300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Populus trichocarpa x Populus deltoides [Hybrid Poplar]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
7
|
|
|
| Arithmetic Mean |
76.7%
|
|
|
| Standard Error |
23.4%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Ceulemans et al. (1995) |
open-top chamber
|
21%
|
|
|
|
Ceulemans et al. (1996) |
open-top chambers, first year
|
36%
|
|
|
|
Ceulemans et al. (1996) |
open-top chambers, second year
|
100%
|
|
|
|
Gardner et al. (2005) |
Year one biomass of pre-flushed hardwood stem cuttings grown for two seasons in open-top chambers
|
33%
|
|
|
|
Gardner et al. (2005) |
Year two biomass of pre-flushed hardwood stem cuttings grown for two seasons in open-top chambers
|
27%
|
|
|
|
Rae et al. (2007) |
Biomass (as approximated from stem volume data) of hybrid plants (53-242) 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
|
200%
|
|
|
|
Rae et al. (2007) |
Biomass (as approximated from stem volume data) of hybrid plants (53-246) 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
|
120%
|
|
|