DOI: 10.1016/j.geoderma.2020.114230
论文题名: Crops for increasing soil organic carbon stocks – A global meta analysis
作者: Mathew I. ; Shimelis H. ; Mutema M. ; Minasny B. ; Chaplot V.
刊名: Geoderma
ISSN: 167061
出版年: 2020
卷: 367 语种: 英语
英文关键词: C assimilation
; C flux
; C labeling
; Carbon transfer
; Plant C
Scopus关键词: Climate change
; Crops
; Grain (agricultural product)
; Organic carbon
; Autotrophic respiration
; Carbon allocation
; Carbon transfer
; Climate change mitigation
; Controlling factors
; Long term stability
; Soil organic Carbon stocks
; Triticum aestivum
; Soils
; barley
; biomass
; carbon sequestration
; climate change
; concentration (composition)
; meta-analysis
; quantitative analysis
; soil fertility
; wheat
; Hordeum
; Hordeum vulgare
; Lolium
; Lolium perenne
; Oryza sativa
; Triticum aestivum
; Zea mays
英文摘要: Quantifying the ability of plants to store atmospheric inorganic carbon (C) in their biomass and ultimately in the soil as organic C for long duration is crucial for climate change mitigation and soil fertility improvement. While many independent studies have been performed on the transfer of atmospheric C to soils for single crop types, the objective of this study was to compare the ability of crops, which are most commonly found worldwide, to transfer C to soils, and the associated controlling factors. We performed a meta-analysis of 227 research trials, which had reported C fluxes from plant to soil for different crops. On average, crops assimilated 4.5 Mg C ha−1 yr−1 from the atmosphere with values between 1.7 Mg C ha−1 yr−1, for barley (Hordeum vulgare) and 5.2 Mg C ha−1 yr−1 for maize (Zea mays). Sixty-one percent (61%) of the assimilated C was allocated to shoots, 20% to roots, 7% to soils while 12% was respired back into the atmosphere as autotrophic respiration by plants. Maize and ryegrass (Lolium perenne) had the greatest allocation to the soil (1.0 Mg C ha−1 yr−1 or 19% total assimilation), followed by wheat (Triticum aestivum). 0.8 Mg C ha−1 yr−1, 23%) and rice (Oryza Sativa, 0.7 Mg C ha−1 yr−1, 20%). Carbon allocation to the soil positively correlated to C allocation to roots (r = 0.33, P < 0.05), while correlations between shoot and root biomass on the one hand and C allocation to shoots on the other hand were not significant. The question on the long-term stability of the C transferred to soils remains unanswered. © 2020 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158203
Appears in Collections: 气候变化与战略
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作者单位: University of KwaZulu-Natal, School of Agricultural, Earth and Environmental Sciences, Private Bag X01, Scottsville, Pietermaritzburg 3209, South Africa; Agricultural Research Council-Institute of Agricultural Engineering, Private Bag X529, Silverton, Pretoria, South Africa; Sydney Institute of Agriculture, School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW 2006, Australia; Laboratoire d'Océanographie et du Climat: Expérimentations et approches numériques (LOCEAN), UMR 7159, IRD/C NRS/UPMC/MNHN, IPSL, 4, place Jussieu, Paris, 75252, France
Recommended Citation:
Mathew I.,Shimelis H.,Mutema M.,et al. Crops for increasing soil organic carbon stocks – A global meta analysis[J]. Geoderma,2020-01-01,367