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Virpi Palomäki (email), Alpo Hassinen, Matti Lemettinen, Timo Oksanen, Heljä-Sisko Helmisaari, Jarmo Holopainen, Seppo Kellomäki, Toini Holopainen

Open-top chamber fumigation system for exposure of field grown Pinus sylvestris to elevated carbon dioxide and ozone concentration

Palomäki V., Hassinen A., Lemettinen M., Oksanen T., Helmisaari H.-S., Holopainen J., Kellomäki S., Holopainen T. (1998). Open-top chamber fumigation system for exposure of field grown Pinus sylvestris to elevated carbon dioxide and ozone concentration. Silva Fennica vol. 32 no. 3 article id 681. https://doi.org/10.14214/sf.681

Abstract

An open-top chamber fumigation system was built in a young Scots pine stand to study the effects of realistic elevated ozone (O3) and carbon dioxide (CO2) concentrations and their combination on trees in natural conditions. Doubled CO2 concentration compared to present ambient concentration, and O3 concentration between 40 ppb and 70 ppb in the first study year (1994) and doubled O3 concentration in years 1995 and 1996 were the target concentrations in the chambers. The O3 concentration in the chambers was successfully maintained close to the target concentration and differences between chambers were small. The mean CO2 concentration in the CO2 treatment was ca. 100 ppm below the target, but was maintained at this level throughout the growing season. Two degrees higher mean air temperature and slightly lower light intensity compared to open air were measured in the chambers. The operation of the fumigation system was satisfactory during the three study years and repeatability of the gas treatments can be regarded good in this low cost exposure system.

Keywords
Pinus sylvestris; CO2; open-top chamber; O3

Author Info
  • Palomäki, University of Kuopio, Department of Ecology and Environmental Science, P.O.Box 1627, FIN-70211 Kuopio, Finland E-mail virpi.palomaki@uku.fi (email)
  • Hassinen, Mekrijärvi Research Station, FIN-82900 Ilomantsi, Finland E-mail ah@nn.fi
  • Lemettinen, Mekrijärvi Research Station, FIN-82900 Ilomantsi, Finland E-mail ml@nn.fi
  • Oksanen, University of Kuopio, Department of Ecology and Environmental Science, P.O.Box 1627, FIN-70211 Kuopio, Finland E-mail to@nn.fi
  • Helmisaari, Finnish Forest Research Institute, Department of Forest Ecology, P.O.Box 18, FIN-01301 Vantaa, Finland E-mail hsh@nn.fi
  • Holopainen, Agricultural Research Centre, FIN-31600 Jokioinen, Finland E-mail jh@nn.fi
  • Kellomäki, University of Joensuu, Faculty of Forestry, P.O.Box 111, FIN-80101 Joensuu, Finland E-mail sk@nn.fi
  • Holopainen, University of Kuopio, Department of Ecology and Environmental Science, P.O.Box 1627, FIN-70211 Kuopio, Finland E-mail th@nn.fi

Received 18 September 1997 Accepted 6 July 1998 Published 31 December 1998

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Available at https://doi.org/10.14214/sf.681 | Download PDF

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Palomäki V., Hassinen A. et al. (1998) Open-top chamber fumigation system for exposure .. Silva Fennica vol. 32 no. 3 article id 681