| 澳大利亚东部地区酸性硫酸盐表土的一些重金属的特征 |
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| 作者姓名： | C. LIN D. MCCONCHIE R. T. BUSH L. A. SULLIVAN M. ROSICKY |
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| 作者单位： | School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia);School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia);School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia);School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia);School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia) |
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| 基金项目： | *1supported by a grant from Australian Research Council. |
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| 摘 要： | Forty-five acid sulfate topsoil samples (depth < 0.5 m) from 15 soil cores at 11 locations along the New South Wales coast, Australia, were selected to investigate the chemical behavior of Zn, Mn, Cr, Co and Pb in these soils. The amount of HCl-extractable Mn was much smaller than the mean value of the total Mn documented for other soils. This may be attributed to enhanced mobilization of Mn from the soils under the extremely acidic and seasonally flooded conditions encountered in the investigated soils. The pH-dependency of soluble Zn and Mn was strongly affected by the availability of acid reactive Zn and Mn compounds. There were fairly good relationships between soluble Zn and acid reactive Zn compounds, and between soluble Mn and acid reactive Mn compounds. Soluble Zn and soluble Mn concentrations were important controls on exchangeable Zn and Mn concentrations, respectively. In contrast to the suggestion by other authors that adsorption of Co was closely associated with Mn oxides present in soils, the exchangeable Co in the investigated acid sulfate soils was not clearly related to the abundance of Mn minerals. In addition to the fact that there are few Mn minerals present in the soils, this might also be because the availability of cation exchange sites on the crystal surfaces of Mn oxides was reduced under extremely acidic conditions.
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| 关 键 词： | 灌溉系统 温室 氮肥 水稻 细菌 三价铁离子 分布密度 |
Characteristics of some heavy metals in acid sulfate topsoils, eastern Australia |
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| C. LIN,D. MCCONCHIE,R. T. BUSH,L. A. SULLIVAN,M. ROSICKY.Characteristics of some heavy metals in acid sulfate topsoils, eastern Australia[J].Pedosphere,2001,11(1):31-37. |
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| Authors: | C LIN D MCCONCHIE R T BUSH L A SULLIVAN and M ROSICKY |
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| Institution: | School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia);School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia);School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia);School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia);School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia) |
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| Abstract: | Forty-five acid sulfate topsoil samples (depth < 0.5 m) from 15 soil cores at 11 locations along the New South Wales coast, Australia, were selected to investigate the chemical behavior of Zn, Mn, Cr, Co and Pb in these soils. The amount of HCl-extractable Mn was much smaller than the mean value of the total Mn documented for other soils. This may be attributed to enhanced mobilization of Mn from the soils under the extremely acidic and seasonally flooded conditions encountered in the investigated soils. The pH-dependency of soluble Zn and Mn was strongly affected by the availability of acid reactive Zn and Mn compounds. There were fairly good relationships between soluble Zn and acid reactive Zn compounds, and between soluble Mn and acid reactive Mn compounds. Soluble Zn and soluble Mn concentrations were important controls on exchangeable Zn and Mn concentrations, respectively. In contrast to the suggestion by other authors that adsorption of Co was closely associated with Mn oxides present in soils, the exchangeable Co in the investigated acid sulfate soils was not clearly related to the abundance of Mn minerals. In addition to the fact that there are few Mn minerals present in the soils, this might also be because the availability of cation exchange sites on the crystal surfaces of Mn oxides was reduced under extremely acidic conditions. |
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| Keywords: | acid sulfate soil heavy metal pH-dependency |
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