Random numbers of heavy metal(Cd, As, and Pb) concentrations were created by Monte Carlo simulation of 16 representative sites in five soil zones from published papers for subsequent research. Ordinary kriging and sig...Random numbers of heavy metal(Cd, As, and Pb) concentrations were created by Monte Carlo simulation of 16 representative sites in five soil zones from published papers for subsequent research. Ordinary kriging and significant analyses were used in a dataset of the 16 areas.Concentration of heavy metals in topsoil was found to be mainly influenced by zonality, non-zonality, and anthropogenic inputs. Nevertheless, human-induced correlations among heavy metals could not be detected on a regional spatial scale. Soil zone and landform were found to be representations of zonality and non-zonality, respectively.It was found that in east China, heavy metals accumulated in the south, especially the southwest, and were not uniform in each soil zone, indicating that zonality was not the unique influencing factor of soil environment quality. Both soil zone and landform may be responsible for heavy metal concentrations. An analysis of variance, coefficients of divergence analysis, was applied to assess the effects of soil zone and landforms on the variation of heavy metal concentrations in the study region. The influence of soil zone and landform was relatively homogeneous in areas of the north; while in the south, landform played a dominating role. Therefore, soil environment quality formed mainly under the effect of landform. This was mainly due to the fact that landform in fluences other natural environment elements including climate, further impacting the division of soil zone.展开更多
基金supported by the Special Public Welfare Scientific Project of the Ministry of Land and Resources, Multi-source Data Fusion and Regionalization of Agricultural Land with Heavy Metal Exceeding the Standard (No.201511082-05)Science and Technology Service Network Initiative (KFJ-EW-STS013)
文摘Random numbers of heavy metal(Cd, As, and Pb) concentrations were created by Monte Carlo simulation of 16 representative sites in five soil zones from published papers for subsequent research. Ordinary kriging and significant analyses were used in a dataset of the 16 areas.Concentration of heavy metals in topsoil was found to be mainly influenced by zonality, non-zonality, and anthropogenic inputs. Nevertheless, human-induced correlations among heavy metals could not be detected on a regional spatial scale. Soil zone and landform were found to be representations of zonality and non-zonality, respectively.It was found that in east China, heavy metals accumulated in the south, especially the southwest, and were not uniform in each soil zone, indicating that zonality was not the unique influencing factor of soil environment quality. Both soil zone and landform may be responsible for heavy metal concentrations. An analysis of variance, coefficients of divergence analysis, was applied to assess the effects of soil zone and landforms on the variation of heavy metal concentrations in the study region. The influence of soil zone and landform was relatively homogeneous in areas of the north; while in the south, landform played a dominating role. Therefore, soil environment quality formed mainly under the effect of landform. This was mainly due to the fact that landform in fluences other natural environment elements including climate, further impacting the division of soil zone.
