How has soil carbon stock changed over recent decades?

Leiyi Chen, Pete Smith, Yuanhe Yang

Research output: Contribution to journalLetter

16 Citations (Scopus)

Abstract

Soil is the largest stock of carbon (C) in the terrestrial biosphere, so even slight changes in soil C stock may induce significant fluctuations in the atmospheric C dioxide (CO2) concentration. Early coupled C-climate models predicted that positive C-climate feedback would be triggered due to the acceleration of C release to the atmosphere under future climate warming (Cox et al., 2000). However, due to the omission of key microbial components and biogeochemical mechanisms in these models (Wieder et al., 2013), these predictions remain controversial, because soil C dynamics is still highly uncertain among results simulated by 11 Earth system models (ESMs) involved in CMIP5 (Ciais et al., 2013). Likewise, experimental evidence is also contradictory, revealing increasing, decreasing, or nonsignificant changes among individual experiments (Lu et al., 2013). Given the very mixed results from both modelling and experimental studies, we present a global synthesis of soil C changes to evaluate a central tendency.
Original languageEnglish
Pages (from-to)3197-3199
Number of pages3
JournalGlobal Change Biology
Volume21
Issue number9
Early online date4 Jul 2015
DOIs
Publication statusPublished - Sep 2015

Fingerprint

soil carbon
Carbon
Soils
soil
Climate models
climate feedback
biosphere
climate modeling
experimental study
warming
Earth (planet)
Feedback
atmosphere
carbon
climate
prediction
modeling
experiment
Experiments

Keywords

  • Soil Carbon Stock
  • Forests
  • Grasslands
  • Croplands
  • Forest management
  • land management
  • Sampling interval

Cite this

How has soil carbon stock changed over recent decades? / Chen, Leiyi; Smith, Pete; Yang, Yuanhe.

In: Global Change Biology, Vol. 21, No. 9, 09.2015, p. 3197-3199.

Research output: Contribution to journalLetter

Chen, Leiyi ; Smith, Pete ; Yang, Yuanhe. / How has soil carbon stock changed over recent decades?. In: Global Change Biology. 2015 ; Vol. 21, No. 9. pp. 3197-3199.
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AU - Yang, Yuanhe

N1 - Acknowledgements This work was supported by the National Basic Research Program of China on Global Change (2014CB954001 and 2015CB954201), National Natural Science Foundation of China (31322011, 31400364 and 41371213), and the Thousand Young Talents Program.

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AB - Soil is the largest stock of carbon (C) in the terrestrial biosphere, so even slight changes in soil C stock may induce significant fluctuations in the atmospheric C dioxide (CO2) concentration. Early coupled C-climate models predicted that positive C-climate feedback would be triggered due to the acceleration of C release to the atmosphere under future climate warming (Cox et al., 2000). However, due to the omission of key microbial components and biogeochemical mechanisms in these models (Wieder et al., 2013), these predictions remain controversial, because soil C dynamics is still highly uncertain among results simulated by 11 Earth system models (ESMs) involved in CMIP5 (Ciais et al., 2013). Likewise, experimental evidence is also contradictory, revealing increasing, decreasing, or nonsignificant changes among individual experiments (Lu et al., 2013). Given the very mixed results from both modelling and experimental studies, we present a global synthesis of soil C changes to evaluate a central tendency.

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