Impacts of soybean growth on Cu speciation and distribution in two rhizosphere soils
文献类型：期刊论文
| 作者 | Yu, Y; Zhou, QX; Zhou, QX, Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2006 |
| 卷号 | 42期号:5页码:450-456 |
| 关键词 | Cu Speciation Distribution Soybean Rhizosphere |
| ISSN号 | 0178-2762 |
| 英文摘要 | The effects of soybean growth on Cu speciation and distribution in two artificially Cu-contaminated soils (phaiozem, a Mollisol, and burozem, an Alfisol) were investigated using a rhizobox culture system followed by the sequential chemical extraction technique. The rhizosphere soils in the rhizobox were separated with nylon cloth into 11 sections: a central zone (4 mm in width) and ten side rhizosphere subzones (1 mm in width). The Cu fractions in Cu-contaminated phaiozem could be ranked as EXCH (exchangeable Cu)< ACID (HAc extractable Cu)< FeMnOX (bound to Fe-Mn oxides)< OM (bound to organic matter)< RES (residual Cu), and in Cu-contaminated burozem as EXCH < FeMnOX < OM < ACID < RES. Soybean growth resulted in an obvious increase of EXCH-Cu in the rhizosphere soil in the first 4 weeks of incubation, with the biggest increase in the central zone. Compared with the unplanted control soil, the content of ACID-Cu in soybean rhizosphere increased in the first 2-3 weeks of incubation and then decreased towards the end of the experiment (6 weeks). The increasing tendency was also observed in the FeMnOX-Cu fraction during the first 3 weeks and the OM-Cu fraction during the first 4 weeks, and their increments were obviously larger than those of the EXCH-Cu and ACID-Cu fractions. This suggested that more RES-Cu activated by the action of soybean roots was partitioned into the less phytoavailable forms, FeMnOX-Cu and OM-Cu. This may be of a benefit to the normal growth of soybean in Cu-contaminated soils. By the end of cultivation, the content of FeMnOX-Cu decreased, but only a small part of Cu was absorbed by soybean, being most of the Cu loss partitioned into the RES-Cu fraction. |
| 学科主题 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000238858800012 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54931]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Zhou, QX, Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Y,Zhou, QX,Zhou, QX, Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China. Impacts of soybean growth on Cu speciation and distribution in two rhizosphere soils[J]. BIOLOGY AND FERTILITY OF SOILS,2006,42(5):450-456. |
| APA | Yu, Y,Zhou, QX,&Zhou, QX, Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China.(2006).Impacts of soybean growth on Cu speciation and distribution in two rhizosphere soils.BIOLOGY AND FERTILITY OF SOILS,42(5),450-456. |
| MLA | Yu, Y,et al."Impacts of soybean growth on Cu speciation and distribution in two rhizosphere soils".BIOLOGY AND FERTILITY OF SOILS 42.5(2006):450-456. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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