Transpiration, evapotranspiration and energy fluxes in a temperate wetland dominated by Phalaris arundinacea under hot summer conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25173154%3A_____%2F10%3A%230000189" target="_blank" >RIV/25173154:_____/10:#0000189 - 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

Transpiration, evapotranspiration and energy fluxes in a temperate wetland dominated by Phalaris arundinacea under hot summer conditions

Popis výsledku v původním jazyce

Transpiration, evapotranspiration and evaporative fraction (EF) were measured in a temperate zone wetland dominated by Phalaris arundinacea L. under extremely high temperature and intense irradiation conditions. The infrared (IR) camera recorded no temperature extremes within the stand, indicating that the stand was capable of regulating the overheating by transpiration. The transpiration rate of individual leaves (measured by the gas-exchange method) was positively correlated with the water vapour pressure deficit of the air (R2 = 0,56, df = 1, 60, p < 0,001) reaching values of up to 7,8 mmol/m2s1 of leaf area. The EF showed that more than one half of the available energy was consumed in the evapotranspiration processes. In the afternoon, the influence of hot air advection was obvious. A strong cooling effect of the wetland was shown. The results support the idea that wetlands sufficiently supplied with water are important in the energy and water budget of drained cultural landscapes.

Název v anglickém jazyce

Transpiration, evapotranspiration and energy fluxes in a temperate wetland dominated by Phalaris arundinacea under hot summer conditions

Popis výsledku anglicky

Transpiration, evapotranspiration and evaporative fraction (EF) were measured in a temperate zone wetland dominated by Phalaris arundinacea L. under extremely high temperature and intense irradiation conditions. The infrared (IR) camera recorded no temperature extremes within the stand, indicating that the stand was capable of regulating the overheating by transpiration. The transpiration rate of individual leaves (measured by the gas-exchange method) was positively correlated with the water vapour pressure deficit of the air (R2 = 0,56, df = 1, 60, p < 0,001) reaching values of up to 7,8 mmol/m2s1 of leaf area. The EF showed that more than one half of the available energy was consumed in the evapotranspiration processes. In the afternoon, the influence of hot air advection was obvious. A strong cooling effect of the wetland was shown. The results support the idea that wetlands sufficiently supplied with water are important in the energy and water budget of drained cultural landscapes.

Druh

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

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

<a href="/cs/project/2B06023" target="_blank" >2B06023: Vývoj metody stanovení toků energie a látek ve vybraných ekosystémech, návrh a ověření principů hodnocení hospodářských zásahů pro zajištění podmínek autoregulace a rozvoje biodiverzity</a><br>

Návaznosti

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

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Ecohydrology

ISSN

1936-0592

e-ISSN

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Svazek periodika

4

Číslo periodika v rámci svazku

15 Dec

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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