Nationwide ground-level ozone measurements in China suggest serious risks to forests
文献类型：期刊论文
| 作者 | Zhou, Daojing; Li, Pin; De Marco, Alessandra; Feng, Zhaozhong; Anav, Alessandro; Paoletti, Elena |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 237页码:803-813 |
| 关键词 | Surface ozone Ozone-exposure metrics Risk assessment Forests China |
| ISSN号 | 0269-7491 |
| 文献子类 | Article |
| 英文摘要 | We processed hourly ozone (O-3) concentrations collected in 2015 and in 2016 by a network of 1497 stations across China, with the main aim of assessing the risk that present ambient O-3 exposure is posing to Chinese forests. Our results indicate that the values of the metrics AOT40 (the accumulated hourly O-3 concentrations above 40 ppb during daylight hours) recommended as European Union standard, and W126 (the sum of weighted hourly concentrations from 8:00 to 20:00) recommended as USA standard for forest protection, exceeded the critical levels (5 ppm h across 6 months for AOT40 and 7-21 ppm h over 3 months for W126) on average by 5.1 and 1.2 times, respectively. N100 showed on average 65 annual exceedances of 100 ppb as hourly value. The 12-h and 24-h averages showed a small difference, suggesting high concentrations also at night. Risk was higher for the northern temperate climate than for the southern tropical and sub-tropical climates, and overall for the northern regions than for the southern regions. Higher risk occurred in the non-urban areas than in the urban areas in northern, southwest and north-west China, whereas risk was higher at urban areas in eastern and southern China. The overall results of this first nationwide assessment suggest a significant risk for forests over the entire China and warrant for urgent measures for controlling O-3 precursor emissions and establishing standards of protection. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40617]  |
| 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 | Zhou, Daojing,Li, Pin,De Marco, Alessandra,et al. Nationwide ground-level ozone measurements in China suggest serious risks to forests[J]. ENVIRONMENTAL POLLUTION,2018,237:803-813. |
| APA | Zhou, Daojing,Li, Pin,De Marco, Alessandra,Feng, Zhaozhong,Anav, Alessandro,&Paoletti, Elena.(2018).Nationwide ground-level ozone measurements in China suggest serious risks to forests.ENVIRONMENTAL POLLUTION,237,803-813. |
| MLA | Zhou, Daojing,et al."Nationwide ground-level ozone measurements in China suggest serious risks to forests".ENVIRONMENTAL POLLUTION 237(2018):803-813. |
入库方式： OAI收割
来源：生态环境研究中心
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