Nationwide ground-level ozone measurements in China suggest serious risks to forests

doi:10.1016/j.envpol.2017.11.002

	Nationwide ground-level ozone measurements in China suggest serious risks to forests
	Li, Pin 1,2; De Marco, Alessandra 3,4; Feng, Zhaozhong 1,2; Anav, Alessandro 3,4; Zhou, Daojing 5; Paoletti, Elena 1,4
刊名	ENVIRONMENTAL POLLUTION
	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
DOI	10.1016/j.envpol.2017.11.002
通讯作者	Feng, Zhaozhong(fzz@rcees.ac.cn)
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.
资助项目	Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-DQC019] ; Hundred Talents Program, Chinese Academy of Sciences ; Chinese Academy of Sciences President's International Fellowship Initiative (PIFI) for Senior Scientists[2016VBA057] ; National Natural Science Foundation of China[31500396] ; CNR-CAS
WOS关键词	SURFACE OZONE ; TROPOSPHERIC OZONE ; CLIMATE-CHANGE ; RESPONSE RELATIONSHIPS ; EUROPEAN FORESTS ; LEAF MORPHOLOGY ; ELEVATED OZONE ; EASTERN CHINA ; UNITED-STATES ; POPLAR CLONES
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000431158900082
资助机构	Key Research Program of Frontier Sciences, CAS ; Hundred Talents Program, Chinese Academy of Sciences ; Chinese Academy of Sciences President's International Fellowship Initiative (PIFI) for Senior Scientists ; National Natural Science Foundation of China ; CNR-CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/54984]
专题	中国科学院地理科学与资源研究所
通讯作者	Feng, Zhaozhong
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Shuangqing Rd 18, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.ENEA Casaccia, Via Anguillarese 31, Rome, Italy 4.CNR, Via Madonna Piano 10, I-50019 Sesto Fiorentino, Italy 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Li, Pin,De Marco, Alessandra,Feng, Zhaozhong,et al. Nationwide ground-level ozone measurements in China suggest serious risks to forests[J]. ENVIRONMENTAL POLLUTION,2018,237:803-813.
APA	Li, Pin,De Marco, Alessandra,Feng, Zhaozhong,Anav, Alessandro,Zhou, Daojing,&Paoletti, Elena.(2018).Nationwide ground-level ozone measurements in China suggest serious risks to forests.ENVIRONMENTAL POLLUTION,237,803-813.
MLA	Li, Pin,et al."Nationwide ground-level ozone measurements in China suggest serious risks to forests".ENVIRONMENTAL POLLUTION 237(2018):803-813.