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. 2020 Jul 7;8(2):nwaa145. doi: 10.1093/nsr/nwaa145

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© The Author(s) 2020. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — (a) Regional estimates of soil heterotrophic respiration from this study in blue and from two other estimates obtained using an independent approach from upscaling a global data set of site-level field measurements [38] by reference [31]. The whisker bars indicate the interquartile range and the full range. (b) Regional estimates of the ratio between soil heterotrophic respiration and NPP for each region with mean and median values of distributions calculated using a Monte-Carlo analysis (see ‘Methods’ section).