摘要
【目的】查明山东东营市三角洲地区不同土地类型的土壤重金属污染及生态状况,及时了解并保护土壤质量安全。【方法】利用内美罗综合指数法、潜在危害指数法等对研究区As、Hg、Cr、Pb、Ni、Cu、Zn、Cd共8种重金属元素的富集程度和污染级别生态风险进行评价。【结果】研究区表层土壤8种重金属元素的平均含量的排序为Zn>Cr>Ni>Cu>Pb>As>Cd>Hg,其平均含量分别为67.68、63.73、30.05、21.11、20.50、10.53、0.14和0.02 mg/kg。其中,As、Ni、Zn、Cd 4种元素实测均值高于山东省土壤元素背景值,Cr、Pb、Cu 3种元素实测平均值低于山东省土壤元素背景值,Hg元素实测均值接近于山东省土壤元素背景值。【结论】研究区内不同土地类型的综合污染风险较低,采集的土壤样均为安全等级。
【Objectives】To find out the soil heavy metal pollution and ecological status of different land types in the delta area of Dongying City,Shandong Province,and timely understand and protect the safety of soil quality.【Methods】The ecological risks of enrichment and pollution levels in 8 heavy metal elements(As,Hg,Cr,Pb,Ni,Cu,Zn,and Cd)in the study area were evaluated using the Nemerow comprehensive index and potential ecological risk index.【Results】The average contents of 8 heavy metal elements in the surface soil of the study area were ranked as Zn>Cr>Ni>Cu>Pb>As>Cd>Hg,with average contents of 67.68,63.73,30.05,21.11,20.50,10.53,0.14,and 0.02 mg/kg,respectively.Among them,the measured average values of As,Ni,Zn,and Cd were higher than the background values of soil elements in Shandong Province,while the measured average values of Cr,Pb,and Cu were lower than the background values of soil elements in Shandong Province.The measured average value of Hg was close to the background value of soil elements in Shandong Province.【Conclusions】The comprehensive pollution risks of different land types in the study area were relatively low,and the soil samples collected were all of the safety levels.
作者
陈晨
王兵
王寒冰
窦文骏
CHEN Chen;WANG Bing;WANG Hanbing;DOU Wenjun(Yantai Coastal Zone Geological Survey Center,China Geological Survey,Yantai 264004,Shandong,China)
出处
《自然保护地》
CSCD
2023年第3期94-102,共9页
Natural Protected Areas
基金
中国地质调查局地质调查项目(ZD20220143)。
关键词
土壤重金属污染
内美罗综合指数法
潜在危害指数法
黄河三角洲地区
soil heavy metals pollution
Nemerow comprehensive index
potential ecological risk index
Yellow river delta region
