Use of artificial trees to assess dry deposition in spruce stands

Dambrine, Étienne; Pollier, Benoı̂t; Bonneau, M.; Ignatova, N.

doi:10.1016/s1352-2310(97)00479-2

Cited by 21 publications

(15 citation statements)

References 16 publications

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“…The study site and sampling method are described in [5]. Briefly, the study site is located on the upper southern oriented slope of the Strengbach catchment [24].…”

Section: Methodsmentioning

confidence: 99%

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Canopy uptake of N deposition in spruce (Picea abies L. Karst) stands

Ignatova¹,

Dambrine²

2000

Ann. For. Sci.

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-In order to quantify the total deposition and canopy uptake of N in spruce, plastic Christmas trees were established next to real spruce trees of approximately similar height in clearings of the Strengbach catchment (Vosges mountains, France). Bulk precipitation and throughfall (TF) composition under the artificial trees, the real spruce trees, and in 3 spruce stands aged 15, 35 and 90 years were monitored during 8.5 months. Fluxes of inorganic N, SO 4 2-and Na + in throughfall below plastic trees were 50% (N) to 30% (Na + ) higher to those in bulk precipitation, whereas the flux of water was 30% lower. Net throughfall (NTF) fluxes of NH 4 + were higher below the plastic trees than below the real trees, whereas the reverse was true for NO 3 -. The ratio between total inorganic nitrogen and Na + (or SO 4 2-) in NTF was higher below plastic trees than below closed spruce stands. Assuming that foliar leaching of Na + (or SO 4 2-) was negligible, the ratios between Na + (or SO 4 2-) fluxes in net throughfall under living and plastic canopies were used as deposition indexes, and dry + occult deposition of N was computed for the real spruce trees in the clearings as well as in the 3 closed stands. Results confirmed a significant canopy uptake of dry + occult deposited N and especially NH 4 + by spruce stands. + (pluviolessivat moins pluie) sous les arbres artificiels était supérieur à celui sous les arbres réels, mais inférieur pour le NO 3 -. Le rapport N minéral/ or SO 4 2-(ou Na + ) dans le pluviolessivat net sous les arbres artificiels était supérieur à celui mesuré sous les peuplements fermés. En admettant qu'absorption et lessivage foliaire de Na + et SO 4 2-sont négligeables, nous avons utilisé le rapport entre le pluviolessivat net de Na + (ou or SO 4 2-) sous arbres (ou peuplements) réels et artificiels comme un index de dépôt occulte, et le rapport N minéral/ Na + (ou or SO 4 2-) dans le pluviolessivat net sous les arbres artificiels comme un caractéristique intrinsèque du dépôt occulte. Ceci nous a permis de calculer le dépôt occulte d'azote minéral et l'absorption foliaire dans les différents peuplements étudiés. Les résultats confirment une absorption foliaire d'azote, et plus particulièrement d'NH 4 + , très significative pour la nutrition des peuplements forestiers.dépôt sec / azote / pluviolessivat / secrétion / Picea abiès Ann. For. Sci. 57 (2000) 113-120 113

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“…The study site and sampling method are described in [5]. Briefly, the study site is located on the upper southern oriented slope of the Strengbach catchment [24].…”

Section: Methodsmentioning

confidence: 99%

“…The flux of N, as of most mineral elements, has generally increased from rain to throughfall and this increase has been related to stand age. This relation with stand age has been hypothetically linked to an increase in dry deposition with the canopy development of the stand [5].…”

Section: Introductionmentioning

confidence: 99%

Canopy uptake of N deposition in spruce (Picea abies L. Karst) stands

Ignatova¹,

Dambrine²

2000

Ann. For. Sci.

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“…Dissolved elements in rain waters can originate from three distinct sources: the ocean, the interaction of rain water with atmospheric dust (silicates and carbonates), and finally from vegetation exudates (in throughfall). This last source can affect fluxes of Ca and K for instance, but in contrast is not significant for Na (Cenki-Tok et al, 2009;Chabaux et al, 2005;Dambrine et al, 1998a;Schmitt and Stille, 2005). Because the Li/Na ratio in vegetation is clearly higher than that of the rain waters (Fig.…”

Section: Concentrationsmentioning

confidence: 97%

Lithium isotope systematics in a forested granitic catchment (Strengbach, Vosges Mountains, France)

Lemarchand

Chabaux

Vigier

et al. 2010

Geochimica et Cosmochimica Acta

153

108

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“…Moreover, the same test individual could be used in many controlled experiments, so that the data reflect a constant plant architecture, free from the effect of time‐related changes such as wilting. The use of artificial leaves, stems, and plants in such experimental work is well accepted (Merriam, ; Williamson, ; Leclerc et al ., ; Dambrine et al ., ; Stachurski and Zimka, ; Saint‐Jean et al ., ; Matorell and Ezcurra, ; Madi et al ., ) and forms a valuable tool for the kind of investigation undertaken here. The use of an artificial plant however brings with it the issue of the extent to which the results may apply to real plants.…”

Section: The Influence Of Rainfall Intensity On Stemflow Yieldmentioning

confidence: 99%

Stemflow production and intrastorm rainfall intensity variation: an experimental analysis using laboratory rainfall simulation

Dunkerley

2014

Earth Surf Processes Landf

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Laboratory rainfall simulation experiments using a small artificial olive tree are used to show that the fraction of rain falling at a constant intensity that becomes stemflow rises from 9% at 2.5 mm/h to 36.1% at 35 mm/h. Natural rainfall events commonly exhibit wide fluctuations of intensity. Simulated rainfall events each having a mean intensity of 10 mm/h, but containing short intensity peaks of 20 to 100 mm/h at varying intra-event positions, were used to explore the effect of varying intensity profiles. Results demonstrate that changes in rainfall event profile are associated with wide variation in stemflow flux, stemflow volume and stemflow fraction. When applied to an initially dry plant, rainfall events with a late intensity peak yielded an average peak stemflow flux up to 188% larger than events of contrasting profile, such as early peak events. The increase was smaller, up to 141%, when rain was applied to plants that were already partially wet, but was again found in events with a late intensity peak. Moreover, such events yielded a peak stemflow flux up to approximately seven times larger than comparable events of uniform intensity. Likewise, changing event profile with no change in rainfall depth was associated with a maximum stemflow fraction that was 31% larger than theminimum stemflow fraction, and a maximum stemflow volume that was nearly 37% larger than the minimum stemflow volume. These results suggest that rainfall event profile exerts a significant effect on all of the studied stemflow parameters. It is hypothesized that this is a consequence of the way in which intensity profile affects the rate of wetting-up of trickle pathways on the plant, and variation in the time taken for these pathways to become fully connected. Event profile must therefore be considered along with plant architecture in seeking to understand stemflow.

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Use of artificial trees to assess dry deposition in spruce stands

Cited by 21 publications

References 16 publications

Canopy uptake of N deposition in spruce (Picea abies L. Karst) stands

Canopy uptake of N deposition in spruce (Picea abies L. Karst) stands

Lithium isotope systematics in a forested granitic catchment (Strengbach, Vosges Mountains, France)

Stemflow production and intrastorm rainfall intensity variation: an experimental analysis using laboratory rainfall simulation

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