Distribution and fractionation of cadmium in soil aggregates affected by earthworms (eisenia fetida) and manure compost
文献类型：期刊论文
| 作者 | Wu, Jingtao1,2; Li, Hanqing1,2; Li, Feng1,2; Zhang, Yanju1,2; Lu, Huanping1,3; Zhuang, Ping1; Mo, Qifeng1,2; Li, Zhian1 |
| 刊名 | Journal of soils and sediments
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 16期号:9页码:2286-2295 |
| 关键词 | Cadmium fractionation Earthworm Manure compost Sequential extraction Soil aggregates |
| ISSN号 | 1439-0108 |
| DOI | 10.1007/s11368-016-1433-2 |
| 通讯作者 | Li, zhian(lizan@scbg.ac.cn) |
| 英文摘要 | The objectives of this study were (1) to investigate the effects of manure compost and earthworms on cd mobility in cd-contaminated soil, (2) to test whether the bioturbation of earthworms reduces the immobilization effect of the manure compost when they are combined, and (3) to explore the distribution of cd in aggregates formed by earthworms with corresponding fractionation analysis. a laboratory experiment was conducted to evaluate the effect of either or both application of manure compost and the earthworms eisenia fetida into cadmium historically contaminated soil on cadmium mobility. soil characteristics and metal concentrations in earthworms and soil were measured, and soil aggregates in the mesocosms were separated for cd fraction analysis based on four steps sequential extraction. manure compost reduced mobile cd based on cacl2 extraction and toxicity characteristic leaching procedure (tclp) test by 60-95 and 25-30 %, respectively. however, earthworm application alone increased cd mobility by 9-15 %. besides, in the presence of manure compost, earthworms further immobilized cadmium to a slight extent. the interaction effect of manure compost and earthworms combined on cd immobilization suggested that earthworms promoted the formation of large macroaggregates (> 2 mm) and the redistribution of cd concentration in soil aggregates. additionally, earthworms reduced carbonate fraction of cd from 42.3-49.6 to 6.3-19.5 % in different aggregates, respectively. and, residual fraction of cd increased from 33.9-42.2 to 63.9-77.5 % simultaneously. the results may be due to the thorough mixture of phosphates and organic matter with cadmium during bioturbation on account of the available form of phosphorus, nitrogen, and cadmium changing to the more recalcitrant form. manure compost addition increased the soil ph, phosphorus, nitrogen, and organic carbon content, and decreased cd mobility. the application of earthworms and manure compost combined exhibited higher efficiency for cadmium immobilization, which can be used for cd remediation due to the redistribution of cd concentration in soil aggregates and the transformation of soluble cd to the residual precipitate fraction. |
| WOS关键词 | CONTAMINATED SOIL ; HEAVY-METALS ; LUMBRICUS-TERRESTRIS ; AGRICULTURAL SOILS ; ORGANIC-MATTER ; CARBON ; COPPER ; BIOAVAILABILITY ; IMMOBILIZATION ; AVAILABILITY |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| WOS类目 | Environmental Sciences ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000382397900012 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375687 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li, Zhian |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Ecol Meteorol Ctr Guangdong Prov, Guangzhou 510650, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Jingtao,Li, Hanqing,Li, Feng,et al. Distribution and fractionation of cadmium in soil aggregates affected by earthworms (eisenia fetida) and manure compost[J]. Journal of soils and sediments,2016,16(9):2286-2295. |
| APA | Wu, Jingtao.,Li, Hanqing.,Li, Feng.,Zhang, Yanju.,Lu, Huanping.,...&Li, Zhian.(2016).Distribution and fractionation of cadmium in soil aggregates affected by earthworms (eisenia fetida) and manure compost.Journal of soils and sediments,16(9),2286-2295. |
| MLA | Wu, Jingtao,et al."Distribution and fractionation of cadmium in soil aggregates affected by earthworms (eisenia fetida) and manure compost".Journal of soils and sediments 16.9(2016):2286-2295. |
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来源：中国科学院大学
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