300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Populus trichocarpa Torr. & Gray [Black Cottonwood]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
5
|
|
|
| Arithmetic Mean |
124%
|
|
|
| Standard Error |
93.2%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Curtis et al. (2000) |
open-top chambers, low-N soil, stem
|
11%
|
|
|
|
Curtis et al. (2000) |
open-top chambers, high-N soil, stem
|
29%
|
|
|
|
Rae et al. (2007) |
Biomass (as approximated from stem volume data) of plants grown from cuttings for 152 days in John Innes no. 2 compost (lime free) in plastic tubes (91 cm high, 15 cm diameter) buried to a depth of 10 cm out-of-doors in open-top chambers
|
540%
|
|
|
|
Sigurdsson et al. (2001) |
closed-top chamber, low soil fertility
|
0%
|
|
|
|
Sigurdsson et al. (2001) |
closed-top chamber, high soil fertility
|
40%
|
|
|