Synthetic Fertilizer Increases Denitrifier Abundance and Depletes Subsoil Total N in a Long-Term Fertilization Experiment
文献类型：期刊论文
| 作者 | Wang, Ying1,2; Ji, Hongfei1,2; Wang, Rui2 ; Hu, Yaxian1,2; Guo, Shengli1,2
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| 刊名 | FRONTIERS IN MICROBIOLOGY
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| 出版日期 | 2020-08-31 |
| 卷号 | 11页码:11 |
| 关键词 | denitrifier nitrifier gene abundance subsoil Chinese Loess Plateau |
| ISSN号 | 1664-302X |
| DOI | 10.3389/fmicb.2020.02026 |
| 通讯作者 | Wang, Ying(yingwang@nwsuaf.edu.cn) |
| 英文摘要 | Chronic synthetic nitrogen (N) application can result in a significant accumulation of nitrate in the subsoil, which could alter subsoil N cycle and subsequently affect subsoil N levels. To understand how elemental interactions affect the cycle and storage of subsoil N, we examined the soils receiving no fertilizer control (CK), 30-year applications of synthetic fertilizer (CF), and CF plus organic manure (CF + OM). The N cycling microbial groups and activity were investigated through analyzing abundance of bacteria, nitrifiers and denitrifiers, potential nitrification (PNA) and denitrification (DEA) rates in the topsoil (0-20 cm) and subsoil depths (20-80 cm). Compared with the CK, the CF application increased subsoil nitrate but reduced or did not change subsoil microbial biomass N and total N. Corresponding to the increased nitrate, the abundances of denitrifiers increased in the CF subsoils. By contrast, the abundances of nitrifiers increased in the CF topsoil. Significant correlation between the abundances of nitrifiers and soil PNA was found in the topsoil, while significant correlation was also found in the subsoil between the abundances ofnirS- and/ornirK-type denitrifiers and DEA. These results suggest that the depleted or less changed subsoil total N by CF application might be partly related to the enriched denitrifiers groups and the related potential activity. The contrasting responses of nitrifiers and denitrifiers in the CF subsoil indicate a decoupling of both processes. Our findings highlight that the leached nitrate by synthetic fertilizer addition not only occurs as an environmental risk causing groundwater contamination but may also alter the subsoil N cycle through the denitrifier groups. |
| WOS关键词 | AMMONIA-OXIDIZING BACTERIA ; NITROGEN ADDITION ; SOIL-PROFILE ; MICROBIAL COMMUNITIES ; VERTICAL-DISTRIBUTION ; NITRATE ACCUMULATION ; ORGANIC FERTILIZERS ; DEEP-SOIL ; CARBON ; IMPACT |
| 资助项目 | National Key Research and Development Program of China[2016YFD0200308] ; National Key Research and Development Program of China[2016YFD0800105] ; CAS 'Light of West China' Program for Introduced Talent in the West, National Natural Science Foundation of China[41301322] ; Chinese Universities Scientific Fund[2014YB055] |
| WOS研究方向 | Microbiology |
| 语种 | 英语 |
| WOS记录号 | WOS:000570592600001 |
| 出版者 | FRONTIERS MEDIA SA |
| 资助机构 | National Key Research and Development Program of China ; CAS 'Light of West China' Program for Introduced Talent in the West, National Natural Science Foundation of China ; Chinese Universities Scientific Fund |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/156977]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Ying |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 2.Northwest A&F Univ, Key Lab Soil Eros & Dryland Farming Loess Plateau, Yangling, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Ying,Ji, Hongfei,Wang, Rui,et al. Synthetic Fertilizer Increases Denitrifier Abundance and Depletes Subsoil Total N in a Long-Term Fertilization Experiment[J]. FRONTIERS IN MICROBIOLOGY,2020,11:11. |
| APA | Wang, Ying,Ji, Hongfei,Wang, Rui,Hu, Yaxian,&Guo, Shengli.(2020).Synthetic Fertilizer Increases Denitrifier Abundance and Depletes Subsoil Total N in a Long-Term Fertilization Experiment.FRONTIERS IN MICROBIOLOGY,11,11. |
| MLA | Wang, Ying,et al."Synthetic Fertilizer Increases Denitrifier Abundance and Depletes Subsoil Total N in a Long-Term Fertilization Experiment".FRONTIERS IN MICROBIOLOGY 11(2020):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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