The influence of climate change on stomatal ozone flux to a mountain Norway spruce forest

0383087 - ÚVGZ 2013 RIV GB eng J - Journal Article
Zapletal, M. - Pretel, J. - Chroust, P. - Cudlín, Pavel - Edwards-Jonášová, Magda - Urban, Otmar - Pokorný, Radek - Czerný, Radek - Hůnová, I.
The influence of climate change on stomatal ozone flux to a mountain Norway spruce forest.
Environmental Pollution. Roč. 169, OCT 2012 (2012), s. 267-273. ISSN 0269-7491. E-ISSN 1873-6424
R&D Projects: GA MŠMT(CZ) ED1.1.00/02.0073; GA MŠMT OC10022; GA MŠMT(CZ) LM2010007
Institutional research plan: CEZ:AV0Z60870520
Keywords : Stomatal ozone flux * AOT40 * Phytotoxic Ozone Dose * Norway spruce * Net ecosystem production * Ozone * Climate change
Subject RIV: EH - Ecology, Behaviour
Impact factor: 3.730, year: 2012

Daily stomatal ozone flux to a mountain Norway spruce forest stand at the Bily Kriz experimental site in the Beskydy Mts. (Czech Republic) was modelled using a multiplicative model during the 2009 growing season. The multiplicative model was run with meteorological data for the growing season 2009 and ALADIN-CLIMATE/CZ model data for the 2030 growing season. The exceedance of the flux-based critical level of O-3 (Phytotoxic Ozone Dose) might be lower for Norway spruce at the Bily Kriz experimental site in a future climate (around 2030), due to increased stomatal closure induced by climate change, even when taking into account increased tropospheric background O-3 concentration. In contrast, exceedance of the concentration-based critical level (AOT40) of O-3 will increase with the projected increase in background O-3 concentration. Ozone concentration and stomatal flux of ozone significantly decreased NEP under both present and future climatic conditions, especially under high intensities of solar radiation.
Permanent Link: http://hdl.handle.net/11104/0213138