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用不同方法测定土壤剖面中 Cd,Zn,Cu,Pb,Ni,Cr,Hg,As,Mn 和 Ti 十个元素以及有机质和 pH 值。本研究旨在了解土壤中十个元素背景含量与有机质和 pH 值的关系。研究结果表明,土壤有机质与重金属元素的单相关,可因地区不同而有所差异,其中以上海地区较为明显。因 pH 值变化不大,它与重金属元素无明显单相关。与单相关不同,土壤 pH 和有机质与土壤重金属元素的复相关,基本呈现一个良好的正相关,说明在生产和自然条件下,复相关指标较单相关指标更符合土壤作为一个生态环境的实际情况。
Different methods were used to determine the ten elements of Cd, Zn, Cu, Pb, Ni, Cr, Hg, As, Mn and Ti, and the organic matter and pH in the soil profile. The purpose of this study is to understand the relationship between the background content of ten elements in soil and organic matter and pH value. The results show that the single correlation between soil organic matter and heavy metal elements may vary from region to region, of which the Shanghai region is more obvious. Due to the small change of pH, it has no obvious single correlation with heavy metal elements. Different from the single correlation, the soil pH and the complex correlation between organic matter and heavy metal elements in soil show a good positive correlation, which shows that under the production and natural conditions, the multiple correlation index is more in line with the actual situation of the soil as an ecological environment than the single correlation index .