Copper pollution decreases the resistance of soil microbial community to subsequent dry-rewetting disturbance
文献类型：期刊论文
| 作者 | Li, Jing; Wang, Jun-Tao; Hu, Hang-Wei; Ma, Yi-Bing; Zhang, Li-Mei; He, Ji-Zheng |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2016-01 |
| 卷号 | 39页码:155-164 |
| 关键词 | Copper stress Dry-rewetting disturbance Bacterial community Substrate induced respiration Resistance |
| 英文摘要 | Dry-rewetting (DW) disturbance frequently occurs in soils due to rainfall and irrigation, and the frequency of DW cycles might exert significant influences on soil microbial communities and their mediated functions. However, how microorganisms respond to DW alternations in soils with a history of heavy metal pollution remains largely unknown. Here, soil laboratory microcosms were constructed to explore the impacts of ten DW cycles on the soil microbial communities in two contrasting soils (fluvo-aquic soil and red soil) under three copper concentrations (zero, medium and high). Results showed that the fluctuations of substrate induced respiration (SIR) decreased with repeated cycles of DW alternation. Furthermore, the resistance values of substrate induced respiration (RS-SIR) were highest in non-copper-stressed (zero) soils. Structural equation model (SEM) analysis ascertained that the shifts of bacterial communities determined the changes of RS-SIR in both soils. The rate of bacterial community variance was significantly lower in noncopper- stressed soil compared to the other two copper-stressed (medium and high) soils, which might lead to the higher RS-SIR in the fluvo-aquic soil. As for the red soil, the substantial increase of the dominant group WPS-2 after DW disturbance might result in the low RS-SIR in the high copper-stressed soil. Moreover, in both soils, the bacterial diversity was highest in non-copper-stressed soils. Our results revealed that initial copper stress could decrease the resistance of soil microbial community structure and function to subsequent DW disturbance. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/35543]  |
| 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 | Li, Jing,Wang, Jun-Tao,Hu, Hang-Wei,et al. Copper pollution decreases the resistance of soil microbial community to subsequent dry-rewetting disturbance[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2016,39:155-164. |
| APA | Li, Jing,Wang, Jun-Tao,Hu, Hang-Wei,Ma, Yi-Bing,Zhang, Li-Mei,&He, Ji-Zheng.(2016).Copper pollution decreases the resistance of soil microbial community to subsequent dry-rewetting disturbance.JOURNAL OF ENVIRONMENTAL SCIENCES,39,155-164. |
| MLA | Li, Jing,et al."Copper pollution decreases the resistance of soil microbial community to subsequent dry-rewetting disturbance".JOURNAL OF ENVIRONMENTAL SCIENCES 39(2016):155-164. |
入库方式： OAI收割
来源：生态环境研究中心
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