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

Autor: Zapletal M; Ekotoxa s.r.o.-Centre for Environment and Land Assessment, Otická 37, 746 01 Opava, Czech Republic. milos.zapletal@ekotoxa.cz, Cudlín P, Chroust P, Urban O, Pokorný R, Edwards-Jonášová M, Czerný R, Janouš D, Taufarová K, Večeřa Z, Mikuška P, Paoletti E
Jazyk: angličtina
Zdroj: Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2011 May; Vol. 159 (5), pp. 1024-34. Date of Electronic Publication: 2010 Dec 22.
DOI: 10.1016/j.envpol.2010.11.037
Abstrakt: 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.
(Copyright © 2010 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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