No support for carbon storage of >1000 GtC in northern peatlands

This is a Preprint and has not been peer reviewed. This is version 3 of this Preprint.

Add a Comment

You must log in to post a comment.


Comments

There are no comments or no comments have been made public for this article.

Downloads

Download Preprint

Authors

Zicheng Yu , Fortunat Joos, Thomas K. Bauska, Benjamin D. Stocker, Hubertus Fischer, Julie Loisel, Victor Brovkin, Gustaf Hugelius, Christoph Nehrbass-Ahles, Thomas Kleinen

Abstract

Northern peatlands store large amounts of carbon (C) and have played an important role in the global carbon cycle since the Last Glacial Maximum. Most northern peatlands have established since the end of the deglaciation and accumulated C over the Holocene, leading to a total present-day stock of 500 ± 100 GtC. This is a consolidated estimate, emerging from a diversity of methods. Recently, Nichols and Peteet (2019 Nature Geoscience 12: 917-921) presented an estimate of the northern peat C stock of 1055 GtC—exceeding previous estimates by a factor of two. Here, we argue that this is an overestimate, caused by systematic bias introduced by their inclusion of data that is not representative for the major peatland regions and of records that lack direct measurements of C density. Furthermore, we argue that their estimate cannot be reconciled within the constraints offered by ice-core and marine records of stable C isotopes and estimated contributions from other processes that affected the terrestrial C storage during the Holocene.

DOI

https://doi.org/10.31223/osf.io/hynm7

Subjects

Biogeochemistry, Earth Sciences, Physical Sciences and Mathematics

Keywords

peat, carbon, Holocene, biogeochemistry, carbon budget, global carbon cycle, peatland

Dates

Published: 2019-12-04 22:56

Last Updated: 2021-01-14 23:09

Older Versions
License

CC BY Attribution 4.0 International