Arid
DOI10.1016/j.atmosenv.2013.07.075
Aeolian dust deposition rates in Northern French forests and inputs to their biogeochemical cycles
Lequy, Emeline1,2; Legout, Arnaud1; Conil, Sebastien2; Turpault, Marie-Pierre1
通讯作者Turpault, Marie-Pierre
来源期刊ATMOSPHERIC ENVIRONMENT
ISSN1352-2310
EISSN1873-2844
出版年2013
卷号80页码:281-289
英文摘要

This study describes the Aeolian dust deposition (ADD) in 4 sites of Northern France. Between December 2009 and March 2012, we sampled (i) Aeolian dust every four weeks, and (ii) 6 episodes of forecasted high atmospheric dust load mainly from the Saharan desert, the largest source of Aeolian dust in the world. These samples were treated with oxygen peroxide to remove organic matter so as to only compare the mineral fraction of the samples in the 4 sampling sites and to analyze their mineralogy. The solid samples contained the hardly soluble part of Aeolian dust (H-ADD). Its deposition was of 1.9 +/- 0.3 g m(-2) year(-1) with a seasonal pattern of high deposition from spring to early autumn and a low deposition in winter. H-ADD deposition during the forecasted episodes of high atmospheric load did not systematically exceed the deposition rate during the rest of the sampling period. This indicates that such episodes little contributed to the annual H-ADD rate. The mineralogy revealed a heterogeneous set of minerals dominated by silicates with a common basis of major types (quartz, feldspars, mica, chlorite, kaolinite and interlayered clay minerals in every sample) with randomly trace minerals (Fe-oxides, sulfates, amphibole, talc, gibbsite and carbonates). The chemistry of H-ADD led to a dominant input of Si (up to 4.4 kg ha(-1) year(-1)), while the nutrients inputs of Ca, K, Mg and P from ADD and the atmospheric organics (APD) in openfield were together of 1.5 +/- 0.5 kg ha(-1) year(-1) with a high contribution of soluble minerals and organic matter of ca. 40% for Mg and K, and of ca. 80% for Ca and P. Nutrient inputs from APD are especially an interesting source of P for forests developed on acidic soils. (C) 2013 Elsevier Ltd. All rights reserved.


英文关键词Atmospheric deposition Aeolian dust mineralogy Elemental composition Nutrient budgets
类型Article
语种英语
国家France
收录类别SCI-E
WOS记录号WOS:000328094800030
WOS关键词SAHARAN DUST ; NORTHEASTERN SPAIN ; CHEMICAL-COMPOSITION ; DESERT DUST ; RED RAINS ; CONSEQUENCES ; EPISODE ; IZANA
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/176017
作者单位1.INRA, Biogeoch Ecosyst Forestiers, F-54280 Champenoux, France;
2.ANDRA, Ctr Meuse Haute Marne, F-55290 Bure, France
推荐引用方式
GB/T 7714
Lequy, Emeline,Legout, Arnaud,Conil, Sebastien,et al. Aeolian dust deposition rates in Northern French forests and inputs to their biogeochemical cycles[J],2013,80:281-289.
APA Lequy, Emeline,Legout, Arnaud,Conil, Sebastien,&Turpault, Marie-Pierre.(2013).Aeolian dust deposition rates in Northern French forests and inputs to their biogeochemical cycles.ATMOSPHERIC ENVIRONMENT,80,281-289.
MLA Lequy, Emeline,et al."Aeolian dust deposition rates in Northern French forests and inputs to their biogeochemical cycles".ATMOSPHERIC ENVIRONMENT 80(2013):281-289.
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