Articles | Volume 11, issue 4
Earth Syst. Sci. Data, 11, 1839–1852, 2019
https://doi.org/10.5194/essd-11-1839-2019
Earth Syst. Sci. Data, 11, 1839–1852, 2019
https://doi.org/10.5194/essd-11-1839-2019

Data description paper 28 Nov 2019

Data description paper | 28 Nov 2019

Global variability in belowground autotrophic respiration in terrestrial ecosystems

Xiaolu Tang et al.

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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.