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DOI	10.1007/s10533-020-00673-8
	Atmospheric deposition of elements and its relevance for nutrient budgets of tropical forests
	Van Langenhove L.; Verryckt L.T.; Bréchet L.; Courtois E.A.; Stahl C.; Hofhansl F.; Bauters M.; Sardans J.; Boeckx P.; Fransen E.; Peñuelas J.; Janssens I.A.
发表日期	2020
ISSN	0168-2563
起始页码	175
结束页码	193
卷号	149 期号:2
英文摘要	Atmospheric deposition is an important component of the nutrient cycles of terrestrial ecosystems, but field measurements are especially scarce in tropical regions. In this study we analysed 15 months of precipitation chemistry collected in an old growth tropical forest located in French Guiana. We measured nutrient inputs via bulk precipitation and throughfall and used the canopy budget model to estimate nutrient fluxes via canopy exchange and dry deposition. Based on this method we quantified net fluxes of macronutrients and compared their contribution to internal cycling rates via litterfall. Our results suggest that while atmospheric deposition of nitrogen was relatively high (13 kg ha−1 year−1), and mainly in organic forms, the N inputs via litterfall were an order of magnitude higher. In contrast to nitrogen, we found that atmospheric deposition of phosphorus (0.5 kg ha−1 year−1) supplied up to one third of the annual litterfall input to the forest floor. Most strikingly, combined annual inputs of potassium via atmospheric deposition (14 kg ha−1 year−1) and canopy leaching (22 kg ha−1 year−1) were three times larger than internal nutrient recycling via litterfall (11 kg ha−1 year−1). We conclude that atmospheric deposition of phosphorus and especially potassium may play an important role in sustaining the productivity of this old-growth tropical rainforest. © 2020, Springer Nature Switzerland AG.
英文关键词	Litterfall; Nitrogen; Nutrient cycling; Phosphorus; Potassium; Throughfall
语种	英语
scopus关键词	atmospheric deposition; canopy exchange; field method; forest floor; leaching; litterfall; nutrient cycling; phosphorus; potassium; precipitation (climatology); rainforest; tropical forest; French Guiana
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153142
作者单位	Centre of Excellence PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium; Laboratoire Ecologie, évolution, Interactions des Systèmes Amazoniens (LEEISA), Université de Guyane, CNRS, IFREMER, French Guiana, Cayenne, 97300, France; INRA, UMR EcoFoG, CNRS, Cirad, AgroParisTech, Université des Antilles, Université de Guyane, Kourou, 97387, France; International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg, 2361, Austria; Isotope Bioscience Laboratory–ISOFYS, Ghent University, Gent, 9000, Belgium; CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Catalonia 08193, Spain; CREAF, Cerdanyola del Vallès, Catalonia 08193, Spain; Center of Medical Genetics, University of Antwerp, Prins Boudewijnlaan 43/6, Edegem, Antwerp 2650, Belgium; StatUa Center for Statistics, University of Antwerp, Prinsstraat 13, Antwerp, 2000, Belgium
推荐引用方式 GB/T 7714	Van Langenhove L.,Verryckt L.T.,Bréchet L.,et al. Atmospheric deposition of elements and its relevance for nutrient budgets of tropical forests[J],2020,149(2).
APA	Van Langenhove L..,Verryckt L.T..,Bréchet L..,Courtois E.A..,Stahl C..,...&Janssens I.A..(2020).Atmospheric deposition of elements and its relevance for nutrient budgets of tropical forests.Biogeochemistry,149(2).
MLA	Van Langenhove L.,et al."Atmospheric deposition of elements and its relevance for nutrient budgets of tropical forests".Biogeochemistry 149.2(2020).