- Nitrogen-Fixing Bacteria - Benefits of CO2 - Carbon Dioxide
Our mission is to educate the public on the positive effects of additional atmospheric CO2 and help prevent the inadvertent negative impact to human, plant and animal life if we reduce CO2
 
Home
 
    
Why CO2 is Good
 
    
Climate Change
 
    
Politics are Not Green
 
    
News & Media
 
    
Stay Informed
 
    
About Us
 
    
 
  Nitrogen-Fixing Bacteria

<< Back

The Role of Roots

Symbiotic Soil Fungi

Carbon Starvation

Higher CO2 Produces Several-fold Increases in Plant Nitrogen Fixation
One of the reasons why low soil nitrogen levels, in particular, are not an insurmountable impediment to CO2-induced growth enhancement is that plants exposed to elevated atmospheric CO2 concentrations do not need to invest as much nitrogen in their photosynthetic apparatus, as it operates so much more efficiently at higher CO2 levels.  In addition, atmospheric CO2 enrichment has the ability to directly stimulate the activity of nitrogen-fixing bacteria. 

The capacity of these symbiotic microorganisms to remove nitrogen from the atmosphere and make it available to vegetation appears to be limited by their host plants' rates of carbohydrate production. Consequently, anything that stimulates vegetative productivity, including atmospheric CO2 enrichment, generally stimulates bacterial nodule growth and activity.  It is not surprising, therefore, that several-fold increases in the air's CO2 content have been found to produce several-fold increases in nitrogen fixation in a number of experiments.

Indeed, the evidence clearly shows that, even in the face of severe shortages of nitrogen and other nutrients, plant photosynthetic rates may still be significantly stimulated by atmospheric CO2 enrichment, setting in motion a number of additional phenomena that promote vegetative productivity even more.

 

 
Print Print    Email Email
  Share link on Twitter Tweet  

 
** For additional peer-reviewed scientific references and an in-depth discussion of the science supporting our position, please visit Climate Change Reconsidered: The Report of the Nongovernmental Planel on Climate Change (www.climatechangereconsidered.org), or CO2 Science (www.co2science.org).
 
 
RELATED CONTENT

More Videos & Media ...

Carbon Dioxide in the atmosphere is essential to life on earth and is directly responsible for the food we eat and the oxygen we breathe.


CO2 Myths

Plants need CO2 addresses the myth that purveyed the public dialog around CO2

Read more >>