气候变化领域集成服务门户(CCPortal): Exchanges of major elements in a deciduous forest canopy

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DOI	10.1007/s10533-020-00732-0
	Exchanges of major elements in a deciduous forest canopy
	Turpault M.-P.; Kirchen G.; Calvaruso C.; Redon P.-O.; Dincher M.
发表日期	2021
ISSN	1682563
起始页码	51
结束页码	71
卷号	152 期号:1
英文摘要	Forest canopy is a complex interface between the atmosphere, the biosphere and the lithosphere, exerting a strong influence on forest durability through element recycling. Leaves are filters of the low atmosphere and can capture dry deposition (DD). Trees have developed strategies, such as resorption (R) during senescence, for nutrient conservation. These strategies seem to depend on the soil type. The chemical composition evolution of leaves is conceptualized as a function of four fluxes: foliar absorption (FA) foliar leaching, (FL), accretion (A), and resorption (R). The objective of this study is to evaluate these five fluxes, i.e., DD, FA, FL, A, and R for different elements (N, P, K, S, Ca, Mg, Mn, and Si) at the experimental forest site in Montiers which includes three plots with contrasting soils and similar climate and stand characteristics. The percentage of resorption was 63% for N, 37% for S, 35% for K and 23% for P, regardless of the soil type. Resorption represents the most efficient recycling mechanism for ecosystems. Accretion during senescence occurs in two elements that are also found as biominerals in leaves: Ca (13–26 kg.ha−1.y−1) and Si (3–6 kg.ha−1.y−1). The effect of soil is limited to leaf concentrations and exchanges, and only for three elements (Mn, Ca and Si) that are not growth-limiting elements in our study site. This study shows that, except for N, taking into account the exchanges between living foliar tissues and leaching solutions is fundamental to accurately estimate the resorption rate. © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG part of Springer Nature.
英文关键词	Accretion; Beech forest; Canopy; Dry deposition; Foliar absorption; Foliar leaching; Resorption; Soil type
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/184660
作者单位	UR 1138, INRAE “Biogéochimie des Ecosystèmes Forestiers”, Centre INRAE de Nancy, Champenoux, 54280, France; EcoSustain, Environmental Engineering Office, R&D, Kanfen, 57330, France; Andra, R&D Division, Centre de Meuse/Haute-Marne, Bure, 55290, France
推荐引用方式 GB/T 7714	Turpault M.-P.,Kirchen G.,Calvaruso C.,et al. Exchanges of major elements in a deciduous forest canopy[J],2021,152(1).
APA	Turpault M.-P.,Kirchen G.,Calvaruso C.,Redon P.-O.,&Dincher M..(2021).Exchanges of major elements in a deciduous forest canopy.Biogeochemistry,152(1).
MLA	Turpault M.-P.,et al."Exchanges of major elements in a deciduous forest canopy".Biogeochemistry 152.1(2021).