DOI: 10.1016/j.atmosenv.2014.06.061
Scopus记录号: 2-s2.0-84904125412
论文题名: Examining the transport of ammonia emissions across landscapes using nitrogen isotope ratios
作者: David Felix J ; , Elliott E ; M ; , Gish T ; , Maghirang R ; , Cambal L ; , Clougherty J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 95 起始页码: 563
结束页码: 570
语种: 英语
英文关键词: Ammonia
; Ammonium
; Emissions
; Isotope
; Nitrogen
Scopus关键词: Agriculture
; Ammonia
; Budget control
; Deposition
; Fertilizers
; Isotopes
; Particulate emissions
; Ammonium
; Concentrated animal feeding operations
; Concomitant reduction
; Fertilizer applications
; First-order approximations
; Nitrogen isotope ratio
; Source contributions
; Stable isotopic compositions
; Nitrogen
; ammonia
; nitrogen
; agricultural land
; ambient air
; ammonia
; isotopic ratio
; landscape change
; maize
; nitrogen isotope
; pollutant transport
; wet deposition
; agricultural land
; agricultural procedures
; ambient air
; article
; concentrated animal feeding operation
; cornfield
; fertilizer application
; isotope analysis
; land use
; landscape
; livestock
; pollution transport
; prairie
; priority journal
; urban area
; United States
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 proportion of reactive nitrogen in wet deposition attributable to ammonium (NH4+) has increased over the last three decades in the U.S. due to steadily increasing NH3 emissions and concomitant reductions in NOx emissions. The importance of examining NH3 emission sources and transport is amplified as the fraction of NH3 contributing to reactive nitrogen budget increases. Presented here is a study illustrating how the nitrogen stable isotopic composition of NH3 (δ15N-NH3) can be used to characterize the transport of NH3 emissions at the landscape-scale. To accomplish this, ambient NH3 was sampled across varying land use types (e.g. conventionally managed cornfield, tallgrass prairie, concentrated animal feeding operation (CAFO), dairy operation, urban setting) and analyzed for δ15N-NH3 values. Ambient δ15N-NH3 values at a conventionally managed cornfield were used in an isotope mixing model to make first order approximations of NH3 source contributions to ambient air over the cornfield. Results suggest that while volatilized fertilizer is a primary contributor to ambient NH3 after fertilizer application, during periods of low or no fertilization, vehicle NH3 emissions can be a substantial contributor to ambient NH3 over cornfields that are adjacent to roadways. These source approximations can aid in evaluating NH3 emission abatement techniques to local landscapes. Modeled NH3 deposition flux at a CAFO was found to contribute a considerable amount of nitrogen to the landscape and δ15N-NH3 values were used to trace the livestock source contributing to this flux. Ambient NH3 concentrations and δ15N-NH3 values were measured across an urban region and δ15N-NH3 values indicated primarily fossil fuel-based emissions and large spatial variations in NH3 concentrations. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81187
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Geology and Planetary Science, University of Pittsburgh, 4107 O'Hara Street, Pittsburgh, PA 15260, United States; USDA-ARS Hydrology and Remote Sensing Laboratory, Beltsville, MD 20705, United States; Biological and Agricultural Engineering Department, Kansas State University, Manhattan, KS 66506, United States; Department of Environmental and Occupational Health, University of Pittsburgh, 130 DeSoto Street, Pittsburgh, PA 15261, United States
Recommended Citation:
David Felix J,, Elliott E,M,et al. Examining the transport of ammonia emissions across landscapes using nitrogen isotope ratios[J]. Atmospheric Environment,2014-01-01,95