300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Pinus strobus L. [Eastern White Pine]
300 ppm
|
600 ppm
|
900 ppm
|
|
Number of Results |
3
|
|
|
Arithmetic Mean |
31.7%
|
|
|
Standard Error |
9%
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
Bazzaz et al. (1990) |
greenhouse, 2-liter pots
|
14%
|
|
|
Godbold et al. (1997) |
glasshouse, roots
|
52%
|
|
|
Godbold et al. (1997) |
glasshouse, whole plant
|
29%
|
|
|