摘要
以黑龙江省扎龙湿地的土壤为试材,利用相关分析和通径分析研究了土壤理化性质与重金属含量之间的关系。结果表明:全K与Fe、全K和Co、全K和Cr含量之间具有明显的负相关关系,相关系数分别为-0.866、-0.771和-0.850;Cu和Fe、Co和Cu、Cr和Cu、Fe和Co、Fe和Cr以及Cr和Co之间具有明显的正相关关系,相关系数分别为0.832、0.844、0.807、0.956、0.816、0.830;Pb、Cd、Cr、Mn分别对pH具有较强的正向直接作用;Cr对电导率表现为很大正向的直接作用;Cr、Pb分别对全K有很大的负向直接作用;Fe、Zn、Co、Cr、Cd、Mn分别对Ca2+具有较强的正向直接作用;Pb对Na+有很强的正向直接作用;Cr、Co、Cd、Mn、Fe分别对Ba2+的直接正向作用最大。
A correlation between the soil properties and heavy metals contents isolated from soils of Zhalong Wetlands in Heilongjiang was studied using correlation analysis and path analysis. The results showed that there was extremely significantly negative correlation between heavy metals and total K, Fe and total K,C^o and total K, Cr and total K the relative coefficients were --0. 866, -- 0. 771, and -- 0. 850 ; however, there was extremely significantly positive correlation between heavy metals,Cu and Fe,Co and Cu,Cr and Cu, Fe and Co, Fe and Cr, Cr and Co the relative coefficients were 0. 832,0. 844,0. 807,0. 956,0. 816 and 0. 830;Pb,Cd,Cr and Mn had strong positive direct effect on pH;Cxt indicator had the lastest positive direct effect on conductivity; Cr and Pb had strong negative direct effect on total K;Pb,Cd,Cr and Mn had strong positive direct effect on Ca2＋ ;Pb had the lastest positive direct effect on Na＋ ;Co,Cr,Cd,Mn and Fe had the lastest positive direct effect on Ba2＋ ;as well as soil properties indicators also had indirect effects on heavy metals through other indicators.
出处
《北方园艺》
CAS
北大核心
2013年第24期167-171,共5页
Northern Horticulture
基金
黑龙江省自然科学基金资助项目(C201240)
关键词
土壤理化性质
重金属
相关分析
通径分析
soil properties
heavy metals
correlation analysis
path analysis
