DOI: 10.1007/s10533-016-0225-5
Scopus记录号: 2-s2.0-84976875046
论文题名: Unprecedented decrease in deposition of nitrogen oxides over North America: the relative effects of emission controls and prevailing air-mass trajectories
作者: Lloret J. ; Valiela I.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 129, 期: 2018-01-02 起始页码: 165
结束页码: 180
语种: 英语
英文关键词: Emission controls
; Nitrogen deposition
; Nitrogen oxides
; North America
; Trend analysis
Scopus关键词: air mass
; anthropogenic source
; atmospheric deposition
; atmospheric pollution
; emission control
; geographical region
; nitrogen
; nitrogen cycle
; nitrogen oxides
; trajectory
; trend analysis
; North America
英文摘要: As one of the main forms of reactive nitrogen delivered by anthropogenic sources, atmospheric emissions of nitrogen oxides and their subsequent deposition has significantly perturbed the natural nitrogen cycle in sensitive receiving ecosystems worldwide. In North America, despite of decades of increasingly stringent regulations of emissions, decreases in the deposition of nitrogen oxides were not observed until the turn of the century. Analysis of available deposition data and trends at various spatial scales revealed that the decrease took place at a continental scale, but is particularly evident in the eastern side of the continent, where there was an unprecedented 50 % decrease in deposition. The magnitude, timing and geographical extension of the observed changes in deposition resulted from a combination of successfully and relatively coordinated application of emission controls in major contributing regions and increasingly lower amounts of nitrogen oxides being transported from source to receptor areas, thereby extending the effects of emission controls over large geographical scales. © 2016, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83380
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA, United States
Recommended Citation:
Lloret J.,Valiela I.. Unprecedented decrease in deposition of nitrogen oxides over North America: the relative effects of emission controls and prevailing air-mass trajectories[J]. Biogeochemistry,2016-01-01,129(2018-01-02)