Elevated ozone effects on soil nitrogen cycling differ among wheat cultivars
文献类型：期刊论文
| 作者 | Dijkstra, Feike A.4; Wu, Honghui1,2; Li, Qi1; Lu, Caiyan1; Zhang, Lili1; Zhu, Jianguo3; Yu, Qiang1,2 |
| 刊名 | APPLIED SOIL ECOLOGY
 |
| 出版日期 | 2016-12-01 |
| 卷号 | 108页码:187-194 |
| 关键词 | Nitrogen Turnover n Mineralization Gross n Mineralization O-3 Soil Microbial Community Plfa |
| ISSN号 | 0929-1393 |
| DOI | 10.1016/j.apsoil.2016.08.015 |
| 英文摘要 | Elevated O-3 (eO(3)) has strong effects on natural and managed ecosystems, including decreased plant growth, plant tissue quality, species richness, plant litter inputs, decomposition, and root turnover. However, the effects of eO(3) on soil nitrogen (N) cycling are poorly understood. Here, a free -air O-3 enrichment experiment was conducted from 2007 to 2012, in which two O-3-tolerant wheat cultivars and two O-3-sensitive cultivars were grown under ambient O-3 (aO(3), 40 ppb) and eO(3) (60 ppb). We used a N-15 pool dilution technique to investigate N transformation rates and N availability in the soils in 2012. Both gross and net N transformation rates were significantly decreased (P < 0.05) by eO(3) in soils growing sensitive wheat cultivars, but were unchanged in soils growing tolerant cultivars. Compared with aO(3), NH4+ and NO3- concentrations were significantly increased (P < 0.05) by eO(3) in soils growing sensitive cultivars but not in soils growing tolerant cultivars. Ammonia monooxygenase activity was significantly increased by eO(3) while nitrate reductase activity was significantly decreased. Additionally, redundancy analysis (RDA) suggested that microbial community structure was largely shaped by soil and plant characteristics such as DOC, root C/N ratio, MBC/MBN, shoot/root ratio, root N, soil N and pH. In conclusion, wheat cultivars play an important role in determining the effects of elevated O-3 on N transformations. This study provides new insights into our understanding of how changes in microbial diversity and metabolism as mediated by plants will alter N cycling and ecosystem N availability in response to eO(3) and suggests that these effects will differ among different plants. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000386643800021 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://210.72.129.5/handle/321005/122870]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Wu, Honghui |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Key Lab Crop Nutr & Fertilizat, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 4.Univ Sydney, Sch Life & Environm Sci, Ctr Carbon Water & Food, Camden, NSW 2570, Australia |
| 推荐引用方式 GB/T 7714 | Dijkstra, Feike A.,Wu, Honghui,Li, Qi,et al. Elevated ozone effects on soil nitrogen cycling differ among wheat cultivars[J]. APPLIED SOIL ECOLOGY,2016,108:187-194. |
| APA | Dijkstra, Feike A..,Wu, Honghui.,Li, Qi.,Lu, Caiyan.,Zhang, Lili.,...&Yu, Qiang.(2016).Elevated ozone effects on soil nitrogen cycling differ among wheat cultivars.APPLIED SOIL ECOLOGY,108,187-194. |
| MLA | Dijkstra, Feike A.,et al."Elevated ozone effects on soil nitrogen cycling differ among wheat cultivars".APPLIED SOIL ECOLOGY 108(2016):187-194. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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