生态科学2025，Vol.44Issue(4)：39-48,10.DOI:10.14108/j.cnki.1008-8873.2025.04.005
西宁城市湿地沉积物重金属空间分异特征及生态风险评估
Spatial variation characteristics and ecological risk assessment of heavy metals in sediments of Xining urban wetlands
摘要
Abstract
The spatial variation characteristics and ecological risk assessment of heavy metals in wetland sediments were carried out in the Xining urban wetlands.A total of 55 sediment samples were collected from five areas,consisting Huangshui river,Haihu,Huoshaogou,Beichuan and Ninghu Wetland.Geo-accumulation Index(GI)and Potential Ecological Risk Index(PERI)were used to assess the pollution degree and potential ecological risk of seven heavy metals(Cr,Cd,Cu,Ni,Pb,Zn,As)in sediments.The results showed that:(1)Cd,Cu,Zn,and Pb were significantly disturbed by anthropogenic activities(CV>70%),showing different degrees of heavy mental enrichment(p<0.05).(2)The main contribution to the ecological risk of heavy metals in wetland sediments were Cd(Eir=192.92)and Pb(Eir=52.97).The potential ecological risk was higher in the Beichuan(RI=480.28)than that in the Haihu(RI=190.25),Huoshaogou(RI=252.68),Huangshui river(RI=182.44),and Ninghu(RI=171.84).(3)Multivariate statistical analysis showed that Cd,Cu,Pb,and Zn were significantly correlated with each other(p<0.01)and might be derived from similar anthropogenic sources.Cr,Ni,and As might come from similar natural sources.关键词
城市湿地/沉积物/重金属/风险评估Key words
urban wetland/sediments/heavy metals/risk assessment分类
资源环境引用本文复制引用
刘泽碧,毛旭锋,魏晓燕,宋秀华,谢顺邦,于红妍,王蕾,唐文家..西宁城市湿地沉积物重金属空间分异特征及生态风险评估[J].生态科学,2025,44(4):39-48,10.基金项目
国家自然科学基金项目(52070108) （52070108）
青海省科技厅基础研究项目(2022-ZJ-718)中科院西部青年学者计划支持 （2022-ZJ-718）
