300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Semi-Natural Grassland in Minnesota, USA
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
1
|
|
|
| Arithmetic Mean |
17%
|
|
|
| Standard Error |
0%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Dijkstra et al. (2005) |
Four C3 grasses, four C4 grasses, four forbs and four legumes grown individually and in various combinations for three years in a FACE study in Minnesota, USA
|
17%
|
|
|