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霍山县表层土壤重金属影响因素及来源辨析

Analysis of influencing factors and sources of heavy metals in surface soil of Huoshan County
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摘要 本文以安徽省霍山县表层土壤重金属元素为研究目标,结合多元统计分析方法与地统计学知识对土壤中重金属元素的分布特征、影响因素及来源进行分析。结果表明:霍山县表层土壤中Cd、Cr、Cu、Ni、Pb和Zn的平均含量分别为0.15、66.67、20.67、29.07、26.32和79.39 mg/kg;各重金属元素的变异系数均小于1,由大到小排列分别为Ni>Cr>Cu>Pb>Cd>Zn;通过相关性分析发现,除Cd与Cu外,其余元素间均存在极显著相关性,其中Cr与Ni为强相关;由主成分分析可知,Zn、P和土壤粘粒在主成分1上的载荷绝对值最大,Cd、Pb、N和土壤有机质在主成分2上的载荷绝对值最大,Cr、Ni和Cu在主成分3上的载荷绝对值最大,分析表明主成分1可能代表成土母质与农业磷肥的施用,主成分2主要代表大气降尘,主成分3则代表基岩地层。 In this paper,heavy metal elements in surface soil of Huoshan County of Anhui Province were studied.The distribution characteristics,influencing factors and sources of heavy metal elements in soil were analyzed by combining multivariate statistical analysis method and geostatistics knowledge.The results showed that the average contents of Cd,Cr,Cu,Ni,Pb and Zn in surface soil of Huoshan County were 0.15,66.67,20.67,29.07,26.32 and 79.39 mg/kg,respectively.The coefficients of variation of all heavy metal elements are less than 1,and the order from large to small is Ni>Cr>Cu>Pb>Cd>Zn.The correlation analysis showed that except for Cd and Cu,the other elements had extremely significant correlation,among which Cr and Ni were strongly correlated.According to the principal component analysis,the absolute value of load of Zn,P and soil clay on principal component 1 is the largest;the absolute value of load of Cd,Pb,N and soil organic matter on principal component 2 is the largest;the absolute value of load of Cr,Ni and Cu on principal component 3 is the largest.The analysis indicates that principal component 1 May represent the application of soil parent material and agricultural phosphorus fertilizer.Principal component 2 mainly represents atmospheric dust fall,and principal component 3 represents bedrock formation.
作者 李振雄 胡博文 王振华 郭鑫鑫 LI Zhen-xiong;HU Bo-wen;WANG Zhen-hua;GUO Xin-xin(Land Resources Exploration Center of Hebei Provincial Bureau of Geology and Mineral Resources Exploration and Development(Hebei Provincial Mining and Geological Disaster Emergency Rescue Center),Shijiazhuang 050081,Hebei)
出处 《地下水》 2024年第5期134-138,共5页 Ground water
关键词 霍山县 土壤重金属 分布特征 影响因素 来源 Huoshan County soil heavy mentals distribution characteristics influence factors sources
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