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DOI	10.1007/s10533-021-00766-y
	Mg isotope composition in beech forest ecosystems and variations induced by liming: insights from four experimental sites in Northern France
	Court M.; van der Heijden G.; Louvat P.; Bolou-Bi E.; Caro G.; Bouchez J.; Pollier B.; Didier S.; Nys C.; Saint-André L.; Legout A.
发表日期	2021
ISSN	1682563
起始页码	115
结束页码	134
卷号	153 期号:2
英文摘要	Many forest soils are acidic and have very low plant-available pools of magnesium. Past and present sylvicultural, nutritional and/or climatic pressures endured by forest ecosystems can result in net losses of nutrients and ecosystem function losses. Liming with a carbonate product is an alternative to counteract these degradations but the effects of liming on the biogeochemical cycling of nutrients over time and the dynamics of Mg released from liming products are still unclear. We studied the Mg isotopes composition in four paired-treatment experimental beech forest ecosystems in northern France. At the sites where dolomitic lime was applied, the variation in exchangeable and foliar δ26Mg demonstrated the direct contribution of dolomite-derived Mg to the replenishment of topsoil exchangeable pools and to tree nutrition improvement: dolomite-derived Mg was incorporated into the biological cycling which allows its retention on the mid to long term in the soil–plant system. At the sites limed with calcium carbonate, the changes in exchangeable and foliar Mg contents and δ26Mg observed on the long term suggest that the applied product contained a small amount of Mg and/or that Mg cycling changed after liming, to cope in particular with the low Mg availability. Lastly, our results highlight the high δ26Mg of the organic layer (humus): fractionation processes occurring within this layer (mineralization/ageing of organic matter, preferential retention of 26 Mg) could explain these singular signatures that could greatly influence the topsoil Mg exchangeable pools. © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
英文关键词	Biogeochemical cycling; Calcium carbonate; Dolomite lime; Forest ecosystem; Liming; Mg isotopes
语种	英语
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/184611
作者单位	INRAE, BEF, Nancy, 54000, France; Institut de Physique du Globe de Paris, Equipe Géochimie Des Enveloppes Externes (CNRS – UMR 7154), 1 Rue Jussieu, Paris, 75005, France; Université Felix-Houphouët Boigny d’Abidjan-Cocody, UFR Des Sciences de La Terre Et Des Ressources Minières, BPV 34, Abidjan, Cote d'Ivoire; Centre de Recherches Pétrographiques et Géochimiques (CNRS – UPR 2300), 15 Rue Notre Dame des Pauvres, Vandoeuvre-les-Nancy, 54501, France
推荐引用方式 GB/T 7714	Court M.,van der Heijden G.,Louvat P.,et al. Mg isotope composition in beech forest ecosystems and variations induced by liming: insights from four experimental sites in Northern France[J],2021,153(2).
APA	Court M..,van der Heijden G..,Louvat P..,Bolou-Bi E..,Caro G..,...&Legout A..(2021).Mg isotope composition in beech forest ecosystems and variations induced by liming: insights from four experimental sites in Northern France.Biogeochemistry,153(2).
MLA	Court M.,et al."Mg isotope composition in beech forest ecosystems and variations induced by liming: insights from four experimental sites in Northern France".Biogeochemistry 153.2(2021).