The influence of climate change on stomatal ozone flux to a mountain Norway spruce forest.
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.
Silesian University at Opava, Faculty of Philosophy and Science, Opava, Czech Republic. milos.zapletal@ekotoxa.cz
Miloš
M
Zapletal
Jan
J
Pretel
Petr
P
Chroust
Pavel
P
Cudlín
Magda
M
Edwards-Jonášová
Otmar
O
Urban
Radek
R
Pokorný
Radek
R
Czerný
Iva
I
Hůnová
D000393:Air Pollutants / Q000032:analysis / Q000378:metabolism*; D057231:Climate Change; D017753:Ecosystem; D008962:Models, Theoretical; D009664:Norway; D010126:Ozone / Q000032:analysis / Q000378:metabolism*; D028222:Picea / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism*; D054046:Plant Stomata / Q000737:chemistry / Q000378:metabolism*; D012621:Seasons; D014197:Trees / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism*
D000393:Air Pollutants; D010126:Ozone