Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 11, issue 4
Articles | Volume 11, issue 4
https://doi.org/10.5194/essd-11-1839-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-11-1839-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 11, issue 4
Data description paper
 | 
28 Nov 2019
Data description paper |  | 28 Nov 2019

Global variability in belowground autotrophic respiration in terrestrial ecosystems

Xiaolu Tang, Shaohui Fan, Wenjie Zhang, Sicong Gao, Guo Chen, and Leilei Shi

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Short summary
We estimated the missing global carbon flux component – global belowground autotrophic respiration (RA), using global published observations with the linkage of global variables with random forest. Globally, annual mean RA was 43.8 ± 0.4 Pg C yr-1, with a temporally increasing trend of 0.025 ± 0.006 Pg C yr-2 in 1980–2012. Precipitation dominated 56 % of global areas of the spatial pattern of RA. The RA database also has great potential to serve as a benchmark for future data–model comparisons.
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