Effect of elevated ambient CO2 concentration on water use efficiency ofPinus sylvestriformis |
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| Authors: | Han Shijie Zhang Junhui Wang Chenrui Zou Chunjing Zhou Yumei Wang Xiaochun |
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| Institution: | (1) Institute of Applied Ecology, Chinese Academy of Sciences, 110015 Shenyang, P.R. China |
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| Abstract: | Pinus sylvestriformis is an important species as an indicator of global climate changes in Changbai Mountain, China. The water use efficiency (WUE)
of this species (11-year old) was studied on response to elevated CO2 concentration at 500±100 μL·L−1 by directly injecting CO2 into the canopy under natural condition in 1998–1999. The results showed that the elevated CO2 concentration reduced averagely stomatal opening, stomatal conductance and stomatal density to 78%, 80% and 87% respectively,
as compared to normal ambient. The elevated CO2 reduced the transpiration and enhances the water use efficiency (WUE) of plant.
The project was supported by Chinese Academy of Sciences
Responsible editor: Chai Ruihai |
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| Keywords: | Pinus sylvestriformis Water Use Efficiency (WUE) Elevated CO2 concentration |
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