DOI: 10.1111/gcb.14069
Scopus记录号: 2-s2.0-85044120482
论文题名: Impact of priming on global soil carbon stocks
作者: Guenet B. ; Camino-Serrano M. ; Ciais P. ; Tifafi M. ; Maignan F. ; Soong J.L. ; Janssens I.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 5 起始页码: 1873
结束页码: 1883
语种: 英语
英文关键词: carbon cycle
; climate change
; land surface model
; priming
; RCP scenario
英文摘要: Fresh carbon input (above and belowground) contributes to soil carbon sequestration, but also accelerates decomposition of soil organic matter through biological priming mechanisms. Currently, poor understanding precludes the incorporation of these priming mechanisms into the global carbon models used for future projections. Here, we show that priming can be incorporated based on a simple equation calibrated from incubation and verified against independent litter manipulation experiments in the global land surface model, ORCHIDEE. When incorporated into ORCHIDEE, priming improved the model's representation of global soil carbon stocks and decreased soil carbon sequestration by 51% (12 ± 3 Pg C) during the period 1901–2010. Future projections with the same model across the range of CO2 and climate changes defined by the IPCC-RCP scenarios reveal that priming buffers the projected changes in soil carbon stocks — both the increases due to enhanced productivity and new input to the soil, and the decreases due to warming-induced accelerated decomposition. Including priming in Earth system models leads to different projections of soil carbon changes, which are challenging to verify at large spatial scales. © 2018 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110432
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; Department of Biology, Research Group of Plant and Vegetation Ecology, University of Antwerp, Wilrijk, Belgium
Recommended Citation:
Guenet B.,Camino-Serrano M.,Ciais P.,et al. Impact of priming on global soil carbon stocks[J]. Global Change Biology,2018-01-01,24(5)