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. 2021 Jun 4;12:636709. doi: 10.3389/fpls.2021.636709

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Copyright © 2021 Jansson, Faiola, Wingler, Zhu, Kravchenko, de Graaff, Ogden, Handakumbura, Werner and Beckles.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The terrestrial carbon (C) cycle. Carbon stocks (boxes) are shown as gigatons (GT), and fluxes (arrows) are shown in GT per year. Respiration refers to accumulated plant and microbial respiration.