生态与农村环境学报2026，Vol.42Issue(9)：1260-1269,10.DOI:10.19741/j.issn.1673-4831.2025.0832
鄂东南富水水库沉积柱中多环芳烃(PAHs)的垂直分布、来源及生态风险评价
Vertical Distribution,Sources and Ecological Risk Assessment of Polycyclic Aromatic Hydrocarbons(PAHs)in Sediment Cores from the Fushui Reservoir in Southeastern Hubei,China
摘要
Abstract
Undisturbed sediment cores can provide a record of changing environmental conditions and pollution levels.Polycyclic aromatic hydrocarbons(PAHs)in sediment cores can serve as indicators of the historical pollution processes due to their persistence and distinct source characteristics.In this study,changes in polycyclic aromatic hydrocarbons(PAHs)were studied in four sediment cores from the Fushui Reservoir,the largest reservoir in southeastern Hubei Prov-ince,and changes with depth interpreted with respect to their changing sources and environmental processing.The results showed that the total concentrations of 16 PAHs(∑16 PAHs)ranged from 69.4 to 457 ng·g-1,with medium-and high-molecular-weight PAHs being dominant.The highest concentrations of ∑16 PAHs in the sediment core were observed at the river inlet to the reservoir,which may be caused by the intensive anthropogenic activities in this area.Temporally,the concentrations of ∑16 PAHs continuously increased since the 1950s,peaked after the 1980s,and declined after 2010,which corresponded to the progress of socioeconomic development and the implementation of environmental governance measures.Source analysis revealed that PAHs in the Fushui Reservoir primarily originated from petroleum sources,petro-leum combustion,coal/biomass combustion,and traffic emissions,which may be transported into the reservoir via catch-ment surface runoff and atmospheric deposition.Ecological risk assessment indicated that the PAHs in the sediment cores from the Fushui Reservoir posed low to moderate risks,with a declining trend in recent years.The findings of this study can provide a scientific basis and theoretical support for pollution prevention and integrated management of the Fushui Res-ervoir and its surrounding water environment.关键词
多环芳烃/沉积记录/富水水库/来源解析/生态风险评价Key words
polycyclic aromatic hydrocarbons(PAHs)/sedimentary record/Fushui Reservoir/source analysis/ecologi-cal risk assessment分类
资源环境引用本文复制引用
陈安然,陈伟,武振浩,廖媛,王宇,钱喆,熊俊武,方晶晶,张家泉,刘伟..鄂东南富水水库沉积柱中多环芳烃(PAHs)的垂直分布、来源及生态风险评价[J].生态与农村环境学报,2026,42(9):1260-1269,10.基金项目
资源与生态环境地质湖北省重点实验室开放基金资助项目(HBREGKFJJ-202301) （HBREGKFJJ-202301）
国家重点研发计划(2019YFC1805502) （2019YFC1805502）
国家自然科学基金(41907327) （41907327）
湖北省地质局年度科技项目(KJ2025-58,KJ2024-51) （KJ2025-58,KJ2024-51）
中国地质大学(武汉)中央高校基本科研业务费特色学科团队专项项目(G1323523063) （武汉）
