Articles | Volume 13, issue 9
https://doi.org/10.5194/essd-13-4263-2021
https://doi.org/10.5194/essd-13-4263-2021
Data description paper
 | 
31 Aug 2021
Data description paper |  | 31 Aug 2021

A global map of root biomass across the world's forests

Yuanyuan Huang, Phillipe Ciais, Maurizio Santoro, David Makowski, Jerome Chave, Dmitry Schepaschenko, Rose Z. Abramoff, Daniel S. Goll, Hui Yang, Ye Chen, Wei Wei, and Shilong Piao

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Revised manuscript accepted for ESSD
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Cited articles

Bloom, A. A., Exbrayat, J. F., van der Velde, I. R., Feng, L., and Williams, M.: The decadal state of the terrestrial carbon cycle: Global retrievals of terrestrial carbon allocation, pools, and residence times, P. Natl. Acad. Sci. USA, 113, 1285–1290, https://doi.org/10.1073/pnas.1515160113, 2016. 
Breiman, L.: Random forests, Mach. Learn., 45, 5–32, https://doi.org/10.1023/a:1010933404324, 2001. 
Cairns, M. A., Brown, S., Helmer, E. H., and Baumgardner, G. A.: Root biomass allocation in the world's upland forests, Oecologia, 111, 1–11, https://doi.org/10.1007/s004420050201, 1997. 
Cheng, D. L. and Niklas, K. J.: Above- and below-ground biomass relationships across 1534 forested communities, Ann. Bot., 99, 95–102, https://doi.org/10.1093/aob/mcl206, 2007. 
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Roots play a key role in our Earth system. Here we combine 10 307 field measurements of forest root biomass worldwide with global observations of forest structure, climatic conditions, topography, land management and soil characteristics to derive a spatially explicit global high-resolution (~ 1 km) root biomass dataset. In total, 142 ± 25 (95 % CI) Pg of live dry-matter biomass is stored belowground, representing a global average root : shoot biomass ratio of 0.25 ± 0.10.
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