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Name: Joseph
Status: other
Grade: other
Location: AR
Country: N/A
Date: June 2006

Question:
Besides lowering carbon emissions, are there any known ways of reducing co2 levels?

I have read about studies indicating that some plants, for instance Sunflowers, possibly have a much higher efficiency in absorbing co2 than average, which could be a reason to plant more of them.



Replies:
It is true that some plants absorb more CO2 than others. However, the calculation is CO2 per plant multiplied by the area or number of the plants. The area unit hectare is frequently used by scientists. It is equal to 100 km ^2, so it is a square 10 x 10 kilometers. The vegetation that meets both these criteria are tropical rain forests and phytoplankton in the oceans. In addition, the "real" efficiency is more complicated than I stated. To get a "true" estimate one has to factor in the carbon cycles, and there are several, which "shift" depending upon the amount of CO2 in the atmosphere.

The complexity of the problem is sometimes oversimplified by proponents (and opponents) who have other agendas.

Vince Calder



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