Seasonal Variation in CO2 Efflux of Stems and Branches of Norway Spruce Trees

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F08%3A00305453" target="_blank" >RIV/86652079:_____/08:00305453 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Seasonal Variation in CO2 Efflux of Stems and Branches of Norway Spruce Trees

Popis výsledku v původním jazyce

Stem and branch respiration were measured on Norway spruce (Picea abies) from May to October in four years. CO2 efflux was measured, using an IRGA and a closed gas exchange system. Measurements of ecosystem CO2 fluxes were done using the eddy covariance system. The temperature of woody tissue explained up to 68 % of their CO2 efflux. The mean annual Q10 ranged from 2•20 to 2•32 for stems and from 2•03 to 2•25 for branches. The mean annual normalized respiration rate, R10, for stems and branches ranged from 1•71 to 2•12 µmol CO2 m–2s –1 and from 0•24 to 0•31 µmol CO2 m–2 s–1, respectively. The annual contribution of stem and branch CO2 efflux to total ecosystem respiration were, respectively, 8•9 and 8•1 % in 1999, 9•2 and 9•2 % in 2000, 7•6 and 8•6 % in 2001, and 8•6 and 7•9 % in 2002. Standard deviation for both components ranged from 3 to 8 % of the mean. Stem and branch CO2 efflux varied diurnally and seasonally, and were related to temperature of the woody tissue and to growth

Název v anglickém jazyce

Seasonal Variation in CO2 Efflux of Stems and Branches of Norway Spruce Trees

Popis výsledku anglicky

Stem and branch respiration were measured on Norway spruce (Picea abies) from May to October in four years. CO2 efflux was measured, using an IRGA and a closed gas exchange system. Measurements of ecosystem CO2 fluxes were done using the eddy covariance system. The temperature of woody tissue explained up to 68 % of their CO2 efflux. The mean annual Q10 ranged from 2•20 to 2•32 for stems and from 2•03 to 2•25 for branches. The mean annual normalized respiration rate, R10, for stems and branches ranged from 1•71 to 2•12 µmol CO2 m–2s –1 and from 0•24 to 0•31 µmol CO2 m–2 s–1, respectively. The annual contribution of stem and branch CO2 efflux to total ecosystem respiration were, respectively, 8•9 and 8•1 % in 1999, 9•2 and 9•2 % in 2000, 7•6 and 8•6 % in 2001, and 8•6 and 7•9 % in 2002. Standard deviation for both components ranged from 3 to 8 % of the mean. Stem and branch CO2 efflux varied diurnally and seasonally, and were related to temperature of the woody tissue and to growth

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

40102 - Forestry

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

2008

Kód důvěrnosti údajů

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

Název periodika

Annals of Botany

ISSN

0305-7364

e-ISSN

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Svazek periodika

101

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

469-477

Kód UT WoS článku

000253582900013

EID výsledku v databázi Scopus

2-s2.0-79551669727