| 不同类型外源稀土化合物与农业面源磷流失关联性的对比 |
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| 引用本文： | 梁涛,宋文冲,王凌青,崇忠义,顾培,P.Kleinman.不同类型外源稀土化合物与农业面源磷流失关联性的对比[J].农业环境科学学报,2010,29(4). |
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| 作者姓名： | 梁涛 宋文冲 王凌青 崇忠义 顾培 P.Kleinman |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101
2. USDA-ARS,Pasture Systems and Watershed Management Research Unit,University Park,PA 16802-3702,USA |
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| 基金项目： | 国家自然科学基金项目(40871225,40571146) |
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| 摘 要： | 通过室内人工模拟降雨实验,在稳定雨强条件下,分别观察了LaCl3、La2O3和P随地表径流流失的特征,对比了稀土氧化物和稀土氯化物与土施畜禽肥料P随暴雨径流流失的相关性。结果表明,径流量和沉积物量在产流开始后的短时间内迅速增加,径流中总La和总P均有共同迁移的特征,对于添加不同剂量LaCl3和La2O3的土槽,La和P随地表径流的流失量之间都呈现显著或极显著的相关,稀土元素La的氧化物和氯化物都能较好地示踪总磷随暴雨径流流失的过程。
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| 关 键 词： | 源解析 非点源污染 磷 LaCl3 La2O3 |
Association of Exogenous Ianthanum Oxide and Lanthanum Chloride with Phosphorous Loss from Soils |
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| LIANG Tao,SONG Wen-chong,WANG Ling-qing,CHONG Zhong-yi,GU Pei,P.Kleinman.Association of Exogenous Ianthanum Oxide and Lanthanum Chloride with Phosphorous Loss from Soils[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2010,29(4). |
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| Authors: | LIANG Tao SONG Wen-chong WANG Ling-qing CHONG Zhong-yi GU Pei PKleinman |
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| Institution: | 1.Institute of Geographic Sciences and Natural Resources Research/a>;CAS/a>;Beijing 100101/a>;China/a>;2.USDA-ARS/a>;Pasture Systems and Watershed Management Research Unit/a>;University Park/a>;PA 16802-3702/a>;USA |
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| Abstract: | Non-point source pollution is one of the main sources of water pollution.Increasing inputs of phosphorus to agricultural land have led to accelerated freshwater eutrophication.There is a hypothesis that transport of exogenous rare earths can be related to phosphorus in soils.An investigation of the behavior of rare earths can be helpful for a better understanding of the transport mechanisms of phosphorus in soils.In this study,exogenous lanthanum oxide(La2O3)and lanthanum chloride(LaCl3)were added together ... |
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| Keywords: | source appointment non-point sources pollution phosphorous LaCl3 La2O3 |
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