300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Populus deltoides Bartr. ex Marsh. x Polulus nigra L. [Robusta Poplar Clone]
300 ppm
|
600 ppm
|
900 ppm
|
|
Number of Results |
6
|
|
|
Arithmetic Mean |
63.3%
|
|
|
Standard Error |
13.7%
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
Calfapietra et al. (2003) |
Three-year FACE study of trees growing naturally out-of-doors and rooted in the ground that were started from 25-cm-long cuttings; aboveground biomass after second year
|
63%
|
|
|
Calfapietra et al. (2003) |
Three-year FACE study of trees growing naturally out-of-doors and rooted in the ground that were started from 25-cm-long cuttings; aboveground biomass after third year
|
45%
|
|
|
Calfapietra et al. (2003) |
Three-year FACE study of trees growing naturally out-of-doors and rooted in the ground that were started from 25-cm-long cuttings; belowground biomass after third year
|
48%
|
|
|
Ceulemans et al. (1995) |
open-top chamber
|
32%
|
|
|
Ceulemans et al. (1996) |
open-top chambers, first year
|
57%
|
|
|
Ceulemans et al. (1996) |
open-top chambers, second year
|
135%
|
|
|