High nitrogen addition decreases the ozone flux by reducing the maximum stomatal conductance in poplar saplings
文献类型：期刊论文
| 作者 | Shang, Bo; Xu, Yansen ; Peng, Jinlong; Agathokleous, Evgenios; Feng, Zhaozhong
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| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 272页码:- |
| 关键词 | Biomass Critical levels Dose-response relationship Nitrogen addition Ozone Poplar |
| ISSN号 | 0269-7491 |
| 英文摘要 | Ground-level ozone (O-3) and nitrogen (N) deposition are major environmental pollutants, often occurring concurrently. Ozone exposure- and flux-response relationships for tree biomass are used for regional O-3 risk assessment. In order to investigate whether soil N addition affects stomatal O-3 uptake of poplar, poplar saplings were exposed to treatment combinations of five O-3 levels and four N addition levels. High N addition treatment reduced the accumulated stomatal O-3 uptake in the leaf due to reduced maximum stomatal conductance (g(s)). Nitrogen addition also significantly reduced the steady-state light-saturated gs in August and September. Elevated O-3 significantly reduced and N addition increased total plant biomass; however, there were no significant O-3 x N interactions. The slopes of biomass-based O-3 exposure- and flux-response relationships did not differ significantly among N treatments. The critical levels for a 5% biomass reduction were estimated at 15.4 ppm h and 17.1 mmol O-3 m(-2) projected leaf area (PLA) for Accumulated O-3 exposure Over an hourly Threshold of 40 ppb (AOT40) and Phytotoxic Ozone Dose above a threshold 1 nmol O-3 m(-2) PLA s(-1) (POD1). These results can facilitate the evaluations of O-3 effect on the carbon-sink capacity and productivity of forest. (C) 2020 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45479]  |
| 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.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Inst Ecol, Key Lab Agrometeorol Jiangsu Prov, Nanjing 210044, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Shuangqing Rd 18, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shang, Bo,Xu, Yansen,Peng, Jinlong,et al. High nitrogen addition decreases the ozone flux by reducing the maximum stomatal conductance in poplar saplings[J]. ENVIRONMENTAL POLLUTION,2021,272:-. |
| APA | Shang, Bo,Xu, Yansen,Peng, Jinlong,Agathokleous, Evgenios,&Feng, Zhaozhong.(2021).High nitrogen addition decreases the ozone flux by reducing the maximum stomatal conductance in poplar saplings.ENVIRONMENTAL POLLUTION,272,-. |
| MLA | Shang, Bo,et al."High nitrogen addition decreases the ozone flux by reducing the maximum stomatal conductance in poplar saplings".ENVIRONMENTAL POLLUTION 272(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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