Identifying thresholds of nitrogen enrichment for substantial shifts in arbuscular mycorrhizal fungal community metrics in a temperate grassland of northern China
文献类型：期刊论文
| 作者 | Wu, Hui ; Yang, Junjie; Fu, Wei; Rillig, Matthias C.; Cao, Zhenjiao; Zhao, Aihua; Hao, Zhipeng; Zhang, Xin; Chen, Baodong; Han, Xingguo
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| 刊名 | NEW PHYTOLOGIST
 |
| 出版日期 | 2023 |
| 卷号 | 237期号:1页码:1-16 |
| ISSN号 | 0028-646X |
| 关键词 | arbuscular mycorrhizal fungi biodiversity community response global change nitrogen deposition stability threshold |
| 英文摘要 | Nitrogen (N) enrichment poses threats to biodiversity and ecosystem stability, while arbuscular mycorrhizal (AM) fungi play important roles in ecosystem stability and functioning. However, the ecological impacts, especially thresholds of N enrichment potentially causing AM fungal community shifts have not been adequately characterized. Based on a long-term field experiment with nine N addition levels ranging from 0 to 50 g N m(-2) yr(-1) in a temperate grassland, we characterized the community response patterns of AM fungi to N enrichment. Arbuscular mycorrhizal fungal biomass continuously decreased with increasing N addition levels. However, AM fungal diversity did not significantly change below 20 g N m(-2) yr(-1), but dramatically decreased at higher N levels, which drove the AM fungal community to a potentially unstable state. Structural equation modeling showed that the decline in AM fungal biomass could be well explained by soil acidification, whereas key driving factors for AM fungal diversity shifted from soil nitrogen : phosphorus (N : P) ratio to soil pH with increasing N levels. Different aspects of AM fungal communities (biomass, diversity and community composition) respond differently to increasing N addition levels. Thresholds for substantial community shifts in response to N enrichment in this grassland ecosystem are identified. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48409]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Free University of Berlin 2.Institute of Botany, CAS 3.University of Chinese Academy of Sciences, CAS 4.Research Center for Eco-Environmental Sciences (RCEES) 5.Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | Wu, Hui,Yang, Junjie,Fu, Wei,et al. Identifying thresholds of nitrogen enrichment for substantial shifts in arbuscular mycorrhizal fungal community metrics in a temperate grassland of northern China[J]. NEW PHYTOLOGIST,2023,237(1):1-16. |
| APA | Wu, Hui.,Yang, Junjie.,Fu, Wei.,Rillig, Matthias C..,Cao, Zhenjiao.,...&Han, Xingguo.(2023).Identifying thresholds of nitrogen enrichment for substantial shifts in arbuscular mycorrhizal fungal community metrics in a temperate grassland of northern China.NEW PHYTOLOGIST,237(1),1-16. |
| MLA | Wu, Hui,et al."Identifying thresholds of nitrogen enrichment for substantial shifts in arbuscular mycorrhizal fungal community metrics in a temperate grassland of northern China".NEW PHYTOLOGIST 237.1(2023):1-16. |
入库方式： OAI收割
来源：生态环境研究中心
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