DOI: 10.1016/j.atmosenv.2016.11.020
Scopus记录号: 2-s2.0-85005974411
论文题名: Effect of tillage and water management on GHG emissions from Mediterranean rice growing ecosystems
作者: Fangueiro D ; , Becerra D ; , Albarrán Á ; , Peña D ; , Sanchez-Llerena J ; , Rato-Nunes J ; M ; , López-Piñeiro A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 150 起始页码: 303
结束页码: 312
语种: 英语
英文关键词: Flooding
; Methane
; Nitrous oxide
; No-tillage
; Soil quality
; Sprinkler irrigation
Scopus关键词: Agricultural machinery
; Agriculture
; Agronomy
; Cultivation
; Floods
; Global warming
; Irrigation
; Methane
; Nitrogen oxides
; Oil well flooding
; Sprinkler systems (irrigation)
; Water management
; Conventional tillage
; Efficient strategy
; Global warming potential
; Greenhouse gases (GHG)
; Nitrous oxide
; No tillage
; Soil quality
; Sprinkler irrigation
; Greenhouse gases
; carbon dioxide
; methane
; nitrous oxide
; organic matter
; agricultural ecosystem
; agricultural emission
; conservation tillage
; crop production
; flooding
; greenhouse gas
; irrigation system
; Mediterranean environment
; methane
; nitrous oxide
; paddy field
; rice
; soil quality
; water management
; zero tillage
; Article
; carbon footprint
; conventional tillage
; ecosystem
; flooding
; fluid intake
; greenhouse effect
; greenhouse gas
; intermethod comparison
; irrigation (agriculture)
; nitrous oxide emission
; no tillage
; priority journal
; rice
; soil management
; soil quality
; water management
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: Paddy rice fields are an important source of greenhouse gases (GHG), especially methane. In the present work, we assessed the impact on GHG emissions of two main parameters of rice production: aerobic rice production was compared with traditional flooded rice production and conventional tillage (CT) was compared with short-term and long-term no-tillage (NT) management. A field experiment was performed over three years and the GHG emissions were measured during each year. Five treatments (3 replicates) were considered: NTS7: no-tillage over seven years and sprinkler irrigation; NTS: no-tillage and sprinkler irrigation; CTS: conventional tillage and sprinkler irrigation; NTF: no-tillage and flooding; CTF: conventional tillage and flooding. The use of sprinkler irrigation rather than flooding led to decreases in nitrous oxide and methane emissions of ∼40% and more than 99%, respectively, over the 3-year experiment. The use of sprinkler irrigation compared with flooded irrigation reduced the global warming potential (GWP) about 40% and 36% in no-tillage and conventional tillage treatments, respectively. Treatment NTF decreased CH4 emissions, relative to CTF, by ∼60% over three years but the effect of NT on N2O emissions was not clear: a decrease or no effect was mostly observed in the NT treatments, relative to CT. A decrease of ∼40% in the total GHG emissions was observed in the NT treatments, relative to CT. No or small differences between NTS and NTS7 in terms of gaseous emissions were found. The short-term no-tillage and sprinkler irrigated treatment (NTS) gave lower yields than CTF in 2011 and 2012, but reached similar yields in the third year (NTS 8229 kg ha−1;CTF 8926 kg ha−1), with average savings of 75% of the total amount of water applied in CTF. The NTS7 data showed that high yields (reaching 9805 kg ha−1 in 2012) and water savings are sustainable in the long term. Considering the yield-scaled GWP of the emissions, NT gave a decrease of up to 42%, relative to CT. However, the effect of water management on yield-scaled GWP depended on the soil management: yield-scaled GWP was higher with flooding when NT was used and lower when tillage was used. It can be concluded that, for aerobic rice production, NT is an efficient strategy to minimize GHG emissions while maintaining high levels of production. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82258
Appears in Collections: 气候变化事实与影响
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作者单位: Universidade de Lisboa, Instituto Superior de Agronomia, LEAF, Tapada da Ajuda, Lisboa, Portugal; Área de Producción Vegetal (Escuela de Ingenierías Agrarias) and IACYS, Universidad de Extremadura, Ctra. de Cáceres, Badajoz, Spain; Área de Edafología y Química Agrícola (Facultad de Ciencias) and IACYS, Universidad de Extremadura, Avda de Elvas, Badajoz, Spain; Instituto Politécnico de Portalegre, Escola Superior Agrária de Elvas, Apartado 254, Elvas, Portugal
Recommended Citation:
Fangueiro D,, Becerra D,, Albarrán Á,et al. Effect of tillage and water management on GHG emissions from Mediterranean rice growing ecosystems[J]. Atmospheric Environment,2017-01-01,150