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DOI10.1073/pnas.1714597115
High fire-derived nitrogen deposition on central African forests
Bauters M.; Drake T.W.; Verbeeck H.; Bodé S.; Hervé-Fernández P.; Zito P.; Podgorski D.C.; Boyemba F.; Makelele I.; Ntaboba L.C.; Spencer R.G.M.; Boeckx P.
发表日期2018
ISSN0027-8424
起始页码549
结束页码554
卷号115期号:3
英文摘要Atmospheric nitrogen (N) deposition is an important determinant of N availability for natural ecosystems worldwide. Increased anthropogenic N deposition shifts the stoichiometric equilibrium of ecosystems, with direct and indirect impacts on ecosystem functioning and biogeochemical cycles. Current simulation data suggest that remote tropical forests still receive low atmospheric N deposition due to a lack of proximate industry, low rates of fossil fuel combustion, and absence of intensive agriculture. We present field-based N deposition data for forests of the central Congo Basin, and use ultrahigh-resolution mass spectrometry to characterize the organic N fraction. Additionally, we use satellite data and modeling for atmospheric N source apportionment. Our results indicate that these forests receive 18.2 kg N hectare-1 years-1 as wet deposition, with dry deposition via canopy interception adding considerably to this flux. We also show that roughly half of the N deposition is organic, which is often ignored in N deposition measurements and simulations. The source of atmospheric N is predominantly derived from intensive seasonal burning of biomass on the continent. This high N deposition has important implications for the ecology of the Congo Basin and for global biogeochemical cycles more broadly. © 2018 National Academy of Sciences.
英文关键词Biomass burning; Central Africa; Congo Basin; FT-ICR-MS; Nitrogen deposition
语种英语
scopus关键词Article; biogeochemical cycle; canopy thinning; Central Africa; combustion; Congo; controlled study; environmental impact; forest fire; leaching; mass spectrometry; nitrogen deposition; priority journal; seasonal variation; forest; growth, development and aging; metabolism; tree; air; nitrogen; Air; Congo; Forests; Mass Spectrometry; Nitrogen; Trees
来源期刊Proceedings of the National Academy of Sciences of the United States of America
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/159054
作者单位Bauters, M., Isotope Bioscience Laboratory-ISOFYS, Ghent University, Gent, 9000, Belgium, CAVElab, Computational and Applied Vegetation Ecology, Ghent University, Ghent, 9000, Belgium; Drake, T.W., National High Magnetic Field Laboratory Geochemistry Group, Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL 32306, United States; Verbeeck, H., CAVElab, Computational and Applied Vegetation Ecology, Ghent University, Ghent, 9000, Belgium; Bodé, S., Isotope Bioscience Laboratory-ISOFYS, Ghent University, Gent, 9000, Belgium; Hervé-Fernández, P., Isotope Bioscience Laboratory-ISOFYS, Ghent University, Gent, 9000, Belgium, Laboratory of Hydrology and Water Management, Ghent University, Gent, 9000, Belgium; Zito, P., National High Magnetic Field Laboratory Geochemistry Group, Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL 32306, United States; Podgorski, D.C., National High Magnetic Field Laboratory Geochemistry Group, De...
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GB/T 7714
Bauters M.,Drake T.W.,Verbeeck H.,et al. High fire-derived nitrogen deposition on central African forests[J],2018,115(3).
APA Bauters M..,Drake T.W..,Verbeeck H..,Bodé S..,Hervé-Fernández P..,...&Boeckx P..(2018).High fire-derived nitrogen deposition on central African forests.Proceedings of the National Academy of Sciences of the United States of America,115(3).
MLA Bauters M.,et al."High fire-derived nitrogen deposition on central African forests".Proceedings of the National Academy of Sciences of the United States of America 115.3(2018).
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