The Influence of Ozone on Net Ecosystem Production of a Ryegrass-Clover Mixture under Field Conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F21%3A00551776" target="_blank" >RIV/86652079:_____/21:00551776 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/62156489:43210/21:43920929 RIV/62156489:43410/21:43920929 RIV/00216224:14310/21:00123867

Výsledek na webu

<a href="https://www.mdpi.com/2073-4433/12/12/1629" target="_blank" >https://www.mdpi.com/2073-4433/12/12/1629</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/atmos12121629" target="_blank" >10.3390/atmos12121629</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Influence of Ozone on Net Ecosystem Production of a Ryegrass-Clover Mixture under Field Conditions

Popis výsledku v původním jazyce

In order to understand the effect of phytotoxic tropospheric ozone (O-3) on terrestrial vegetation, we quantified the impact of current O-3 concentration ([O-3]) on net ecosystem production (NEP) when compared to the conditions of the pre-industrial era. We compared and tested linear mixed-effects models based on [O-3] and stomatal O-3 flux (F-sto). The managed ryegrass-clover (Lolium perenne and Trifolium pratense) mixture was grown on arable land in the Czech Republic, Central Europe. Values of [O-3] and F-sto were measured and calculated based on resistance analogy, respectively, while NEP was calculated from eddy covariance CO2 fluxes. We found the F-sto-based model more precise when compared to measured NEP. High F-sto was found even at low [O-3], while broad summer maximum of [O-3] was not necessarily followed by significant NEP decline, due to low soil water content leading to a low stomatal conductivity and F-sto. Comparing to low pre-industrial O-3 conditions, current levels of O-3 resulted in the reduction of cumulative NEP over the entire growing season, up to 29.7 and 13.5% when the [O-3]-based and F-sto-based model was applied, respectively. During the growing season, an O-3-induced reduction of NEP ranged between 13.1% in May and 26.2% in July when compared to pre-industrial F-sto levels. Looking to the future, high [O-3] and F-sto may lead to the reduction of current NEP by approximately 13.3% on average during the growing season, but may increase by up to 61-86.6% in autumn, indicating further O-3-induced acceleration of the senescence. These findings indicate the importance of F-sto and its inclusion into the models estimating O-3 effects on terrestrial vegetation. The interaction between environmental factors and stomatal conductance is therefore discussed in detail.

Název v anglickém jazyce

The Influence of Ozone on Net Ecosystem Production of a Ryegrass-Clover Mixture under Field Conditions

Popis výsledku anglicky

In order to understand the effect of phytotoxic tropospheric ozone (O-3) on terrestrial vegetation, we quantified the impact of current O-3 concentration ([O-3]) on net ecosystem production (NEP) when compared to the conditions of the pre-industrial era. We compared and tested linear mixed-effects models based on [O-3] and stomatal O-3 flux (F-sto). The managed ryegrass-clover (Lolium perenne and Trifolium pratense) mixture was grown on arable land in the Czech Republic, Central Europe. Values of [O-3] and F-sto were measured and calculated based on resistance analogy, respectively, while NEP was calculated from eddy covariance CO2 fluxes. We found the F-sto-based model more precise when compared to measured NEP. High F-sto was found even at low [O-3], while broad summer maximum of [O-3] was not necessarily followed by significant NEP decline, due to low soil water content leading to a low stomatal conductivity and F-sto. Comparing to low pre-industrial O-3 conditions, current levels of O-3 resulted in the reduction of cumulative NEP over the entire growing season, up to 29.7 and 13.5% when the [O-3]-based and F-sto-based model was applied, respectively. During the growing season, an O-3-induced reduction of NEP ranged between 13.1% in May and 26.2% in July when compared to pre-industrial F-sto levels. Looking to the future, high [O-3] and F-sto may lead to the reduction of current NEP by approximately 13.3% on average during the growing season, but may increase by up to 61-86.6% in autumn, indicating further O-3-induced acceleration of the senescence. These findings indicate the importance of F-sto and its inclusion into the models estimating O-3 effects on terrestrial vegetation. The interaction between environmental factors and stomatal conductance is therefore discussed in detail.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

<a href="/cs/project/EF16_019%2F0000797" target="_blank" >EF16_019/0000797: SustES - Adaptační strategie pro udržitelnost ekosystémových služeb a potravinové bezpečnosti v nepříznivých přírodních podmínkách</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Atmosphere

ISSN

2073-4433

e-ISSN

2073-4433

Svazek periodika

2021

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

1629

Kód UT WoS článku

000735789100001

EID výsledku v databázi Scopus

2-s2.0-85121683068