DOI: 10.1016/j.atmosenv.2017.12.008
Scopus记录号: 2-s2.0-85037972078
论文题名: Annual methane and nitrous oxide emissions from rice paddies and inland fish aquaculture wetlands in southeast China
作者: Wu S ; , Hu Z ; , Hu T ; , Chen J ; , Yu K ; , Zou J ; , Liu S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 175 起始页码: 135
结束页码: 144
语种: 英语
英文关键词: Aquaculture
; Indirect emission
; Land-use change
; Methane
; Nitrous oxide
Scopus关键词: Atmospheric chemistry
; Biochemical oxygen demand
; Budget control
; Carbon
; Dissolved oxygen
; Economic and social effects
; Economics
; Fish
; Global warming
; Land use
; Methane
; Nitrogen oxides
; Organic carbon
; Wetlands
; Atmospheric methanes
; Dissolved organic carbon
; Dissolved oxygen concentrations
; Global warming potential
; Land-use change
; Nitrous oxide
; Nitrous oxide emissions
; Water temperatures
; Aquaculture
; dissolved oxygen
; methane
; mineral water
; nitrous oxide
; organic carbon
; aquaculture production
; aquaculture system
; climate effect
; concentration (composition)
; dissolved organic carbon
; dissolved oxygen
; fish culture
; flux measurement
; habitat type
; land use change
; methane
; nitrous oxide
; paddy field
; pond
; water temperature
; wetland
; air pollution
; aquaculture
; Article
; China
; field experiment
; land use
; methane emission
; nitrous oxide emission
; physical chemistry
; priority journal
; rice
; sediment
; soil property
; water temperature
; wetland
; China
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: Inland aquaculture ponds have been documented as important sources of atmospheric methane (CH4) and nitrous oxide (N2O), while their regional or global source strength remains unclear due to lack of direct flux measurements by covering more typical habitat-specific aquaculture environments. In this study, we compared the CH4 and N2O fluxes from rice paddies and nearby inland fish aquaculture wetlands that were converted from rice paddies in southeast China. Both CH4 and N2O fluxes were positively related to water temperature and sediment dissolved organic carbon, but negatively related to water dissolved oxygen concentration. More robust response of N2O fluxes to water mineral N was observed than to sediment mineral N. Annual CH4 and N2O fluxes from inland fish aquaculture averaged 0.51 mg m−2 h−1 and 54.78 μg m−2 h−1, amounting to 42.31 kg CH4 ha−1 and 2.99 kg N2O-N ha−1, respectively. The conversion of rice paddies to conventional fish aquaculture significantly reduced CH4 and N2O emissions by 23% and 66%, respectively. The emission factor for N2O was estimated to be 0.46% of total N input in the feed or 1.23 g N2O-N kg−1 aquaculture production. The estimate of sustained-flux global warming potential of annual CH4 and N2O emissions and the net economic profit suggested that such conversion of rice paddies to inland fish aquaculture would help to reconcile the dilemma for simultaneously achieving both low climatic impacts and high economic benefits in China. More solid direct field measurements from inland aquaculture are in urgent need to direct the overall budget of national or global CH4 and N2O fluxes. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83079
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 GHGs Mitigation, Nanjing Agricultural University, Nanjing, China; Jiangsu Key Lab and Engineering Center for Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, China; College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, China
Recommended Citation:
Wu S,, Hu Z,, Hu T,et al. Annual methane and nitrous oxide emissions from rice paddies and inland fish aquaculture wetlands in southeast China[J]. Atmospheric Environment,2018-01-01,175