水土保持通报2025，Vol.45Issue(2)：1-11,11.DOI:10.13961/j.cnki.stbctb.2025.02.001
钱江源国家公园水田土壤重金属污染特征、来源分析及健康风险评价
Characteristics,source analysis,and health risk assessment of heavy metal pollution in paddy soil at Qianjiangyuan National Park
摘要
Abstract
[Objective]The characteristics of heavy metal content in paddy soil at Qianjiangyuan National Park were explored,and its pollution level was assessed.The sources of heavy metals were analyzed,and the associated human health risks were evaluated,in order to provide a reference basis for the prevention and control of soil heavy metal pollution and soil protection.[Methods]The pH value and contents of heavy metals,including Cd,Pb,Hg,Cr,As,Ni,Cu,and Zn,of 61 soil samples were determined.Index,factor and cluster analyses were employed to assess the characteristics of and ecological risks posed by the heavy metal pollution,analyze their sources,and evaluate human health risks.[Results]① The surface soil of the paddy fields was acidic.The average Cd,Pb,Hg,Cr,As,Ni,Cu,and Zn contents were 0.19,32.74,0.13,67.06,4.43,24.90,21.51,and 94.60 mg/kg,respectively.The average contents of Hg,Cr,Ni,Cu,and Zn exceeded the Zhejiang provincial soil background values by 1.32,1.71,2,1.19,and 1.13 times,respectively.② The average contents of the eight heavy metals were lower than the corresponding risk screening values for agricultural land soil,as represented by the average heavy metal content in the paddy fields.The exceedance rates of sampling points for Cd,Ni,and Cr were 6.56％,3.28％,and 1.64％,respectively.③ The results of factor analysis and the other methods showed that the soil heavy metal sources were predominantly anthropogenic and were the result of a combination of human and natural influences.The overall carcinogenic health risk for children was deemed tolerable.[Conclusion]The level of heavy metal pollution in the paddy soil at Qianjiangyuan National Park was low,as was the overall ecological risk.However,pollution risks were associated with Cr and Ni.The heavy metal As is the primary carcinogenic factor affecting human health.关键词
钱江源国家公园/土壤重金属/污染防控/因子分析/健康风险评价Key words
Qianjiangyuan National Park/soil heavy metals/pollution prevention and control/factor analysis/health risk assessment分类
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武昊天,蓝文超,徐浙,吴明,邵学新..钱江源国家公园水田土壤重金属污染特征、来源分析及健康风险评价[J].水土保持通报,2025,45(2):1-11,11.基金项目
钱江源国家公园科技项目"钱江源地役权改革后农田土壤环境监测分析研究"(QZLHKH2023-2,QZLHKH2024-1) （QZLHKH2023-2,QZLHKH2024-1）
中国林业科学研究院亚热带林业研究所创新研究项目(RISFZ-2023-01) （RISFZ-2023-01）
