Ambient ozone phytotoxic potential over the Czech forests as assessed by AOT40
iForest - Biogeosciences and Forestry, Volume 5, Issue 3, Pages 153-162 (2012)
doi: https://doi.org/10.3832/ifor0617-005
Published: Jun 25, 2012 - Copyright © 2012 SISEF
Research Articles
Abstract
Ambient ozone (O3) represents one of the most prominent air pollution problems in Europe. We present an analysis on O3 with respect to its phytotoxic potential over Czech forests between 1994 and 2008. The phytotoxic potential is estimated based on the exposure index AOT40 for forests calculated from real-time monitoring data at 24 rural sites. Our results indicate high phytotoxic potential for most of the Czech Republic (CR) with considerable inter-annual and spatial variability. The highest AOT40 values were 38-39 ppm·h. The critical level for forest protection (5 ppm·h) was usually exceeded early in the growing season, generally in May. In years with meteorological conditions conducive to ozone formation, the critical level was exceeded by 5-7 folds as compared to years with non-conducive conditions; nevertheless, all sites consistently exceeded the critical level since 1994. In the extremely hot and dry year 2003, the critical level for forests was exceeded over 31 % of the Czech forested area. More research is needed to translate these exceedances into forest injury in the CR.
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Authors’ Info
Authors’ address
M Schreiberová
Czech Hydrometeorological Institute, Na Šabatce 17, 143 06 Prague 4 - Komorany (Czech Republic)
Corresponding author
Paper Info
Citation
Hunová I, Schreiberová M (2012). Ambient ozone phytotoxic potential over the Czech forests as assessed by AOT40. iForest 5: 153-162. - doi: 10.3832/ifor0617-005
Academic Editor
Elena Paoletti
Paper history
Received: Nov 29, 2011
Accepted: May 11, 2012
First online: Jun 25, 2012
Publication Date: Jun 29, 2012
Publication Time: 1.50 months
Copyright Information
© SISEF - The Italian Society of Silviculture and Forest Ecology 2012
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This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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