Changes in soil microbial biomass and Zn extractability over time following Zn addition to a paddy soil
文献类型：期刊论文
| 作者 | Jiang, XJ; Luo, YM; Liu, SL; Ding, KQ; Wu, SC; Zhao, QG; Christie, P |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2003-02-01 |
| 卷号 | 50期号:6页码:855-861 |
| 关键词 | soil respiration dehydrogenase activity qCO(2) NH4OAc HOAc EDTA trace metals |
| ISSN号 | 0045-6535 |
| 通讯作者 | Luo, YM() |
| 英文摘要 | A laboratory incubation study was conducted using a paddy soil spiked with two quantities of Zn as soluble Zn(NO3)(2) and unamended controls. Three single extractants (1 M ammonium acetate (pH 7.0), 0.43 M acetic acid and 0.05 M EDTA) were used to assess the bioavailability of Zn. Biological community assessments were made for microbial biomass (chloroform fumigation), soil basal respiration and dehydrogenase activity. During the 84-day period of the experiment, addition of Zn at both 500 and 1000 mg kg(-1) had little detectable effect on soil pH. The concentration of NH4OAc-extractable Zn decreased rapidly within the initial six weeks. The concentration of HOAc-extractable Zn showed no decrease during 84 days incubation. EDTA-extractable Zn was greater than NH4OAc- and HOAc-extractable fractions, and showed a similar trend to NH4OAc-extractable after incubation. Microbial biomass, soil basal respiration and dehydrogenase activity all decreased over time during 84 days incubation. Addition of Zn resulted in a significant increase in specific respiration (qCO(2)). Microbial biomass and dehydrogenase activity did not appear to be influenced by added Zn, probably due to the strong buffering capacity of the soil. The Zn extracted by EDTA, HOAc and NH4OAc showed close relationships with each other (p < 0.001). Zinc extracted by 0.05 M EDTA and NH4OAc were highly correlated with soil basal respiration and specific respiration rate (p < 0.01). The results suggest that NH4OAc-extractable Zn combined with soil specific respiration could be used as parameters for risk assessment. (C) 2002 Elsevier Science Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | RESPONSE MODEL APPROACH ; HEAVY-METALS ; SHORT-TERM ; CONTAMINATED SOILS ; AGRICULTURAL SOILS ; DECOMPOSITION ; GLUCOSE ; COPPER ; TOXICITY ; CARBON |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000180082200028 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559225 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Luo, YM |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Queens Univ Belfast, Agr Environm Sci Dept, Belfast BT9 5PX, Antrim, North Ireland |
| 推荐引用方式 GB/T 7714 | Jiang, XJ,Luo, YM,Liu, SL,et al. Changes in soil microbial biomass and Zn extractability over time following Zn addition to a paddy soil[J]. CHEMOSPHERE,2003,50(6):855-861. |
| APA | Jiang, XJ.,Luo, YM.,Liu, SL.,Ding, KQ.,Wu, SC.,...&Christie, P.(2003).Changes in soil microbial biomass and Zn extractability over time following Zn addition to a paddy soil.CHEMOSPHERE,50(6),855-861. |
| MLA | Jiang, XJ,et al."Changes in soil microbial biomass and Zn extractability over time following Zn addition to a paddy soil".CHEMOSPHERE 50.6(2003):855-861. |
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来源：南京土壤研究所
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