENVIRONMENTAL MANAGEMENT,249,-.
MLA Song, Shuai,et al."Urban-rural gradients of polycyclic aromatic hydrocarbons in soils at a regional scale: Quantification and prediction".JOURNAL OF ENVIRONMENTAL MANAGEMENT 249(2019):-.
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