中国土壤与肥料Issue(1)：62-72,11.DOI:10.11838/sfsc.1673-6257.24255
云南景洪茶园土壤重金属分布特征及其与磁化率的相关性研究
Vertical distribution characteristics of heavy metals and their correlation with magnetic susceptibility in tea plantation soil of Jinghong Yunnan
摘要
Abstract
In this study,54 samples were collected from 9 soil profiles of different tea ages to analyze the distribution characteristics and correlation of heavy metals(Cr,Cu,Pb,Zn,As,Cd,Hg)and magnetic susceptibility(χlf,χfd%,χpara)in soil.The results showed that the spatial variability of heavy metal content in the study area was medium,which was mainly affected by natural factors.Heavy metal pollution index content was at a safe level,and the soil was uncontaminated.The results of correlation analysis and principal component analysis showed that Cr,Pb,As,Hg,Zn and Cu were mainly derived from natural soils,and Cd might be mainly derived from organic fertilizers.Combined with magnetic parameter analysis,it was found the low frequency mass susceptibility χlf was positively correlated with the contents of Cr,Zn and As,and the frequency susceptibility χfd%was not correlated with the contents of heavy metals.High-field magnetic susceptibility χpara was significantly positively correlated with the contents of heavy metals Cr,Pb,As,Hg and Zn.This study showed that soil magnetic parameters χlf and χpara also had a good indication of the distribution of heavy metal elements from natural soil.At the same time,this study found that the correlation coefficient R between the high field magnetic susceptibility χpara and the content of five heavy metals was greater than 0.8,and the distribution characteristics on the profile were also in good agreement with the distribution of heavy metals,indicating that this parameter could indicate the migration and accumulation of heavy metals in the soil.关键词
土壤/重金属/磁化率/相关性Key words
soil/heavy metals/magnetic susceptibility/relevance引用本文复制引用
叶俊民,任二慧,罗鑫,李海侠,李刚强,陈宇东..云南景洪茶园土壤重金属分布特征及其与磁化率的相关性研究[J].中国土壤与肥料,2025,(1):62-72,11.基金项目
国家自然科学基金(42064005). （42064005）
