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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40102 - Forestry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Forest Science

ISSN

1212-4834

e-ISSN

—

Svazek periodika

66

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

280-287

Kód UT WoS článku

000553581700002

EID výsledku v databázi Scopus

2-s2.0-85091194857