Ozone flux and ozone deposition in a mountain spruce forest are modulated by sky conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F19%3A00503923" target="_blank" >RIV/86652079:_____/19:00503923 - isvavai.cz</a>

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S0048969719315074?token=E81FF4357345D487E3A4F1B68F9C33BEC7AF9B5C5F3D64BEC3D0C873ED8C41BBA777003F9598376D88AB376E6AAB526B" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0048969719315074?token=E81FF4357345D487E3A4F1B68F9C33BEC7AF9B5C5F3D64BEC3D0C873ED8C41BBA777003F9598376D88AB376E6AAB526B</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2019.03.491" target="_blank" >10.1016/j.scitotenv.2019.03.491</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ozone flux and ozone deposition in a mountain spruce forest are modulated by sky conditions

Popis výsledku v původním jazyce

In order to understand the main driving factors of ozone (O3) deposition we tested the hypothesis that sky conditions (cloudy, partly cloudy, and clear sky) modulate O3 flux in forest ecosystems via stomatal regulation. The hypothesis is based on the fact that complex microclimate conditions under cloudy sky usually stimulate stomatal conductance.nO3 fluxes were inferred from a concentration gradient in a mountainous Norway spruce forest in the Czech Republic (Central Europe) for years 2012–2016 and measured directly by eddy-covariance during the summer of 2017. Daily and seasonal O3 depositions were calculated separately for days with cloudy, partly cloudy, and clear sky conditions.nThe data show unequivocally that more O3 is taken up under cloudy and partially cloudy skies. Moreover, we found significant interactive effects of sky conditions and season on O3 flux. Though there are other mechanisms and pathways involved in the transport of O3 to the plant-soil system, the highest O3 deposition was associated to the highest stomatal conductance during partly cloudy and cloudy sky conditions in all seasons, while lower O3 ecosystem fluxes were observed under clear sky conditions despite the highest O3 concentrations at this time. These findings suggest that forests growing at sites where conditions are predominantly cloudy are expected to deposit higher extent of O3 than less-cloudy forests being thus more threatened by phytotoxic O3.

Název v anglickém jazyce

Ozone flux and ozone deposition in a mountain spruce forest are modulated by sky conditions

Popis výsledku anglicky

In order to understand the main driving factors of ozone (O3) deposition we tested the hypothesis that sky conditions (cloudy, partly cloudy, and clear sky) modulate O3 flux in forest ecosystems via stomatal regulation. The hypothesis is based on the fact that complex microclimate conditions under cloudy sky usually stimulate stomatal conductance.nO3 fluxes were inferred from a concentration gradient in a mountainous Norway spruce forest in the Czech Republic (Central Europe) for years 2012–2016 and measured directly by eddy-covariance during the summer of 2017. Daily and seasonal O3 depositions were calculated separately for days with cloudy, partly cloudy, and clear sky conditions.nThe data show unequivocally that more O3 is taken up under cloudy and partially cloudy skies. Moreover, we found significant interactive effects of sky conditions and season on O3 flux. Though there are other mechanisms and pathways involved in the transport of O3 to the plant-soil system, the highest O3 deposition was associated to the highest stomatal conductance during partly cloudy and cloudy sky conditions in all seasons, while lower O3 ecosystem fluxes were observed under clear sky conditions despite the highest O3 concentrations at this time. These findings suggest that forests growing at sites where conditions are predominantly cloudy are expected to deposit higher extent of O3 than less-cloudy forests being thus more threatened by phytotoxic O3.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Science of the Total Environment

ISSN

0048-9697

e-ISSN

—

Svazek periodika

672

Číslo periodika v rámci svazku

jul

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

296-304

Kód UT WoS článku

000466979400030

EID výsledku v databázi Scopus

2-s2.0-85063760883