DOI: 10.1111/gcb.13138
论文题名: Comparing concentration-based (AOT40) and stomatal uptake (PODY) metrics for ozone risk assessment to European forests
作者: Anav A. ; De Marco A. ; Proietti C. ; Alessandri A. ; Dell'Aquila A. ; Cionni I. ; Friedlingstein P. ; Khvorostyanov D. ; Menut L. ; Paoletti E. ; Sicard P. ; Sitch S. ; Vitale M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期: 4 起始页码: 1608
结束页码: 1627
语种: 英语
英文关键词: AOT40
; Forests
; Ozone
; PODY
; Risk assessment
Scopus关键词: climate effect
; concentration (composition)
; forest ecosystem
; ozone
; phenology
; risk assessment
; stomata
; vegetation
; Europe
; air pollutant
; ozone
; air pollutant
; analysis
; Europe
; forest
; metabolism
; plant stoma
; risk assessment
; theoretical model
; tree
; Air Pollutants
; Europe
; Forests
; Models, Theoretical
; Ozone
; Plant Stomata
; Risk Assessment
; Trees
英文摘要: Tropospheric ozone (O3) produces harmful effects to forests and crops, leading to a reduction of land carbon assimilation that, consequently, influences the land sink and the crop yield production. To assess the potential negative O3 impacts to vegetation, the European Union uses the Accumulated Ozone over Threshold of 40 ppb (AOT40). This index has been chosen for its simplicity and flexibility in handling different ecosystems as well as for its linear relationships with yield or biomass loss. However, AOT40 does not give any information on the physiological O3 uptake into the leaves since it does not include any environmental constraints to O3 uptake through stomata. Therefore, an index based on stomatal O3 uptake (i.e. PODY), which describes the amount of O3 entering into the leaves, would be more appropriate. Specifically, the PODY metric considers the effects of multiple climatic factors, vegetation characteristics and local and phenological inputs rather than the only atmospheric O3 concentration. For this reason, the use of PODY in the O3 risk assessment for vegetation is becoming recommended. We compare different potential O3 risk assessments based on two methodologies (i.e. AOT40 and stomatal O3 uptake) using a framework of mesoscale models that produces hourly meteorological and O3 data at high spatial resolution (12 km) over Europe for the time period 2000-2005. Results indicate a remarkable spatial and temporal inconsistency between the two indices, suggesting that a new definition of European legislative standard is needed in the near future. Besides, our risk assessment based on AOT40 shows a good consistency compared to both in-situ data and other model-based datasets. Conversely, risk assessment based on stomatal O3 uptake shows different spatial patterns compared to other model-based datasets. This strong inconsistency can be likely related to a different vegetation cover and its associated parameterizations. © 2016 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61447
Appears in Collections: 影响、适应和脆弱性
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作者单位: College of Engineering, Mathematics and Physical Sciences, University of Exeter, Laver Building, North Park Road, Exeter, United Kingdom; Italian National Agency for New Technologies, Energy and the Environment (ENEA), C.R. Casaccia, S. Maria di Galeria, Rome, Italy; Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy; Laboratoire de Météorologie Dynamique, Ecole Polytechnique, Palaiseau Cedex, France; Institute of Sustainable Plant Protection, National Research Council, Via Madonna del Piano 10, Sesto Fiorentino, Italy; ACRI-HE, 260 route du Pin Montard, BP 234, Sophia Antipolis Cedex, France; College of Life and Environmental Sciences, University of Exeter, Amory Building, Rennes Drive, Exeter, United Kingdom
Recommended Citation:
Anav A.,De Marco A.,Proietti C.,et al. Comparing concentration-based (AOT40) and stomatal uptake (PODY) metrics for ozone risk assessment to European forests[J]. Global Change Biology,2016-01-01,22(4)