DOI: 10.1007/s10533-015-0076-5
Scopus记录号: 2-s2.0-84925487651
论文题名: Nitrogen input into Sphagnum bogs via horizontal deposition: an estimate for N-polluted high-elevation sites
作者: Novak M. ; Veselovsky F. ; Curik J. ; Stepanova M. ; Fottova D. ; Prechova E. ; Myska O.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 123, 期: 2018-01-02 起始页码: 307
结束页码: 312
语种: 英语
英文关键词: Deposition
; Fog
; Mass balance
; Nitrogen
; Sphagnum
; Wetland
英文摘要: Elevated atmospheric deposition of reactive nitrogen species, mainly nitrate (NO3 −) and ammonium (NH4 +), may negatively affect peatland carbon balance and thus contribute to climatic warming. It is difficult to take an accurate inventory of atmospheric N inputs into Sphagnum-dominated bogs, due to uncertainties in estimating horizontal deposition. At two mountain-top peat bogs (Czech Republic, Central Europe), we modelled N interception by replacing S. cuspidatum capitula with polyethylene (PE) strands of an identical surface area. After a 12-week exposure of the samplers to frequent spring and autumn fogs, we compared the amount of N captured by the PE strands (nitrate, ammonium, and organic N) with vertical N deposition via rainfall. Horizontal deposition added 35–69 % N to rainfall N input. The more polluted site exhibited a significantly higher horizontal N deposition than the less polluted site. We scaled our S. cuspidatum data to S. capillifolium, a species common in boreal regions in the form of densely packed carpets. Assuming a proportional decrease in N interception with decreasing Sphagnum surface, we estimated that horizontal deposition in S. capillifolium would add 12–45 % N to rainfall N input. Our data will help to close the N mass balance in peat bogs studies. © 2015, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83533
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: Czech Geological Survey, Geologicka 6, Prague 5, Czech Republic
Recommended Citation:
Novak M.,Veselovsky F.,Curik J.,et al. Nitrogen input into Sphagnum bogs via horizontal deposition: an estimate for N-polluted high-elevation sites[J]. Biogeochemistry,2015-01-01,123(2018-01-02)