摘要
研究以黄河三门峡湿地为研究对象,分析重金属分布特征并进行生态风险评价。通过土壤采样,利用原子荧光法和石墨炉原子吸收法测定重金属含量;利用地累积指数评价法与潜在生态风险指数评价法,评价黄河湿地重金属污染展开潜在风险。根据研究结果可知:黄河三门峡湿地土壤中,Cd、Hg、Cu、Cr元素的浓度含量相对较高;湿地内重金属污染大多位于河道附近滩地、鱼塘范围内,耕地、居民生活区次之、生态保护区无污染等阶梯状态;黄河三门峡生态整体处于中等风险区域,Cd元素以及Hg元素在个别位置生态风险为较强等级,属于潜在的风险源。
This study takes the Sanmenxia Wetland of the Yellow River as the research object,analyzes its heavy metal distribution characteristics,and conducts ecological risk assessment.Determine heavy metal content through soil sampling using atomic fluorescence spectrometry and graphite furnace atomic absorption spectrometry;Using the land accumulation index evaluation method and the potential ecological risk index evaluation method,evaluate the potential risks of heavy metal pollution in the Yellow River wetland.According to the research results,the concentration of Cd,Hg,Cu,and Cr elements in the soil of the Sanmenxia wetland on the Yellow River is relatively high;Most of the heavy metal pollution in wetlands is located near riverbanks and fish ponds,followed by cultivated land,residential areas,and ecological protection areas with no pollution;The overall ecological risk of Sanmenxia on the Yellow River is in a medium risk area,while Cd and Hg elements have strong ecological risks in certain locations,which belong to potential risk sources.
作者
曹静
孙育玉
马云霞
张梦华
张静
Cao Jing;Sun Yuyu;Ma Yunxia;Zhang Menghua;Zhang Jing(Sanmenxia ecological Environmental monitoring center of Henan province,Sanmenxia 472000,China;Sanmenxia Centre for Eco-environmental technology,Sanmenxia 472000,China;Ecological Environment Monitoring and security Center of Henan Province,Zhengzhou 450046,China)
出处
《环境科学与管理》
2025年第12期184-189,共6页
Environmental Science and Management
关键词
黄河湿地
重金属
分布特征
生态风险评价
地累积指数评价方法
Yellow River Wetland
heavy metals
distribution characteristics
ecological risk assessment
evaluation method of land accumulation index
