Decadal biomass increment in early secondary succession woody ecosystems is increased by CO2 enrichment

Increasing atmospheric CO2 stimulates photosynthesis which can increase net primary production (NPP), but at longer timescales may not necessarily increase plant biomass. Here we analyse the four decade-long CO2-enrichme
Increasing atmospheric CO2 stimulates photosynthesis which can increase net primary production (NPP), but at longer timescales may not necessarily increase plant biomass. Here we analyse the four decade-long CO2-enrichment experiments in woody ecosystems that measured total NPP and biomass. CO2 enrichment increased biomass increment by 1.05 ± 0.26 kg C m−2 over a full decade, a 29.1 ± 11.7% stimulation of biomass gain in these early-secondary-succession temperate ecosystems. This response is predictable by combining the CO2 response of NPP (0.16 ± 0.03 kg C m−2 y−1) and the CO2-independent, linear slope between biomass increment and cumulative NPP (0.55 ± 0.17). An ensemble of terrestrial ecosystem models fail to predict both terms correctly. Allocation to wood was a driver of across-site, and across-model, response variability and together with CO2-independence of biomass retention highlights the value of understanding drivers of wood allocation under ambient conditions to correctly interpret and predict CO2 responses.
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Metadaten
Author:Anthony P. Walker, Martin G. De Kauwe, Belinda E. Medlyn, Sönke Zaehle, Colleen M. Iversen, Shinichi Asao, Bertrand Guenet, Anna Harper, Thomas Hickler, Bruce A. Hungate, Atul Kumar Jain, Yiqi Luo, Xingjie Lu, Meng Lu, Kristina Luus, J. Patrick Megonigal, Ram Oren, Edmund Ryan, Shijie Shu, Alan Talhelm, Ying-Ping Wang, Jeffrey M. Warren, Christian Werner, Jianyang Xia, Bai Yang, Donald R. Zak, Richard J. Norby
URN:urn:nbn:de:hebis:30:3-491467
DOI:http://dx.doi.org/10.1038/s41467-019-08348-1
ISSN:2041-1723
Pubmed Id:http://www.ncbi.nlm.nih.gov/pubmed?term=30765702
Parent Title (English):Nature Communications
Publisher:Nature Publishing Group UK
Place of publication:[London]
Document Type:Article
Language:English
Year of Completion:2019
Date of first Publication:2019/02/14
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2019/02/21
Tag:Biogeochemistry; Carbon cycle; Ecosystem ecology; Forest ecology
Volume:10
Issue:1, Art. 454
Pagenumber:13
First Page:1
Last Page:13
Note:
Open Access: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
HeBIS PPN:44623009X
Institutes:Geowissenschaften
Senckenbergische Naturforschende Gesellschaft
Biodiversität und Klima Forschungszentrum (BiK-F)
Dewey Decimal Classification:550 Geowissenschaften
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0

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