Analysis of influencing factors and sources of heavy metals in surface soil of Huoshan County
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 multi-variate 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,respective-ly.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 correla-tion,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 lar-gest.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.
Huoshan Countysoil heavy mentalsdistribution characteristicsinfluence factorssources
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万方数据
