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Historical and future perspectives of global soil carbon response to climate and land-use changes

Abstract

In this paper, we attempt to analyse the respective influences of land-use and climate changes on the global and regional balances of soil organic carbon (SOC) stocks. Two time periods are analysed: the historical period 1901-2000 and the period 2000-2100. The historical period is analysed using a synthesis of published data as well as new global and regional model simulations, and the future is analysed using models only. Historical land cover changes have resulted globally in SOC release into the atmosphere. This human induced SOC decrease was nearly balanced by the net SOC increase due to higher CO{sub 2} and rainfall. Mechanization of agriculture after the 1950s has accelerated SOC losses in croplands, whereas development of carbon-sequestering practices over the past decades may have limited SOC loss from arable soils. In some regions (Europe, China and USA), croplands are currently estimated to be either a small C sink or a small source, but not a large source of CO{sub 2} to the atmosphere. In the future, according to terrestrial biosphere and climate models projections, both climate and land cover changes might cause a net SOC loss, particularly in tropical regions. The timing, magnitude, and regional distribution of future SOC changes  More>>
Authors:
Eglin, T; Ciais, P. (Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA-CNRS-UVSQ, Gif-sur-Yvette (France)), e-mail: thomas.eglin@lsce.ipsl.fr; Piao, S L [1] 
  1. Departement of Ecology, College of Urban and Environmental Sciences, Peking Univ., Beijing (China); and others
Publication Date:
Nov 15, 2010
Product Type:
Journal Article
Resource Relation:
Journal Name: Tellus, Series B: Chemical and Physical Meteorology; Journal Volume: 62B; Journal Issue: 5; Conference: ICDC8: 8. international carbon dioxide conference, Jena (Germany), 09/13/2009--09/19/2009; Other Information: Conference Literature; 110 refs., 6 figs., 2 tabs.; 10.1111/J.1600-0889.2010.00499.X
Subject:
54 ENVIRONMENTAL SCIENCES; CARBON; LAND USE; CLIMATIC CHANGE; CARBON DIOXIDE; EARTH PLANET; REGIONAL ANALYSIS
OSTI ID:
1010795
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0280-6509; TRN: SE1107063
Availability:
Available from DOI: http://dx.doi.org/10.1111/j.1600-0889.2010.00499.x
Submitting Site:
SWD
Size:
page(s) 700-718
Announcement Date:
Apr 11, 2011

Citation Formats

Eglin, T, Ciais, P. (Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA-CNRS-UVSQ, Gif-sur-Yvette (France)), e-mail: thomas.eglin@lsce.ipsl.fr, and Piao, S L. Historical and future perspectives of global soil carbon response to climate and land-use changes. Sweden: N. p., 2010. Web. doi:10.1111/J.1600-0889.2010.00499.X.
Eglin, T, Ciais, P. (Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA-CNRS-UVSQ, Gif-sur-Yvette (France)), e-mail: thomas.eglin@lsce.ipsl.fr, & Piao, S L. Historical and future perspectives of global soil carbon response to climate and land-use changes. Sweden. doi:10.1111/J.1600-0889.2010.00499.X.
Eglin, T, Ciais, P. (Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA-CNRS-UVSQ, Gif-sur-Yvette (France)), e-mail: thomas.eglin@lsce.ipsl.fr, and Piao, S L. 2010. "Historical and future perspectives of global soil carbon response to climate and land-use changes." Sweden. doi:10.1111/J.1600-0889.2010.00499.X. https://www.osti.gov/servlets/purl/10.1111/J.1600-0889.2010.00499.X.
@misc{etde_1010795,
title = {Historical and future perspectives of global soil carbon response to climate and land-use changes}
author = {Eglin, T, Ciais, P. (Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA-CNRS-UVSQ, Gif-sur-Yvette (France)), e-mail: thomas.eglin@lsce.ipsl.fr, and Piao, S L}
abstractNote = {In this paper, we attempt to analyse the respective influences of land-use and climate changes on the global and regional balances of soil organic carbon (SOC) stocks. Two time periods are analysed: the historical period 1901-2000 and the period 2000-2100. The historical period is analysed using a synthesis of published data as well as new global and regional model simulations, and the future is analysed using models only. Historical land cover changes have resulted globally in SOC release into the atmosphere. This human induced SOC decrease was nearly balanced by the net SOC increase due to higher CO{sub 2} and rainfall. Mechanization of agriculture after the 1950s has accelerated SOC losses in croplands, whereas development of carbon-sequestering practices over the past decades may have limited SOC loss from arable soils. In some regions (Europe, China and USA), croplands are currently estimated to be either a small C sink or a small source, but not a large source of CO{sub 2} to the atmosphere. In the future, according to terrestrial biosphere and climate models projections, both climate and land cover changes might cause a net SOC loss, particularly in tropical regions. The timing, magnitude, and regional distribution of future SOC changes are all highly uncertain. Reducing this uncertainty requires improving future anthropogenic CO{sub 2} emissions and land-use scenarios and better understanding of biogeochemical processes that control SOC turnover, for both managed and un-managed ecosystems}
doi = {10.1111/J.1600-0889.2010.00499.X}
journal = {Tellus, Series B: Chemical and Physical Meteorology}
issue = {5}
volume = {62B}
place = {Sweden}
year = {2010}
month = {Nov}
}