Quantitative assessment on soil enzyme activities of heavy metal contaminated soils with various soil properties
文献类型：期刊论文
| 作者 | Xian, Yu; Wang, Meie; Chen, Weiping |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2015-11 |
| 卷号 | 139页码:604-608 |
| 关键词 | Soil heavy metal toxicity Soil enzyme activity Soil properties Quantitative model Ecological risk assessment |
| 英文摘要 | Soil enzyme activities are greatly influenced by soil properties and could be significant indicators of heavy metal toxicity in soil for bioavailability assessment. Two groups of experiments were conducted to determine the joint effects of heavy metals and soil properties on soil enzyme activities. Results showed that arylsulfatase was the most sensitive soil enzyme and could be used as an indicator to study the enzymatic toxicity of heavy metals under various soil properties. Soil organic matter (SOM) was the dominant factor affecting the activity of arylsulfatase in soil. A quantitative model was derived to predict the changes of arylsulfatase activity with SOM content. When the soil organic matter content was less than the critical point A (1.05% in our study), the arylsulfatase activity dropped rapidly. When the soil organic matter content was greater than the critical point A, the arylsulfatase activity gradually rose to higher levels showing that instead of harm the soil microbial activities were enhanced. The SOM content needs to be over the critical point B (2.42% in our study) to protect its microbial community from harm due to the severe Pb pollution (500 mg kg(-1) in our study). The quantitative model revealed the pattern variation of enzymatic toxicity due to heavy metals under various SOM contents. The applicability of the model under wider soil properties need to be tested. The model however may provide a methodological basis for ecological risk assessment of heavy metals in soil. (C) 2014 Elsevier Ltd. All rights reserved. |
| 研究领域[WOS] | Environmental Sciences |
| WOS记录号 | WOS:000361868000078 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32361]  |
| 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 | Xian, Yu,Wang, Meie,Chen, Weiping. Quantitative assessment on soil enzyme activities of heavy metal contaminated soils with various soil properties[J]. CHEMOSPHERE,2015,139:604-608. |
| APA | Xian, Yu,Wang, Meie,&Chen, Weiping.(2015).Quantitative assessment on soil enzyme activities of heavy metal contaminated soils with various soil properties.CHEMOSPHERE,139,604-608. |
| MLA | Xian, Yu,et al."Quantitative assessment on soil enzyme activities of heavy metal contaminated soils with various soil properties".CHEMOSPHERE 139(2015):604-608. |
入库方式： OAI收割
来源：生态环境研究中心
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