DOI: 10.1016/j.atmosenv.2014.04.009
Scopus记录号: 2-s2.0-84901036243
论文题名: Effects of organic nitrification inhibitors on methane and nitrous oxide emission from tropical rice paddy
作者: Datta A ; , Adhya T ; K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 92 起始页码: 533
结束页码: 545
语种: 英语
英文关键词: DCD
; Karanjin
; Methane
; Nimin
; Nitrous oxide
; Rice paddy
Scopus关键词: Denitrification
; Drought
; Global warming
; Methane
; Nitrification
; Nitrogen oxides
; Soils
; Urea
; DCD
; Karanjin
; Nimin
; Nitrous oxide
; Rice paddy
; Metabolism
; methane
; nitrous oxide
; urea
; bacterium
; denitrification
; emission
; inhibitor
; methane
; nitrification
; nitrous oxide
; oxidation
; paddy field
; soil emission
; article
; Azadirachta indica
; denitrification
; enzyme activity
; grain yield
; greenhouse effect
; harvest index
; methanotrophic bacterium
; nitrification
; nitrous oxide emission
; nonhuman
; oxidation reduction potential
; Pongamia pinnata
; priority journal
; rice
; season
; seedling
; soil
; tropic climate
; India
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: We have studied the effects of application of different nitrification inhibitors on methane (CH4) and nitrous oxide (N2O) emissions from rice paddy and associated soil chemical and biological dynamics during wet and dry seasons of rice crop in a tropical climate of eastern India. The experiment consisted of four treatments viz. (i) Prilled urea amended control (ii) urea+Dicyandiamide (DCD), (iii) urea+Nimin and (iv) urea+Karanjin. CH4 emission was significantly higher from the DCD (372.36kgha-1) and Karanjin (153.07kgha-1) applied plots during the wet and dry season, respectively. N2O emission was significantly inhibited in the Nimin applied plots during both seasons (69% and 85% over control during wet season and dry season respectively). CH4 and N2O emissions per Mg of rice grain yield were lowest from the Nimin applied plots during both seasons. Global warming potential (GWP) of the plot treated with DCD (13.93) was significantly higher during the experimental period. CH4 production potential was significantly higher from the nitrification inhibitor applied plots compared to control. While, CH4 oxidation potential followed the order; urea+Nimin>urea+Karanjin>urea+DCD>control. Application of Nimin significantly increased the methanotrophic bacterial population in the soil during the maximum tillering to flowering stage and may be attributed to low CH4 emission from the plots. Denitrification enzyme activity (DEA) of the soil was significantly low from the Nimin and Karanjin applied plots. Results suggest that apart from being potent nitrification inhibitors, Nimin and Karanjin also have the potential to reduce the denitrification activity in the soil. This in turn, would reduce N2O emission from flooded paddy where both nitrification and denitrification processes causes N2O emission. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81280
Appears in Collections: 气候变化事实与影响
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作者单位: Crop Production Division, Central Rice Research Institute, Cuttack, Odisha, India; Institute of Biological and Environmental Sciences, University of Aberdeen, United Kingdom; The Energy and Resources Institute, New Delhi, India; School of Biotechnology, KIIT University, Bhubaneswar 751024, Odisha, India
Recommended Citation:
Datta A,, Adhya T,K. Effects of organic nitrification inhibitors on methane and nitrous oxide emission from tropical rice paddy[J]. Atmospheric Environment,2014-01-01,92