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Publikační činnost

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Typ záznamu * :	článek v odborném periodiku (J)
Domácí pracoviště * :	Katedra fyziky (31300)
Název * :	Ecophysiological controls over the net ecosystem exchange of mountain spruce stand. Comparison of the response in direct vs. diffuse solar radiation
Citace :	Urban, O., Janouš, D., Acosta, M., Czerný, R., Marková, I., Navrátil, M., Pavelka, M., Pokorný, R., Šprtová, M., Zhang, R., Špunda, V., Grace, J. a Marek, M. Ecophysiological controls over the net ecosystem exchange of mountain spruce stand. Comparison of the response in direct vs. diffuse solar radiation. Global Change Biology. 2007, roč. 13, s. 157-168. ISSN 1354-1013.

Podnázev :
Rok * :	2007
Obor * :	Biofyzika
Kód ISSN * :	1354-1013
Oficiální název periodika * :	Global Change Biology
Stát vydavatele periodika * :	Spojené království Velké Británie a Severního Irska
Svazek periodika * :	Neuveden
Číslo periodika v rámci svazku * :	1
Číslo článku :
Ročník :	13
Počet stran článku * :	12
Strana od * :	157
Strana do * :	168
Kód UT WoS :	000243403900013
EID :
Poddruh recenzovaného článku :	Článek v impaktovaném časopise (Jimp)

Klíčová slova anglicky * :	CO2 and H2O fluxes; eddy covariance; light response curve; mountain forest ecosystem; NEE; photosynthetic efficiency; spectral composition of solar radiation; stomatal and canopy conductance
Popis v původním jazyce * :	Cloud cover increases the proportion of diffuse radiation reaching the Earth's surface and affects many microclimatic factors such as temperature, vapour pressure deficit and precipitation. We compared the relative efficiencies of canopy photosynthesis to diffuse and direct photosynthetic photon flux density (PPFD) for a Norway spruce forest (25-year-old, leaf area index 11 m2 m2) during two successive 7-day periods in August. The comparison was based on the response of net ecosystem exchange (NEE) of CO2 to PPFD. NEE and stomatal conductance at the canopy level (Gcanopy) was estimated from half-hourly eddy-covariance measurements of CO2 and H2O fluxes. In addition, daily courses of CO2 assimilation rate (AN) and stomatal conductance (Gs) at shoot level were measured using a gas-exchange technique applied to branches of trees. The extent of spectral changes in incident solar radiation was assessed using a spectroradiometer.
Popis v anglickém jazyce * :	Cloud cover increases the proportion of diffuse radiation reaching the Earth's surface and affects many microclimatic factors such as temperature, vapour pressure deficit and precipitation. We compared the relative efficiencies of canopy photosynthesis to diffuse and direct photosynthetic photon flux density (PPFD) for a Norway spruce forest (25-year-old, leaf area index 11 m2 m2) during two successive 7-day periods in August. The comparison was based on the response of net ecosystem exchange (NEE) of CO2 to PPFD. NEE and stomatal conductance at the canopy level (Gcanopy) was estimated from half-hourly eddy-covariance measurements of CO2 and H2O fluxes. In addition, daily courses of CO2 assimilation rate (AN) and stomatal conductance (Gs) at shoot level were measured using a gas-exchange technique applied to branches of trees. The extent of spectral changes in incident solar radiation was assessed using a spectroradiometer.

Typ zdroje financování výsledku * :

Projekty CEP/Záměry CEZ

Seznam projektů :

ID Projektu	Název projektu

Seznam ohlasů :

Ohlas

R01:	RIV/61988987:17310/07:00000223

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