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High performance of CO 2 –temperature gradient chamber newly built for studying the global warming effect on a plant population
Author(s) -
Lee JaeSeok,
Usami Tetsuyuki,
Oikawa Takehisa
Publication year - 2001
Publication title -
ecological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.628
H-Index - 68
eISSN - 1440-1703
pISSN - 0912-3814
DOI - 10.1046/j.1440-1703.2001.00398.x
Subject(s) - inlet , temperature gradient , environmental science , atmospheric sciences , air temperature , plant growth , flux (metallurgy) , carbon dioxide , global warming , carbon fibers , concentration gradient , population , chemistry , meteorology , climate change , materials science , soil science , horticulture , ecology , physics , biology , mechanical engineering , demography , organic chemistry , sociology , composite number , engineering , composite material
To study the effect of global warming concomitant with rising CO 2 on plant growth under field‐like conditions, a CO 2 –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, CO 2 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 CO 2 and temperature. Being a combination of a TGC and a CO 2 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.