Библиографическое описание:A global map of root biomass across the world's forests : научное издание / Y. Huang [et al.]. - Текст : непосредственный // Earth Syst. Sci. Data = Earth System Science Data. - 2021. - Vol. 13, Is. 8. - P. 4263-4274. - Cited Reference Count: 57. - Financial support. Yuanyuan Huang, Daniel S. Goll and Phillipe Ciais received support from the European Research Council Syn- ergy project SyG-2013-610028 IMBALANCE-P and Phillipe Ciais and Yuanyuan Huang from the ANR CLAND Convergence Institute. Yuanyuan Huang, Dmitry Schepaschenko and Maurizio Santoro were funded through the ESA Climate Change Initiative BIOMASS project. Collecting Russian data was supported by the Russian Science Foundation (project no. 19-77-30015). Rose Z. Abramoff received support from the French government grant “Make Our Planet Great Again”. - ESA Climate Change Initiative BIOMASS project. - Russian Science FoundationRussian Science Foundation (RSF). 19-77-30015. - AUG 31. - ISSN 1866-3508. - ISSN 1866-3516, DOI 10.5194/essd-13-4263-2021.
Аннотация:As a key component of the Earth system, roots play a key role in linking Earth's lithosphere, hydrosphere, biosphere and atmosphere. 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 (similar to 1 km) root biomass dataset, including fine and coarse roots. 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. Earlier studies (Jackson et al., 1997; Robinson, 2007; Saugier et al., 2001) are 44%-226% larger than our estimations of the total root biomass in tropical, temperate and boreal forests. The total global forest root biomass from a recent estimate (Spawn et al., 2020) is 24% larger than this study. The smaller estimation from this study is attributable to the updated forest area, spatially explicit aboveground biomass density used to predict the patterns of root biomass, new root measurements and the upscaling methodology. We show specifically that the root shoot allometry is one underlying driver that has led to methodological overestimation of root biomass in previous estimations.
