Influence of summer flood on the net ecosystem exchange of CO2 in a temperate sedge-grass marsh

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F09%3A00342873" target="_blank" >RIV/67179843:_____/09:00342873 - 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

Influence of summer flood on the net ecosystem exchange of CO2 in a temperate sedge-grass marsh

Popis výsledku v původním jazyce

Characteristics of CO2?C exchange were studied in a temperate herbaceous wetland in 2006 and 2007, years with contrasting hydrological regimes. Net ecosystem production (NEP) was calculated from the CO2 fluxes measured by the eddy-covariance technique and was compared with the seasonal course of plant live aboveground biomass. The results show that: (1) the annual net uptake of CO2?C was 199 and 220 g C m1 yr1 in 2006 and 2007, respectively. The daily net CO2?C uptake reached 12?20 g C m2 day1 in sunnysummer days. (2) Although the observed wetland is adapted to floods, the summer flood substantially reduced its net CO2?C uptake. The daily courses of net CO2?C uptake point to reduced rates of CO2?C fixation by the vegetation cover. (3) A recovery growth of plant biomass was associated with a second peak of NEP in September 2006. (4) Lack of knowledge on the dynamics of methane emissions presently limits deeper understanding of the effect of floods on carbon balance in wetlands.

Název v anglickém jazyce

Influence of summer flood on the net ecosystem exchange of CO2 in a temperate sedge-grass marsh

Popis výsledku anglicky

Characteristics of CO2?C exchange were studied in a temperate herbaceous wetland in 2006 and 2007, years with contrasting hydrological regimes. Net ecosystem production (NEP) was calculated from the CO2 fluxes measured by the eddy-covariance technique and was compared with the seasonal course of plant live aboveground biomass. The results show that: (1) the annual net uptake of CO2?C was 199 and 220 g C m1 yr1 in 2006 and 2007, respectively. The daily net CO2?C uptake reached 12?20 g C m2 day1 in sunnysummer days. (2) Although the observed wetland is adapted to floods, the summer flood substantially reduced its net CO2?C uptake. The daily courses of net CO2?C uptake point to reduced rates of CO2?C fixation by the vegetation cover. (3) A recovery growth of plant biomass was associated with a second peak of NEP in September 2006. (4) Lack of knowledge on the dynamics of methane emissions presently limits deeper understanding of the effect of floods on carbon balance in wetlands.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

ED - Fyziologie

OECD FORD obor

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Projekt

<a href="/cs/project/SP%2F2D1%2F93%2F07" target="_blank" >SP/2D1/93/07: Czech Terra - adaptace uhlíkových deponií v krajině v kontextu globální změny</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Agricultural and Forest Meteorology

ISSN

0168-1923

e-ISSN

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Svazek periodika

149

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

000267626300013

EID výsledku v databázi Scopus

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