A root exudates based approach to assess the long-term phytoavailability of metals in biosolids-amended soils
文献类型：期刊论文
| 作者 | Koo, Bon-Jun ; Chen, Weiping ; Chang, Andrew C. ; Page, Albert L. ; Granato, Thomas C. ; Dowdy, Robert H. |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2010-08 |
| 卷号 | 158期号:8页码:2582-2588 |
| 关键词 | Phytoavailability Model Heavy metal Biosolids-amended soil Rhizosphere Root exudates |
| 中文摘要 | Organic acids present in the rhizosphere of growing plants are widely recognized to be responsible for dissolving the solid phase metals in the soil and making them available for plant absorption. We proposed a root exudates-based model to assess the long-term phytoavailability of metals in biosolids-amended soils. The phytoavailability of biosolids-borne metals was defined in terms of a capacity factor and an intensity factor. The plant available metal pool, C(0) (capacity factor, mg kg(-1)), can be estimated by fitting the successive organic acids extraction data to an exponential decay kinetic equation. The field metal removal rate, k (intensity factor, yr(-1)), can be estimated from the successive extraction-based metal release rate through an effective annual organic acid production in the rhizosphere which was found to be characteristic of plant species. The protocol was successfully used to assess the long-term phytoavailability of metals in biosolids-amended soil from two biosolids land application sites. (C) 2010 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000280571500010 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/20947]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Koo, Bon-Jun,Chen, Weiping,Chang, Andrew C.,et al. A root exudates based approach to assess the long-term phytoavailability of metals in biosolids-amended soils[J]. ENVIRONMENTAL POLLUTION,2010,158(8):2582-2588. |
| APA | Koo, Bon-Jun,Chen, Weiping,Chang, Andrew C.,Page, Albert L.,Granato, Thomas C.,&Dowdy, Robert H..(2010).A root exudates based approach to assess the long-term phytoavailability of metals in biosolids-amended soils.ENVIRONMENTAL POLLUTION,158(8),2582-2588. |
| MLA | Koo, Bon-Jun,et al."A root exudates based approach to assess the long-term phytoavailability of metals in biosolids-amended soils".ENVIRONMENTAL POLLUTION 158.8(2010):2582-2588. |
入库方式： OAI收割
来源：生态环境研究中心
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