Differential sensitivity of four urban tree species to elevated O-3
文献类型：期刊论文
| 作者 | Xu, Sheng; Zhao, Yi; He, Xingyuan; Chen, Wei; Huang, Yanqing; Li, Bo |
| 刊名 | URBAN FORESTRY & URBAN GREENING
 |
| 出版日期 | 2015 |
| 卷号 | 14期号:4页码:1166-1173 |
| 关键词 | Air Pollution Elevated O-3 Open Top Chamber (Otc) Physiological Response Urban Trees Volatile Organic Compound (Voc) |
| ISSN号 | 1618-8667 |
| DOI | 10.1016/j.ufug.2015.10.015 |
| 英文摘要 | Tropospheric ozone (O-3) is regarded as one of the most wide-spread air pollutants, and it is likely to increase further in many urban areas of the world. Therefore, trees in urban areas are expected to be subjected to increasing elevated O-3 stress. In this study, four 4-year-old urban tree species (Ginkgo biloba, Quercus mongolica, Pinus tabulaeformis and Pinus armandii) in the northeast of China were sampled to investigate their physiological responses and sensitivity to elevated O-3 (80 ppb) simulated by using open top chambers (OTCs). The results showed that Q. mongolica was more sensitive to elevated O-3 than G. biloba. P. armandii was most tolerant to O-3 compared to other tree species. Among the four tree species, Q, mongolica showed a highest decrease in foliar weight, branch weight, stem weight and total above-ground biomass under elevated O-3, and decreasing by 51.0%, 48.5%, 38.2% and 44.9%, respectively. Elevated O-3 decreased net photosynthetic rate (Pn) in leaves of Q. mongolica by 63.4% (P < 0.01) after 90 days of fumigation, and 45.5% (P < 0.01) in needles of P. tabulaeformis after 30 days of fumigation. Superoxide dismutase (SOD) activity in leaves of Q. mongolica is decreased by 31.9% (P < 0.01) after 90 days of fumigation. A significant decrease of SOD activity was observed in P. tabulaeforrnis after 60 days of fumigation (P < 0.05). Compared to the ambient air control, elevated O-3 significantly increased the emission rates of volatile organic compounds (VOCs) from four tree species. VOCs emission rate increased to the highest level (327.2 mu g g(-1) h(-1)) in Q. mongolica after 60 days of O-3 fumigation. Our results provide a helpful recommendation in creating urban forest ecosystems considering ozone response and VOC emissions. (C) 2015 Elsevier GmbH. All rights reserved. |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry ; Urban Studies |
| 语种 | 英语 |
| WOS记录号 | WOS:000367639600046 |
| 出版者 | ELSEVIER GMBH, URBAN & FISCHER VERLAG |
| 源URL | [http://210.72.129.5/handle/321005/122383]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | He, Xingyuan |
| 作者单位 | Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Sheng,Zhao, Yi,He, Xingyuan,et al. Differential sensitivity of four urban tree species to elevated O-3[J]. URBAN FORESTRY & URBAN GREENING,2015,14(4):1166-1173. |
| APA | Xu, Sheng,Zhao, Yi,He, Xingyuan,Chen, Wei,Huang, Yanqing,&Li, Bo.(2015).Differential sensitivity of four urban tree species to elevated O-3.URBAN FORESTRY & URBAN GREENING,14(4),1166-1173. |
| MLA | Xu, Sheng,et al."Differential sensitivity of four urban tree species to elevated O-3".URBAN FORESTRY & URBAN GREENING 14.4(2015):1166-1173. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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