Effect of elevated ambient CO2 concentration on water use efficiency ofPinus sylvestriformis
Han Shijie , Zhang Junhui , Wang Chenrui , Zou Chunjing , Zhou Yumei , Wang Xiaochun
Journal of Forestry Research ›› 1999, Vol. 10 ›› Issue (4) : 209 -210.
Effect of elevated ambient CO2 concentration on water use efficiency ofPinus sylvestriformis
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.
Pinus sylvestriformis / Water Use Efficiency (WUE) / Elevated CO2 concentration
/
| 〈 |
|
〉 |
PDF
