Biogeosciences
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Articles | Volume 21, issue 7
Articles | Volume 21, issue 7
https://doi.org/10.5194/bg-21-1801-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-21-1801-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 7
Research article
 | 
11 Apr 2024
Research article |  | 11 Apr 2024

Inclusion of bedrock vadose zone in dynamic global vegetation models is key for simulating vegetation structure and function

Dana A. Lapides, W. Jesse Hahm, Matthew Forrest, Daniella M. Rempe, Thomas Hickler, and David N. Dralle

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Latest update: 29 Oct 2025
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Short summary
Water stored in weathered bedrock is rarely incorporated into vegetation and Earth system models despite increasing recognition of its importance. Here, we add a weathered bedrock component to a widely used vegetation model. Using a case study of two sites in California and model runs across the United States, we show that more accurately representing subsurface water storage and hydrology increases summer plant water use so that it better matches patterns in distributed data products.
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