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Climate change and the soil
Date:7/23/2014

s means the observed increase in the rate of soil respiration accompanying rising temperatures is due to carbon dioxide released by the an uptick in the amount of litter falling on the forest floor and an increase in carbon from underground sources. It is not from a decrease in the overall amount of carbon stored in the soil.

Giardina noted "While we found that carbon stored in the mineral soil was insensitive to long-term warming, the loss of unprotected carbon responded strongly to temperature. This tells us that the sensitivity of each source of soil respiration needs to be quantified, and the aggregate response examined, before an understanding of ecosystem carbon balance in a warmer world can be achieved."


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Contact: Greg Asner
gpa@carnegiescience.edu
650-380-2828
Carnegie Institution
Source:Eurekalert

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