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DOI | 10.1073/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 |
ISSN | 0027-8424 |
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... |
推荐引用方式 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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