DOI: 10.1016/j.atmosenv.2015.06.018
Scopus记录号: 2-s2.0-84936760702
论文题名: Net global warming potential and greenhouse gas intensity from the double rice system with integrated soil-crop system management: Athree-year field study
作者: Liu Y ; , Zhou Z ; , Zhang X ; , Xu X ; , Chen H ; , Xiong Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 116 起始页码: 92
结束页码: 101
语种: 英语
英文关键词: Global warming potential (GWP)
; Greenhouse gas intensity (GHGI)
; Integrated soil-crop system management (ISSM)
; Methane (CH4 )
; Nitrous oxide (N2 O)
; Soil carbon sequestration
Scopus关键词: Carbon
; Crops
; Fertilizers
; Food supply
; Global warming
; Greenhouse gases
; Methane
; Mobile security
; Nitrogen
; Nitrogen fertilizers
; Nitrogen oxides
; Organic carbon
; Soils
; Farming practices
; Field measurement
; Global warming potential
; Hunan province , China
; Nitrous oxide
; Soil carbon sequestration
; Soil organic carbon sequestration
; System management
; Grain (agricultural product)
; methane
; nitrogen
; nitrogen fertilizer
; nitrous oxide
; organic carbon
; agricultural management
; alternative agriculture
; carbon sequestration
; crop yield
; fertilizer application
; field method
; food security
; global warming
; greenhouse gas
; integrated approach
; methane
; nitrogen
; nitrous oxide
; nutrient use efficiency
; soil carbon
; soil management
; spatiotemporal analysis
; air temperature
; Article
; China
; circannual rhythm
; controlled study
; cropping system
; farming system
; food security
; grain yield
; greenhouse effect
; greenhouse gas
; growing season
; nutrient management
; nutrient supply
; precipitation
; priority journal
; rice
; seasonal variation
; soil crop system management
; soil quality
; China
; Hunan
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The impact of integrated soil-crop system management (ISSM) on net global warming potential (GWP) and greenhouse gas intensity (GHGI) is poorly documented though crucial for food security and nitrogen fertilizer use efficiency (NUE). Using local farming practices (FP) and no nitrogen (NN) as the controls, three ISSM practices at different N rates were established in 2009 in a double rice system in Hunan Province, China. Soil organic carbon sequestration rates (SOCSR) were estimated by changes in SOC between 2009 and 2014. Field measurements of methane (CH4 ) and nitrous oxide (N2 O) fluxes, grain yield and NUE of early and late rice were measured from April 2011 through April 2014. The net GWP of the annual CH4 and N2 O emissions and SOCSR and the GHGI over the three years in the FP was 15.35t CO2 eqha-1 year-1 and 1.00kg CO2 eqkg-1 grain. The ISSM (N2) treatment increased annual rice yield by 23%, NUE by 76% and SOCSR by 129%, with similar sizes of net GWP and GHGI under the same N input relative to the FP. A second ISSM (N1) treatment in which annual fertilizer N input was decreased by 20% also showed the potential to lower net GWP and GHGI and increase SOCSR and significantly increased annual rice grain yield by 8.6% and NUE by 59%. The third ISSM (N3) in which fertilizer N input was 20% greater than in FP, significantly increased annual rice yield by 26%, NUE by 57% and SOCSR by 98% but notably increased the CH4 and N2 O emissions. Our findings show that the ISSM strategies are promising and feasible in sustainable rice agriculture for food security and GHGs mitigation. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81607
Appears in Collections: 气候变化事实与影响
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作者单位: Jiangsu Key Laboratory of Low Carbon Agriculture and GHG Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
Recommended Citation:
Liu Y,, Zhou Z,, Zhang X,et al. Net global warming potential and greenhouse gas intensity from the double rice system with integrated soil-crop system management: Athree-year field study[J]. Atmospheric Environment,2015-01-01,116