Articles | Volume 18, issue 1
https://doi.org/10.5194/bg-18-55-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-18-55-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Jan 2021
Research article |
| 05 Jan 2021
| 05 Jan 2021
Deepening roots can enhance carbonate weathering by amplifying CO2-rich recharge
Department of Civil and Environmental Engineering, Pennsylvania
State University, University Park, PA 16802, United States
Pamela L. Sullivan
College of Earth, Ocean, and Atmospheric Science, Oregon State
University, Corvallis, OR 97331, United States
Gwendolyn L. Macpherson
Department of Geology, University of Kansas, Lawrence, KS 66045,
United States
Sharon A. Billings
Department of Ecology and Evolutionary Biology and Kansas
Biological Survey, University of Kansas, Lawrence, KS 66045, United States
Department of Civil and Environmental Engineering, Pennsylvania
State University, University Park, PA 16802, United States
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Short summary
Carbonate weathering is essential in regulating carbon cycle at the century timescale. Plant roots accelerate weathering by elevating soil CO2 via respiration. It however remains poorly understood how and how much rooting characteristics modify flow paths and weathering. This work indicates that deepening roots in woodlands can enhance carbonate weathering by promoting recharge and CO2–carbonate contact in the deep, carbonate-abundant subsurface.
Carbonate weathering is essential in regulating carbon cycle at the century timescale. Plant...
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