Ecological Research

, Volume 16, Issue 2, pp 347–358 | Cite as

High performance of CO2–temperature gradient chamber newly built for studying the global warming effect on a plant population

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Abstract

To study the effect of global warming concomitant with rising CO2 on plant growth under field-like conditions, a CO2–temperature gradient chamber (CTGC) was created from a standard temperature gradient chamber (TGC). Despite great daily and seasonal changes in ambient air temperature, the gradient of air temperatures was simulated by 5°C warmed conditions at the air outlet, rising at a rate of 1°C at 5 m intervals. Also, CO2 concentrations were linearly increased from the air inlet to the outlet; those at the air inlet and 25 m distance from the air inlet were 372 p.p.m and 756 p.p.m. (doubled), respectively. The CTGC proved successful in biological experiments conducted through a full growth season in 1998. This apparatus will be useful for understanding plant response to simultaneous changes in CO2 and temperature. Being a combination of a TGC and a CO2 gradient chamber, the improved CTGC allows parameters and validation data sets to both be obtained for models contributing to plant growth, species composition, and global carbon flux analysis.

Key words

CO2–temperature gradient field-like conditions global warming plant population 
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Copyright information

© Ecological Society of Japan 2001

Authors and Affiliations

  • Jae-Seok Lee
    • 1
    • 2
  • Tetsuyuki Usami
    • 1
  • Takehisa Oikawa
    • 1
  1. 1.Institute of Biological SciencesUniversity of TsukubaTsukubaIbarakiJapan
  2. 2.Terrestrial Environment Research CenterUniversity of TsukubaTsukubaIbarakiJapan

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