Percent Dry Weight (Biomass) Increases for
300, 600 and 900 ppm Increases in the Air's CO2 Concentration:


For a more detailed description of this table, click here.

Pinus ponderosa P. & C. Lawson [Ponderosa Pine]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
47
2
 
 Arithmetic Mean
63.3%
45%
 
 Standard Error
11.6%
7.1
 

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

BassiriRad et al. (1997)

greenhouse, 3.5 liter pots
41%

 

 

Callaway et al. (1994)

growth chambers, 10/25C night/day temperature
6%

 

 

Callaway et al. (1994)

growth chambers, 15/30C night/day temperature
26%

 

 

De Lucia et al. (1994)

30 days in growth chamber, temp.= 25C (day)/15C (night)
7%

 

 

De Lucia et al. (1994)

30 days in growth chamber, temp.= 30C (day)/15C (night)
25%

 

 

De Lucia et al. (1994)

60 days in growth chamber, temp.= 25C (day)/15C (night)
5%

 

 

De Lucia et al. (1994)

60 days in growth chamber, temp.= 30C (day)/15C (night)
23%

 

 

De Lucia et al. (1997)

controlled environment chambers
28%

 

 

Griffin et al. (1995)

greenhouse, low nitrogen
41%

 

 

Griffin et al. (1995)

greenhouse, high nitrogen
350%

 

 

Griffin et al. (1996)

phytotron, low nitrogen
40%

 

 

Griffin et al. (1996)

phytotron, high nitrogen
303%

 

 

Griffin et al. (1997)

phytotron, low nitrogen
41%

 

 

Griffin et al. (1997)

phytotron, medium nitrogen
350%

 

 

Griffin et al. (1997)

phytotron, high nitrogen
152%

 

 

Johnson et al. (1995)

controlled environment chambers, 18 weeks, low nitrogen
41%

 

 

Johnson et al. (1995)

controlled environment chambers, 18 weeks, medium nitrogen
16%

 

 

Johnson et al. (1995)

controlled environment chambers, 18 weeks, high nitrogen
92%

 

 

Johnson et al. (1995)

controlled environment chambers, 36 weeks, low nitrogen
-14%

 

 

Johnson et al. (1995)

controlled environment chambers, 36 weeks, medium nitrogen
-2%

 

 

Johnson et al. (1995)

controlled environment chambers, 36 weeks, high nitrogen
-5%

 

 

Johnson et al. (1995)

controlled environment chambers, 58 weeks, low nitrogen
-2%

 

 

Johnson et al. (1995)

controlled environment chambers, 58 weeks, medium nitrogen
59%

 

 

Johnson et al. (1995)

controlled environment chambers, 58 weeks, high nitrogen
63%

 

 

Johnson et al. (1997)

open-top chambers, low nitrogen
69%

 

 

Johnson et al. (1997)

open-top chambers, medium nitrogen
42%

 

 

Johnson et al. (1997)

open-top chambers, high nitrogen
60%

 

 

Johnson et al. (1998)

environment chambers, lab study 1, low nitrogen
0%

 

 

Johnson et al. (1998)

environment chambers, lab study 1, high nitrogen
65%

 

 

Johnson et al. (1998)

environment chambers, lab study 2, low nitrogen
12%

 

 

Johnson et al. (1998)

environment chambers, lab study 2, high nitrogen
55%

 

 

Johnson et al. (1998)

field study, low nitrogen
69%

 

 

Johnson et al. (1998)

field study, high nitrogen
58%

 

 

King et al. (1996)

greenhouse, roots, low temperature, low nitrogen
131%

 

 

King et al. (1996)

greenhouse, roots, low temperature, high nitrogen
73%

 

 

King et al. (1996)

greenhouse, roots, high temperature, low nitrogen
74%

 

 

King et al. (1996)

greenhouse, roots, high temperature, high nitrogen
83%

 

 

King et al. (1997)

greenhouse, secondary roots, low temperature
100%

 

 

King et al. (1997)

greenhouse, secondary roots, high temperature
88%

 

 

Maherali and De Lucia (2000)

growth chamber, low temp.= 25C (day)/15C (night)
18%

35%

 

Maherali and De Lucia (2000)

growth chamber, high temp.= 30C (day)/20C (night)
28%

55%

 

Phillips et al. (2006)

Fine-root production biomass of well-watered, but differentially-fertilized with N that had no effect on the results, 1.5-year-old seedlings grown for 4 more years in open-top chambers during year 1
10%

 

 

Phillips et al. (2006)

Fine-root production biomass of well-watered, but differentially-fertilized with N that had no effect on the results, 1.5-year-old seedlings grown for 4 more years in open-top chambers during year 2
34%

 

 

Phillips et al. (2006)

Fine-root production biomass of well-watered, but differentially-fertilized with N that had no effect on the results, 1.5-year-old seedlings grown for 4 more years in open-top chambers during year 3
77%

 

 

Phillips et al. (2006)

Fine-root production biomass of well-watered, but differentially-fertilized with N that had no effect on the results, 1.5-year-old seedlings grown for 4 more years in open-top chambers during year 4
29%

 

 

Phillips et al. (2009)

Fine roots of one-year-old half-sib seedlings grown for three years in sunlit controlled-environment chambers in a one-meter-deep reconstructed ponderosa-pine forest soil
18%

 

 

Tingey et al. (2005)

Fine root biomass of seedlings grown for four years in open-top chambers in soil of adequate fertility
94%

 

 

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