Fourier transform infrared spectroscopy and interference of volatile organic compounds on measurements of methane (CH4) fluxes at tree stems a general phenomenon for plant systems?

Kód výsledku v IS VaVaI

RIV/86652079:_____/21:00543382 - isvavai.cz

Výsledek na webu

https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.17311

DOI - Digital Object Identifier

10.1111/nph.17311

Jazyk výsledku

angličtina

Název v původním jazyce

Fourier transform infrared spectroscopy and interference of volatile organic compounds on measurements of methane (CH4) fluxes at tree stems a general phenomenon for plant systems?

Popis výsledku v původním jazyce

This Letter responds to the comments of Kohl et al. (2021) regarding the reliability of methane (CH4) fluxes from tropical trees on Réunion as measured by Fourier transform infrared (FTIR) spectroscopy. • We evaluated potential interference of 11 volatile organic compounds (VOCs) commonly occurring in tropical trees on CH4 concentrations in stem chambers on Réunion. The potential interference-corrected stem CH4 uptake (−15.1 ± 1.9 μg−CH4 m−2 h−1) did not differ significantly from the initially reported flux (−15.6 ± 2.0 μg−CH4 m−2 h−1). The stem CH4 flux measurements on Réunion seem to be reliable. • We further present experimental results comparing FTIR and gas chromatographic approaches for CH4 (and nitrous oxide) flux measurements in beech stems. • We revealed no substantial discrepancies in tree stem CH4 fluxes when measured by FTIR analyzer, as stated by Kohl et al. (2019). • Based upon our knowledge, the analyses performed, and inconsistencies identified in Kohl et al. (2019), we recognize that elevated VOC concentrations can interfere with CH4 concentration measurements when using FTIR technology. Under natural field conditions, however, such interference seems to be less significant than proposed by Kohl et al. (2019, 2021). Such interference is highly species-dependent and cannot be generalized for all ecosystems worldwide.

Název v anglickém jazyce

Fourier transform infrared spectroscopy and interference of volatile organic compounds on measurements of methane (CH4) fluxes at tree stems a general phenomenon for plant systems?

Popis výsledku anglicky

This Letter responds to the comments of Kohl et al. (2021) regarding the reliability of methane (CH4) fluxes from tropical trees on Réunion as measured by Fourier transform infrared (FTIR) spectroscopy. • We evaluated potential interference of 11 volatile organic compounds (VOCs) commonly occurring in tropical trees on CH4 concentrations in stem chambers on Réunion. The potential interference-corrected stem CH4 uptake (−15.1 ± 1.9 μg−CH4 m−2 h−1) did not differ significantly from the initially reported flux (−15.6 ± 2.0 μg−CH4 m−2 h−1). The stem CH4 flux measurements on Réunion seem to be reliable. • We further present experimental results comparing FTIR and gas chromatographic approaches for CH4 (and nitrous oxide) flux measurements in beech stems. • We revealed no substantial discrepancies in tree stem CH4 fluxes when measured by FTIR analyzer, as stated by Kohl et al. (2019). • Based upon our knowledge, the analyses performed, and inconsistencies identified in Kohl et al. (2019), we recognize that elevated VOC concentrations can interfere with CH4 concentration measurements when using FTIR technology. Under natural field conditions, however, such interference seems to be less significant than proposed by Kohl et al. (2019, 2021). Such interference is highly species-dependent and cannot be generalized for all ecosystems worldwide.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

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

2021

Kód důvěrnosti údajů

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

Název periodika

New Phytologist

ISSN

0028-646X

e-ISSN

1469-8137

Svazek periodika

230

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

5

Strana od-do

2100-2104

Kód UT WoS článku

000651112800004

EID výsledku v databázi Scopus

2-s2.0-85105817298