The impact of drought on total ozone flux in a mountain Norway spruce forest

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F20%3A00532003" target="_blank" >RIV/86652079:_____/20:00532003 - isvavai.cz</a>
Result on the web
<a href="https://www.agriculturejournals.cz/web/jfs.htm?type=article&id=129_2019-JFS" target="_blank" >https://www.agriculturejournals.cz/web/jfs.htm?type=article&id=129_2019-JFS</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17221/129/2019-JFS" target="_blank" >10.17221/129/2019-JFS</a>

Result language
angličtina
Original language name
The impact of drought on total ozone flux in a mountain Norway spruce forest
Original language description
In order to understand the impact of summer drought on dry deposition of tropospheric ozone (O-3), we compared severe and mild drought periods of summer 2018 in a mountain Norway spruce forest at Bily Kriz, Beskydy Mts. An eddy covariance technique was applied to measure diurnal courses of the ecosystem O-3 and CO2 fluxes. Low O-3 deposition was recorded in the morning and evening, while the highest CO2 and O-3 fluxes were recorded during the central hours of the day. Total O-3 deposition during severe drought (soil humidity 13%) was significantly higher than the deposition during the mild drought period (soil humidity 19%). Our data indicate that high vapour pressure deficit and low soil humidity during severe drought led to the stomatal closure, while non-stomatal O-3 deposition, associated with chemical reactions of O-3 with NO and volatile organic compounds, are responsible for higher total O-3 deposition during the severe drought period. Therefore, we assume that under severe drought stomatal O-3 uptake decreases but non-stomatal depositions to forest ecosystems substantially increase.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40102 - Forestry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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