南京林业大学学报（自然科学版）2026，Vol.50Issue(1)：112-120,9.DOI:10.12302/j.issn.1000-2006.202405036
青藏高原东缘海东市表土重金属污染特征及源解析
Characteristics of heavy metal pollution in topsoil of Haidong City on the eastern edge of the Qinghai-Xizang Plateau and source parsing
摘要
Abstract
[Objective]This study explores heavy metal contamination characteristics and sources in the urban soil of Haidong City,located at the eastern edge of the Qinghai-Xizang Plateau,focusing on the topsoil(0-2 cm).[Method]Soil samples from Haidong City were analyzed for eight key heavy metal elements(Cd,Cr,Cu,Mn,Ni,Pb,Fe and Zn).The pollution status of these metals was assessed using the single-factor pollution index(Pi)method and the geoaccumulation index(Igeo)approach.Correlation and cluster analyses were performed to determine the sources of heavy metal contamination.[Result]Based on Pi and Igeo indices,seven of the eight heavy metals(excluding Cr)showed varying degrees of enrichment in Haidong's topsoil.Correlation and cluster analyses revealed that Cr,Ni,Mn,Fe and Cu were primarily attributed to natural processes such as soil formation and weathering,whereas Cd,Pb and Zn were mainly linked to traffic-related pollution.[Conclusion]In Haidong City,the primary sources of heavy metal pollution in soil are natural processes and transportation.For the eastern margin of the Qinghai-Xizang Plateau,significant contributors include natural sources,transportation,and mining activities.Variations in pollution levels and sources are influenced by the differing economic structures of cities.关键词
土壤重金属/污染特征/源解析/青藏高原东缘/海东市Key words
soil heavy metals/pollution characteristics/source analysis/the eastern edge of the Qinghai-Xizang Plateau/Haidong City分类
资源环境引用本文复制引用
陈霞,刘亮,王彦瑜,赖涓涓,李梦迪..青藏高原东缘海东市表土重金属污染特征及源解析[J].南京林业大学学报（自然科学版）,2026,50(1):112-120,9.基金项目
国家自然科学基金项目(42277352). （42277352）
