DOI: 10.1111/gcb.13871
Scopus记录号: 2-s2.0-85030118031
论文题名: Offsetting global warming-induced elevated greenhouse gas emissions from an arable soil by biochar application
作者: Bamminger C. ; Poll C. ; Marhan S.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 1 起始页码: e318
结束页码: e334
语种: 英语
英文关键词: agroecosystem
; biochar
; carbon dioxide
; carbon sequestration
; methane
; nitrous oxide
; soil warming
; temperature sensitivity
Scopus关键词: agricultural ecosystem
; arable land
; biochar
; carbon dioxide
; carbon emission
; carbon sequestration
; global warming
; greenhouse gas
; methane
; nitrous oxide
; soil respiration
; Miscanthus
英文摘要: Global warming will likely enhance greenhouse gas (GHG) emissions from soils. Due to its slow decomposability, biochar is widely recognized as effective in long-term soil carbon (C) sequestration and in mitigation of soil GHG emissions. In a long-term soil warming experiment (+2.5 °C, since July 2008) we studied the effect of applying high-temperature Miscanthus biochar (0, 30 t/ha, since August 2013) on GHG emissions and their global warming potential (GWP) during 2 years in a temperate agroecosystem. Crop growth, physical and chemical soil properties, temperature sensitivity of soil respiration (Rs), and metabolic quotient (qCO2) were investigated to yield further information about single effects of soil warming and biochar as well as on their interactions. Soil warming increased total CO2 emissions by 28% over 2 years. The effect of warming on soil respiration did not level off as has often been observed in less intensively managed ecosystems. However, the temperature sensitivity of soil respiration was not affected by warming. Overall, biochar had no effect on most of the measured parameters, suggesting its high degradation stability and its low influence on microbial C cycling even under elevated soil temperatures. In contrast, biochar × warming interactions led to higher total N2O emissions, possibly due to accelerated N-cycling at elevated soil temperature and to biochar-induced changes in soil properties and environmental conditions. Methane uptake was not affected by soil warming or biochar. The incorporation of biochar-C into soil was estimated to offset warming-induced elevated GHG emissions for 25 years. Our results highlight the suitability of biochar for C sequestration in cultivated temperate agricultural soil under a future elevated temperature. However, the increased N2O emissions under warming limit the GHG mitigation potential of biochar. © 2017 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110593
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: Institute of Soil Science and Land Evaluation, Soil Biology Section, University of Hohenheim, Stuttgart, Germany; Institute of Bio- and Geosciences, Agrosphere IBG-3, Forschungszentrum Jülich GmbH, Jülich, Germany
Recommended Citation:
Bamminger C.,Poll C.,Marhan S.. Offsetting global warming-induced elevated greenhouse gas emissions from an arable soil by biochar application[J]. Global Change Biology,2018-01-01,24(1)