Janssens, I. A.
Canadell, J. G.
Curtis, P. S.
Law, B. E.
Limousin, J. M.
Monson, R. K.
Moors, E. J.
Munger, J. W.
Piao, S. L.
AffiliationUniv Arizona, Tree Ring Res Lab
Univ Arizona, Sch Nat Resources & Environm
MetadataShow full item record
PublisherNATURE PUBLISHING GROUP
CitationAtmospheric deposition, CO2, and change in the land carbon sink 2017, 7 (1) Scientific Reports
Rights© The Author(s) 2017. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractConcentrations of atmospheric carbon dioxide (CO2) have continued to increase whereas atmospheric deposition of sulphur and nitrogen has declined in Europe and the USA during recent decades. Using time series of flux observations from 23 forests distributed throughout Europe and the USA, and generalised mixed models, we found that forest-level net ecosystem production and gross primary production have increased by 1% annually from 1995 to 2011. Statistical models indicated that increasing atmospheric CO2 was the most important factor driving the increasing strength of carbon sinks in these forests. We also found that the reduction of sulphur deposition in Europe and the USA lead to higher recovery in ecosystem respiration than in gross primary production, thus limiting the increase of carbon sequestration. By contrast, trends in climate and nitrogen deposition did not significantly contribute to changing carbon fluxes during the studied period. Our findings support the hypothesis of a general CO2-fertilization effect on vegetation growth and suggest that, so far unknown, sulphur deposition plays a significant role in the carbon balance of forests in industrialized regions. Our results show the need to include the effects of changing atmospheric composition, beyond CO2, to assess future dynamics of carbon-climate feedbacks not currently considered in earth system/climate modelling.
VersionFinal published version
SponsorsEuropean Research Council Synergy grant [ERC-2013-SyG 610028-IMBALANCE-P]; Spanish Government grant [CGL2013-48074-P]; Catalan Government projects [SGR 2014-274, FI-2013]; Scientific Research - Flanders; Juan de la Cierva fellowship from the Spanish Ministry of Science and Innovation; GHG-Europe project; Australian Climate Change Science Programme
- Future carbon balance of China's forests under climate change and increasing CO2.
- Authors: Ju WM, Chen JM, Harvey D, Wang S
- Issue date: 2007 Nov
- Vegetation feedbacks of nutrient addition lead to a weaker carbon sink in an ombrotrophic bog.
- Authors: Larmola T, Bubier JL, Kobyljanec C, Basiliko N, Juutinen S, Humphreys E, Preston M, Moore TR
- Issue date: 2013 Dec
- Climate change, allergy and asthma, and the role of tropical forests.
- Authors: D'Amato G, Vitale C, Rosario N, Neto HJC, Chong-Silva DC, Mendonça F, Perini J, Landgraf L, Solé D, Sánchez-Borges M, Ansotegui I, D'Amato M
- Issue date: 2017
- Increased understanding of nutrient immobilization in soil organic matter is critical for predicting the carbon sink strength of forest ecosystems over the next 100 years.
- Authors: McMurtrie RE, Medlyn BE, Dewar RC
- Issue date: 2001 Aug
- The role of driving factors in historical and projected carbon dynamics of upland ecosystems in Alaska.
- Authors: Genet H, He Y, Lyu Z, McGuire AD, Zhuang Q, Clein J, D'Amore D, Bennett A, Breen A, Biles F, Euskirchen ES, Johnson K, Kurkowski T, Kushch Schroder S, Pastick N, Rupp TS, Wylie B, Zhang Y, Zhou X, Zhu Z
- Issue date: 2018 Jan