环境工程学报2025，Vol.19Issue(5)：1090-1101,12.DOI:10.12030/j.cjee.202409016
王母湖、野猪湖沉积物重金属污染特征、生态风险及溯源
Pollution characteristics,ecological risks and source apportionment of heavy metals in sediments of Wangmu Lake and Yezhu Lake
摘要
Abstract
To investigate the pollution characteristics,ecological risks,and potential sources of heavy metals in the surface sediments of Wangmu Lake and Yezhu Lake,and to accurately identify key pollutants and priority-controlled pollution sources,the spatial distribution patterns of eight heavy metal elements(Cr,Ni,Pb,Cu,Cd,As,Hg,Zn)were analyzed.Multiple assessment methods,including the geo-accumulation index,pollution load index,potential ecological risk index,and sediment quality guidelines,were employed to evaluate the contamination levels and ecological risks of heavy metals in the sediments.Additionally,correlation analysis and positive matrix factorization(PMF)modeling were applied to quantitatively identify the contribution of different pollution sources.The results indicated that Hg in the sediments of both lakes posed a moderate ecological risk,with Yezhu Lake exhibiting moderate Hg contamination.Ni was found to frequently induce toxic effects.The key pollutants of concern in both lakes were Hg and Ni.Source apportionment revealed that the heavy metals in the surface sediments of Wangmu Lake and Yezhu Lake primarily originated from four sources:aquaculture activities(32.35％),composite pollution from industrial and agricultural activities(18.23％),traffic-related pollution and atmospheric deposition(32.43％),and natural sources(16.98％).Among them,traffic pollution and atmospheric deposition were identified as the priority-controlled pollution sources for targeted sediment management in both lakes.关键词
沉积物/重金属/污染评价/生态风险/源解析Key words
surface sediment/heavy metal/pollution assessment/ecological risk/source analysis分类
环境科学引用本文复制引用
唐志,刘洋,杨森,熊扬福,付胜波,汤方岭,林毅,杨飞..王母湖、野猪湖沉积物重金属污染特征、生态风险及溯源[J].环境工程学报,2025,19(5):1090-1101,12.基金项目
湖北省自然科学基金地质创新发展联合基金项目(2023AFD222) （2023AFD222）
湖北省地质局资助项目(KJ2023-30) （KJ2023-30）
湖北省地质局第六地质大队资助项目(DKJ2022-02) （DKJ2022-02）
