Vertical distribution and influencing factors of soil PAHs under different ecosystem habitats in the Liaohe River Estuary Wetlands, Northeastern China
Year: 2024
Type: article
Abstract: The vertical distribution, sources and influencing factors of polycyclic aromatic hydrocarbons (PAHs) in soil across ecosystem habitats were investigated around the Liaohe River Estuary (LRE) Wetland. The concentration of Ʃ 16 PAHs ranged from 41.0 to 435.4 ng g −1 dw, with a predominance of low molecular weight PAHs. Overall, PAHs and physicochemical properties of soil decreased with depth. Vegetation was found to increase soil PAHs. Additionally, soil physicochemical properties also regulated PAHs concentration, particularly for PAHs with high molecular weight . Among the habitats, total organic carbon was the key influencing factor for Suaeda heteroptera , while specific surface area was crucial for Phragmites australis . Results of characteristic ratio method and principal component analysis revealed that PAHs in LRE primarily originate petroleum, coal and biomass combustion. In summary, vegetation colonization significantly affected the distribution, sources, and controlling factors of PAHs. These findings are meaningful for management of soil PAHs across various ecosystem habitats.
Source: Marine Pollution Bulletin
Authors: Zeguo Ying, Shuyu Chen, Chuchu Zhang, Qihang Liao, Feng Yuan, Dawei Feng, Siwen Wang, Qing Liu, Zhe Hao
Institutions: Nanjing Normal University, Fudan University, Nanjing University
Language: English
Subfield: Health, Toxicology and Mutagenesis
Field: Environmental Science
Domain: Physical Sciences
SDG: Life on land
Open Access status: hybrid
Estimated APC paid: $3,630
Awards: G2260998766, G3088862520, G7669271429
OpenAlex ID: W4404851634