Earth System Dynamics
Earth System Dynamics
ESD
Articles | Volume 10, issue 3
Articles | Volume 10, issue 3
https://doi.org/10.5194/esd-10-525-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esd-10-525-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 10, issue 3
Research article
 | 
02 Sep 2019
Research article |  | 02 Sep 2019

Characteristics of soil profile CO2 concentrations in karst areas and their significance for global carbon cycles and climate change

Qiao Chen

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Short summary
The missing carbon sink is puzzling since carbon cycle is related to global climate. The varying characteristics of soil profile CO2 concentration in carbonate areas and noncarbonates were investigated, together with pH, SOC, and isotope. It is found that carbonate corrosion deeply consumes soil CO2, which accounts for an average of 36 %. Such a process is important for karst carbon cycles and global climate changes, and may be a potential part of the missing sink.
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