The role of earthworms (Eisenia fetida) in influencing bioavailability of heavy metals in soils
文献类型：期刊论文
| 作者 | Wen, B; Hu, XY; Liu, Y; Wang, WS; Feng, MH; Shan, XQ |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2004 |
| 卷号 | 40期号:3页码:181-187 |
| 关键词 | earthworm dissolved organic carbon heavy metal fractionation microbial populations availability |
| 英文摘要 | The effects of earthworm (Eisenia fetida) activity on soil pH, dissolved organic carbon (DOC), microbial populations, fraction distribution and bioavailability of heavy metals (Zn, Cu, Cr, Cd, Co, Ni, and Pb) in five Chinese soils were investigated using pot experiments. A three-step extraction procedure recommended by the European Community Bureau of Reference (BCR; now Standards, Measurements and Testing Programme of the European Community) was used to fractionate the metals in soils into water soluble, exchangeable and carbonate bound (B1), Fe-oxides and Mn-oxides bound (B2) and organic matter and sulfide bound (B3). After the soils were treated with earthworms, the soil pH, water-soluble metal fraction and DOC increased. A significant correlation was obtained between the increased DOC and the increased metals in the water-soluble fraction. The heavy metals in fraction B1 increased after earthworm treatments, while those in fraction B3 decreased. No significant differences were observed for heavy metals in fraction B2. The microbial populations in soil were enumerated with the dilution plate method using several media in the presence of earthworms. The microbial populations increased due to earthworm activity. The biomass of wheat shoots and roots, and the heavy metal concentrations in wheat roots and shoots, were also increased due to the earthworm activity. The present results demonstrated that earthworm activity increases the mobility and bioavailability of heavy metals in soils. |
| 研究领域[WOS] | Agriculture |
| WOS记录号 | WOS:000223263900006 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23491]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wen, B,Hu, XY,Liu, Y,et al. The role of earthworms (Eisenia fetida) in influencing bioavailability of heavy metals in soils[J]. BIOLOGY AND FERTILITY OF SOILS,2004,40(3):181-187. |
| APA | Wen, B,Hu, XY,Liu, Y,Wang, WS,Feng, MH,&Shan, XQ.(2004).The role of earthworms (Eisenia fetida) in influencing bioavailability of heavy metals in soils.BIOLOGY AND FERTILITY OF SOILS,40(3),181-187. |
| MLA | Wen, B,et al."The role of earthworms (Eisenia fetida) in influencing bioavailability of heavy metals in soils".BIOLOGY AND FERTILITY OF SOILS 40.3(2004):181-187. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。