Počet záznamů: 1

Ozone flux over a Norway spruce forest and correlation with net ecosystem production

  1. 1.
    0358918 - UEK-B 2012 RIV GB eng J - Článek v odborném periodiku
    Zapletal, M. - Cudlín, Pavel - Chroust, P. - Urban, Otmar - Pokorný, Radek - Edwards, Magda - Czerný, Radek - Janouš, Dalibor - Taufarová, Klára - Večeřa, Zbyněk - Mikuška, Pavel - Paoletti, E.
    Ozone flux over a Norway spruce forest and correlation with net ecosystem production.
    Environmental Pollution. Roč. 159, č. 5 (2011), s. 1024-1034 ISSN 0269-7491
    Grant CEP: GA MŽP SP/1B7/189/07
    Výzkumný záměr: CEZ:AV0Z60870520; CEZ:AV0Z40310501
    Klíčová slova: ozone deposition * stomatal conductance * deposition velocity * friction velocity * gradient method * tropospheric ozone * net ecosystem production
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 3.746, rok: 2011

    Daily ozone deposition flux to a Norway spruce forest in Czech Republic was measured using the gradient method in July and August 2008. Results were in good agreement with a deposition flux model. The mean daily stomatal uptake of ozone was around 47% of total deposition. Average deposition velocity was 0.39 cm s−1 and 0.36 cm s−1 by the gradient method and the deposition model, respectively. Measured and modelled non-stomatal uptake was around 0.2 cm s−1. In addition, net ecosystem production (NEP) was measured by using Eddy Covariance and correlations with O3 concentrations at 15 m a.g.l., total deposition and stomatal uptake were tested. Total deposition and stomatal uptake of ozone significantly decreased NEP, especially by high intensities of solar radiation.
    Trvalý link: http://hdl.handle.net/11104/0196826