Chemical criteria to assess risk of phosphorus leaching from urban soils
文献类型：期刊论文
| 作者 | Zhang, GL; Burghardt, W; Yang, JL |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2005-02-01 |
| 卷号 | 15期号:1页码:72-77 |
| 关键词 | assessment leaching phosphorus urban soils |
| ISSN号 | 1002-0160 |
| 通讯作者 | Zhang, GL(glzhang@issas.ac.cn) |
| 英文摘要 | Soils from urban and suburban areas are normally enriched with phosphorus (P). Sixteen urban soils with a wide range of total P concentrations under typical urban land uses were sampled and analyzed for extractable P concentrations using water, sodium bicarbonate and citric acid. Meanwhile the soils were artificially leached in columns and P concentrations in the leachates were determined. With linear regression a two-stage linear relationship was found to exist between concentrations of P in the leachates and soil P contents obtained by various chemical measurements, i.e., there was a "change-point" denoting the critical threshold value for extractable P between the regression lines, above which concentrations of P in leachates increased substantially. These threshold "change-point" values were 1.5 mg kg(-1) for water-soluble P and CaCl2-P, 25 mg kg(-1) for Olsen-P, and 250-350 mg kg(-1) for citric acid-P with the sharpest change and the best predictor [r(2) (upper) = 0.928, r(2) (lower) = 0.807] appearing for Olsen-P. These "change-points" were considered important criteria in assessing the risk of P leaching from urban soils and could be used as standards to delineate and target hazardous areas in urban and suburban areas. |
| 收录类别 | SCI |
| WOS关键词 | DRAINAGE |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000226946600011 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558482 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhang, GL |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Univ Duisburg, Dept Appl Soil Sci, D-45117 Essen, Germany |
| 推荐引用方式 GB/T 7714 | Zhang, GL,Burghardt, W,Yang, JL. Chemical criteria to assess risk of phosphorus leaching from urban soils[J]. PEDOSPHERE,2005,15(1):72-77. |
| APA | Zhang, GL,Burghardt, W,&Yang, JL.(2005).Chemical criteria to assess risk of phosphorus leaching from urban soils.PEDOSPHERE,15(1),72-77. |
| MLA | Zhang, GL,et al."Chemical criteria to assess risk of phosphorus leaching from urban soils".PEDOSPHERE 15.1(2005):72-77. |
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来源：南京土壤研究所
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