Interactive effects of ozone exposure and nitrogen addition on tree root traits and biomass allocation pattern: An experimental case study and a literature meta-analysis
文献类型：期刊论文
| 作者 | Li, Pin; Yin, Rongbin; Shang, Bo; Agathokleous, Evgenios; Zhou, Huimin; Feng, Zhaozhong |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-03-25 |
| 卷号 | 710页码:1-14 |
| ISSN号 | 0048-9697 |
| 关键词 | Ozone Nitrogen addition Root biomass Root:shoot ratio Isometric allocation Optimal partitioning |
| 英文摘要 | Ground-level ozone (O-3) pollution often co-occurs with anthropogenic nitrogen (N) deposition. Many studies have explored how O-3 and soil N affect aboveground structure and function of trees, but it remains unclear how belowground processes change over a spectrum of N addition and O-3 concentrations levels. Here, we explored the interactive impact of O-3 (five levels) and soil N (four levels) on fine and coarse root biomass and biomass allocation pattern in poplar clone 107 (Populus euramericana cv. '74/76'). We then evaluated the modifying effects of N on the responses of tree root biomass to O-3 via a synthesis of published literature. Elevated O-3 inhibited while N addition stimulated root biomass, with more pronounced effects on fine roots than on coarse root. The root:shoot (R:S) ratio was markedly decreased by N addition but remained unaffected by O-3. No interactive effects between O-3 and N were observed on root biomass and R:S ratio. The slope of log-log linear relationship between shoot and root biomass (i.e. scaling exponent) was increased by N, but not significantly affected by O-3. The analysis of published literature further revealed that the O-3-induced reduction in tree root biomass was not modified by soil N. The results suggest that higher N addition levels enhance faster allocation of shoot biomass while shoot biomass scales isometrically with root biomass across multiple O-3 levels. N addition does not markedly alter the sensitivity of root biomass of trees to O-3. These findings highlight that the biomass allocation exhibits a differential response to environmentally realistic levels of O-3 and N, and provide an important perspective for understanding and predicting net primary productivity and carbon dynamics in O-3-polluted and Nenriched environments. (C) 2020 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44355]  |
| 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, Pin,Yin, Rongbin,Shang, Bo,et al. Interactive effects of ozone exposure and nitrogen addition on tree root traits and biomass allocation pattern: An experimental case study and a literature meta-analysis[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,710:1-14. |
| APA | Li, Pin,Yin, Rongbin,Shang, Bo,Agathokleous, Evgenios,Zhou, Huimin,&Feng, Zhaozhong.(2020).Interactive effects of ozone exposure and nitrogen addition on tree root traits and biomass allocation pattern: An experimental case study and a literature meta-analysis.SCIENCE OF THE TOTAL ENVIRONMENT,710,1-14. |
| MLA | Li, Pin,et al."Interactive effects of ozone exposure and nitrogen addition on tree root traits and biomass allocation pattern: An experimental case study and a literature meta-analysis".SCIENCE OF THE TOTAL ENVIRONMENT 710(2020):1-14. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。