DOI: 10.1016/j.atmosenv.2014.11.052
Scopus记录号: 2-s2.0-84916602646
论文题名: Nonlinear response of nitric oxide emissions to a nitrogen application gradient: A case study during the wheat season in a Chinese rice-wheat rotation system
作者: Zhao M ; , Tian Y ; , Zhang M ; , Yao Y ; , Ao Y ; , Yin B ; , Zhu Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 102 起始页码: 200
结束页码: 208
语种: 英语
英文关键词: Crop yield
; Nitric oxide
; Nitrogen fertilizer
; Taihu lake region
; Wheat field
Scopus关键词: Crops
; Ecosystems
; Lakes
; Nitric oxide
; Nitrogen
; Nitrogen fertilizers
; Agricultural ecosystems
; Crop yield
; Field measurement
; Nitric oxide emissions
; Non-linear response
; Rice-wheat rotations
; Taihu lakes
; Wheat fields
; Soil pollution
; nitric oxide
; nitrogen fertilizer
; crop rotation
; crop yield
; fertilizer application
; nitric oxide
; nonlinearity
; rice
; wheat
; Article
; China
; crop rotation
; ecosystem
; fertilizer application
; grain yield
; growing season
; harvest
; nonhuman
; rice
; winter wheat
; China
; Taihu Lake
; Triticum aestivum
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 response of nitric oxide (NO) emissions to nitrogen (N) input in agricultural ecosystems is generally assumed to be linear, but the availability of inorganic soil N exceeding crop N demands may cause a threshold response of NO. We conducted a four-rotation field measurement with discrepant N fertilizer rates during the wheat season of the rice-wheat rotation in the Taihu Lake region in China to test the hypothesis. Across all years, a nonlinear model well characterized the response of cumulative NO emissions to N fertilizer rates. The direct emission factors of NO induced by fertilizer also increased nonlinearly with increasing N doses, with a mean of 1.06% (ranging from 0.54% to 1.49%). NO emissions were low (<1.81kgNha-1yr-1) over the 0-180kgNha-1 fertilizer additions; above these additions, the increasing N rates resulted in substantial NO increases ranging from 73% to 245% but only elevated crop yields by 6%. The results suggested defining the N rate of 180kgNha-1 as a promising level for achieving decreased NO emissions without greatly affecting the economic return from grain yield. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82024
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 Beijing East Road, Nanjing, China; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Zhao M,, Tian Y,, Zhang M,et al. Nonlinear response of nitric oxide emissions to a nitrogen application gradient: A case study during the wheat season in a Chinese rice-wheat rotation system[J]. Atmospheric Environment,2015-01-01,102