23 February 2010

Plants Thrive on 1000 ppm CO2 or More

Carbon dioxide (CO2) is an essential component of photosynthesis (also called carbon assimilation). Photosynthesis is a chemical process that uses light energy to convert CO2 and water into sugars in green plants. These sugars are then used for growth within the plant, through respiration...as CO2 levels are raised by 1,000 ppm photosynthesis increases proportionately resulting in more sugars and carbohydrates available for plant growth. _OptimalCO2

Most plants and corals evolved in an atmosphere with much higher concentrations of CO2 than currently exist around the planet (click on graph at right). In fact, most plants and sea creatures crave more CO2 for optimal growth, and would grow faster and larger if provided with more CO2 food.

Many commercial greenhouses use CO2 generators to supplement their internal air up to 1500 ppm of CO2.

Human burning of fossil fuels leads to incrementally higher levels of CO2 in Earth's atmospheric mix -- but not nearly enough to provide optimal growth for most plants. Consequently, atmospheric levels of CO2 have not risen proportionately to the quantity of CO2 exhausted into the atmosphere by human activity -- the plants and oceans are grabbing it for their own use.

Modern climate science has benefited from exaggerating fears about carbon dioxide, and the doom CO2 is supposed to bring to Earth's environment. But Earth's life evolved in atmospheres many times higher in CO2 than at present -- leaving modern plants and ocean life relatively carbon-starved.

It is time for climate science to step away from contrived and exaggerated claims of doom, and to return to a genuine science of observation and falsifiability. Politics has played far too large a part in this destructive carbon hysteria, and must be tamed before we all fall victim to the political excesses of carbon alarmists and carbon opportunists.

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Blogger ee_ga said...

If only American news media would give this story the attention it truly merits. I only wish this information, and climate gate, had received attention before the passing of cap and trade legislation in Europe. I just hope the people of Europe demand a criminal investigation, so much has been lost to this false science, an example should be made before politicians try to use science as a means of gaining power again.

Tuesday, 23 February, 2010  
Blogger kurt9 said...

Its been well-known among paleontologists that the CO2 levels have been far higher during most of the geological history of the Earth than they are now, like 4-5 times higher. It is also well-known in human history that civilizational well-being correlates with warmer climates and that global cooling knocked off several major civilizations, including Rome.

Global warming, if it was real, would actually be good for both us and the planet.

Tuesday, 23 February, 2010  
Blogger Unknown said...

Sure, plants benefit from high carbon conditions, very few scientists are out there trying to refute that, but would 1000 ppm be good for the global biosphere? Hell no; 1000 ppm conditions would be unbearably hot for almost all plant and wildlife. It's fine if you're growing in a temperature regulated greenhouse, but most of the world's life is not contained, they will bear the brunt of extreme high temperatures and rainfall.

[Please allow this comment through moderation, don't be one of those guys that doesn't allow opinions other than his own.]


Monday, 09 August, 2010  
Blogger sysc said...

The co2 rate exceed 1000 ppm, the plant growth rate will decrease for most non-aqua plants.

Thus if the Co2 of global density exceed 1000 ppm, it will be disaster.Due to the plant absorb Co2 rate decreasing and human continue produce the same amount of Co2. The plant will be dead. The Co2 density is not good for plant when it goes extremenly high(exceed 1000 ppm).

Sunday, 26 June, 2011  
Blogger sysc said...

"Many commercial greenhouses use CO2 generators to supplement their internal air up to 1500 ppm of CO2. "

The green houses provide 1500 ppm of Co2 is to keep plant on the high Co2 rate. In order to save the energy, the green house have to lift the Co2 level then the plant can absorb co2 full day without tigger the Co2 equipment again. The best absorb rate for plant is around 700 ppm. Thus 1500 ppm can let the plant eat for 1 or 2 day.

Sunday, 26 June, 2011  
Blogger al fin said...

Frank and sysc:

You need valid data to support your assertions.

There is already too much carbon hysteria based upon groundless fears. Time to return to genuine science.

Sunday, 26 June, 2011  
Blogger sysc said...

Al fin,

Thanks for the information. I agree with the part that current society get overreact about Co2.

The hypothesis that Co2 will exceed 1000 ppm is nearly impossible happen in our life time.Past centery, the Co2 density increase around 100 ppm, that is from 200 to 300 in global climate.

In our life time, the Co2 density is nearly impossible to exceed 600 ppm.

I am the kind of person that only care about myself and the children that I can see. For this reason, in my life time, the Co2 won't cause people dead/disease.So I am agree the part that political excesses of Co2.

In the other part, I am also interested in the green house plant growth.With green house growth, artificial light and temperature control is necessarily.(That generate Co2) In order to accelerate the plant growth, Co2 density is necessarily to control.

In my small green house, I control the condition in the Co2 density 700-1100 ppm. One day , I forget to control the Co2 density. When I notice that, the plant is suffer from Co2 poison.

I also interested in the problem to find out the best Co2 density to green plant.If you get any idea , please let me know. Currently, the information from the Co2 clean book tell me that the plant is good at 1000 ppm below or slightly higher.

In my opinion, that different plant may suit for different Co2 density.So that the 'Co2 clean book' only suitable for the plant that the book mention. For my green house, the best Co2 density still remain mystery.


Friday, 08 July, 2011  

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