| 外源稀土和磷素在土柱中的相互作用 |
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| 作者姓名： | LIANG Tao SONG Wen-Chong WANG Ling-Qing P. J. A. KLEINMAN CAO Hong-Ying |
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| 作者单位： | LIANG Tao,SONG Wen-Chong,WANG Ling-Qing,CAO Hong-Ying(Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China);P.J.A.KLEINMAN(USDA-ARS,Pasture Systems and Watershed Management Research Unit,University Park,PA 16802-3702,USA) |
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| 基金项目： | *1 National Natural Science Foundation of China (Nos.40871225 and 40571146) and the Short-Term Visiting Program for Advanced Scholars, Chinese Academy of Sciences. |
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| 摘 要： | Rare earth elements (REEs) increasingly used in agriculture as an amendment for crop growth may help to lessen environmental losses of phosphorus (P) from heavily fertilized soils. The vertical transport characteristics of P and REEs, lanthanum (La), neodymium (Nd), samarium (Sm), and cerium (Ce), were investigated with addition of exogenous REEs at various doses to packed soil columns (20 cm deep). Vertical transfers of REEs and P were relatively small, with transport depths less than 6 cm for most REEs and P. Export of applied REEs in leachate accounted for less that 5% of inputs. The addition of Ce, Nd and Sm to soil columns significantly decreased concentrations of extractable soil P up to a depth of 4 cm, with soil P concentrations unaffected at depths > 4 cm. In general, REEs had little effect on the vertical leaching of P in packed soil columns.
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| 关 键 词： | extractable soil P manure mobility translocation vertical transport |
| 收稿时间： | 10 December 2009 |
Interactions between exogenous rare earth elements and phosphorus leaching in packed soil columns |
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| LIANG Tao,SONG Wen-Chong,WANG Ling-Qing,P. J. A. KLEINMAN,CAO Hong-Ying.Interactions between exogenous rare earth elements and phosphorus leaching in packed soil columns[J].Pedosphere,2010,20(5):616-622. |
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| Authors: | LIANG Tao SONG Wen-Chong WANG Ling-Qing P J A KLEINMAN and CAO Hong-Ying |
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| Institution: | Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101 (China)
;;Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101 (China);Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101 (China);USDA-ARS, Pasture Systems and Watershed Management Research Unit, University Park, PA 16802-3702 (USA);Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101 (China) |
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| Abstract: | Rare earth elements (REEs) increasingly used in agriculture as an amendment for crop growth may help to lessen environmental losses of phosphorus (P) from heavily fertilized soils. The vertical transport characteristics of P and REEs, lanthanum (La), neodymium (Nd), samarium (Sm), and cerium (Ce), were investigated with addition of exogenous REEs at various doses to packed soil columns (20 cm deep). Vertical transfers of REEs and P were relatively small, with transport depths less than 6 cm for most REEs and P. Export of applied REEs in leachate accounted for less that 5% of inputs. The addition of Ce, Nd and Sm to soil columns significantly decreased concentrations of extractable soil P up to a depth of 4 cm, with soil P concentrations unaffected at depths > 4 cm. In general, REEs had little effect on the vertical leaching of P in packed soil columns. |
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| Keywords: | extractable soil P manure mobility translocation vertical transport |
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