globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1714597115
论文题名:
High fire-derived nitrogen deposition on central African forests
作者: 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.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2018
卷: 115, 期:3
起始页码: 549
结束页码: 554
语种: 英语
英文关键词: Biomass burning ; Central Africa ; Congo Basin ; FT-ICR-MS ; Nitrogen deposition
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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162305
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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, Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL 32306, United States, Pontchartrain Institute for Environmental Sciences, Department of Chemistry, University of New Orleans, New Orleans, LA 70148, United States; Boyemba, F., Plant Department, Faculty of Science, Université de Kisangani, Kisangani, Congo; Makelele, I., Plant Department, Faculty of Science, Université de Kisangani, Kisangani, Congo; Ntaboba, L.C., Faculty of Agronomy, Université Catholique de Bukavu, Bukavu, BP 285, Congo; Spencer, R.G.M., National High Magnetic Field Laboratory Geochemistry Group, Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL 32306, United States; Boeckx, P., Isotope Bioscience Laboratory-ISOFYS, Ghent University, Gent, 9000, Belgium

Recommended Citation:
Bauters M.,Drake T.W.,Verbeeck H.,et al. High fire-derived nitrogen deposition on central African forests[J]. Proceedings of the National Academy of Sciences of the United States of America,2018-01-01,115(3)
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