DOI: 10.1007/s10533-016-0216-6
Scopus记录号: 2-s2.0-84969219443
论文题名: Effects of altered atmospheric nutrient deposition from Alberta oil sands development on Sphagnum fuscum growth and C, N and S accumulation in peat
作者: Wieder R.K. ; Vile M.A. ; Albright C.M. ; Scott K.D. ; Vitt D.H. ; Quinn J.C. ; Burke-Scoll M.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 129, 期: 2018-01-02 语种: 英语
英文关键词: Atmospheric deposition
; Bogs
; Nitrogen
; Oil sands
; Peatlands
; Sphagnum fuscum
; Sulfur
Scopus关键词: atmospheric deposition
; bioaccumulation
; biogeochemistry
; bog
; carbon
; growth rate
; industrial location
; moss
; nitrogen
; nitrogen oxides
; nutrient loss
; oil sand
; peatland
; sulfur
; sulfur emission
; Alberta
; Canada
; Sphagnum fuscum
英文摘要: Associated with the development of the oil sands resource in northern Alberta, Canada are elevated emissions of NOx and SOx from diesel-fueled vehicle and upgrader stack emissions. Ultimately these emissions are returned to regional terrestrial and aquatic ecosystems in the form of elevated atmospheric N and S deposition. About 30 % of the regional landscape is covered with peatlands, including ombrotrophic bogs that receive nutrient inputs solely from the atmosphere. From 2009 to 2014 we examined the effects of N and S deposition on Sphagnum fuscum growth and on recent net accumulation of C, N, and S in peat in six bogs, located between 11 and 251 km from the oil sands industrial center. Averaged across all sites and years, average deposition of NH4 +–N, NO3 −–N, DIN, SO4 2−–S, Ca2+, Mg2+, and ortho-P was 0.52, 0.64, 1.17, 7.70, 10.04, 3.29, and 0.15 kg ha−1 year−1. Deposition of NO3 −–N, DIN, SO4 2−–S, Ca2+, and Mg2+ decreased exponentially with distance from the industrial center. Averaged across all sites and years, vertical growth and NPP of S. fuscum was 16.6 ± 0.6 mm and 259 ± 9 g m−2 per growing season, increasing exponentially with proximity to the industrial center. Correlations suggested that climatic factors, and in particular late growing season precipitation and the growing season Aridity Index (potential evapotranspiration to precipitation ratio) may be more important than the chemistry of atmospheric deposition in affecting S. fuscum growth. Across all sites and years, net C, N, and S accumulation in peat over the most recent 25 years averaged 67, 1.29, and 0.30 g m−2 year−1 and increased with proximity to the industrial center. Over the past 25–50 years, net C, N, and S accumulation in peat was lower than in surface peat, with only net S accumulation exhibiting an increase with proximity to the industrial center. In a region where bogs have persisted on the landscape for millennia with low atmospheric deposition of elements, changing precipitation chemistry, and in particular elevated deposition of N, S, Ca and Mg, related to oil sands development is influencing bog function, as evidenced by S. fuscum growth and biogeochemical responses. © 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/83378
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: Department of Biology, Villanova University, Villanova, PA, United States; Department of Geography and the Environment, Villanova University, Villanova, PA, United States; Department of Plant Biology, Southern Illinois University, Carbondale, IL, United States
Recommended Citation:
Wieder R.K.,Vile M.A.,Albright C.M.,et al. Effects of altered atmospheric nutrient deposition from Alberta oil sands development on Sphagnum fuscum growth and C, N and S accumulation in peat[J]. Biogeochemistry,2016-01-01,129(2018-01-02)