The Fate of 15N-Labelled Nitrogen Inputs to Coniferous and Broadleaf Forests

Gebauer, Gerhard; Zeller, Bernd; Schmidt, G.; May, Christian; Buchmann, Nina; Colin-Belgrand, Micheline; Dambrine, Étienne; Martin, Francis; Schulze, Ernst Detlef; Bottner, P.

doi:10.1007/978-3-642-57219-7_7

Cited by 32 publications

(30 citation statements)

References 34 publications

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“…As in other studies (Buchmann et al 1996, Koopmans et al 1996, Nadelhoffer et al 1999a, Gebauer et al 2000, under ambient atmospheric deposition the largest proportion of atmospheric N was retained in the soil of the Norway spruce forest at Solling (Table 4.6). Furthermore, the results showed a very high retention of atmospheric ammonium and a low retention of atmospheric nitrate in the organic layer in the roof control plot.…”

Section: Soilsupporting

confidence: 78%

Partitioning of atmospheric nitrogen under long-term reduced atmospheric deposition conditions in a Norway spruce forest ecosystem

Zhang¹

2010

Göttinger Forstwissenschaften

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Section: Soilsupporting

confidence: 78%

Partitioning of atmospheric nitrogen under long-term reduced atmospheric deposition conditions in a Norway spruce forest ecosystem

Zhang¹

2010

Göttinger Forstwissenschaften

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“…In studies where 15 N was added to the soil surface as NH 4 in stands of deciduous trees as well as Norway spruce, considerable variation was found in the amount recovered in the tree biomass. From less than 4% to more than 80% of the added 15 N was incorporated into the biomass (Nadelhoffer et al 1999;Gebauer et al 2000). This variation may depend partly on differences in soil conditions.…”

Section: Discussionmentioning

confidence: 99%

“…The stable isotope 15 N has also been used to investigate the vertical distribution of uptake in agroforestry systems (Rowe et al 1999;Lehmann et al 2001b). However, in forests 15 N has mainly been used to estimate the capacity to take up 15 N applied to the soil surface (Buchmann et al 1995;Nadelhoffer et al 1999;Gebauer et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Nutrient acquisition from different soil depths by pedunculate oak

Göransson

Rosengren

Wallander

et al. 2005

Trees

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Eight oak trees (Quercus robur L.) received 32 P at a soil depth of 50 cm and 33 P at a soil depth of 15 cm at the end of June 2002 through plastic tubes inserted into the mineral soil. The phosphorus uptake from different soil depths was estimated by analysing the concentration of 32 P and 33 P in the foliage of oak growing in a mixed stand in southern Sweden. 32 P and 33 P were recovered in the leaves/needles after 21 and 39 days. The recovery of labelled P in oak was higher from 15 cm soil depth than from 50 cm, however, more than 4% of the total amount of labelled P was taken up from 50 cm. This indicates that oak can utilize deep soil layers for nutrient uptake. A study on the uptake of Cs (as an analogue to K) and 15 N into the leaves was performed on the same trees and detectable amounts of 15 N and Cs were recovered in leaves and buds. This indicates that 15 N and Cs can be used to study nutrient uptake of mature trees from the mineral soil.

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“…However, ROMUL does not account for such N immobilisation by micro-organisms, which actually increases the absolute N content above the initial amount of N in the decaying litter cohorts (Berg and Söderström, 1979;Berg and Staaf, 1981;Staaf and Berg, 1982;Berg and Theander, 1984;Berg, 1988;Hasegava and Takeda, 1996;Gebauer et al, 2000;Palviainen et al, 2004).…”

Section: Organic Matter Decomposition and N Mineralisationmentioning

confidence: 99%

Water and nitrogen processes along a typical water flowpath and streamwater exports from a forested catchment and changes after clear-cutting: a modelling study

Laurén¹,

Finér

Koivusalo³

et al. 2005

Hydrol. Earth Syst. Sci.

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A two dimensional model, FEMMA, to describe water and nitrogen (N) fluxes within and from a forested first-order catchment (Kangasvaara in Eastern Finland) was constructed by linking the most significant processes affecting the fluxes of water, ammonium, nitrate and dissolved organic nitrogen along a hillslope from the water divide to the stream. The hillslope represents the average flowpath of water in the catchment and the model was used to estimate the N fluxes for a catchment in eastern Finland before and after clear-cutting. The simulated results were in reasonable agreement with the nitrate, dissolved organic N and dissolved total N measurements from the study catchment and with other results in the literature. According to the simulations, the major sinks of N after clear-cutting were immobilisation by soil microbes, uptake by ground vegetation and sorption to soil. These sinks increased downslope from the clear-cut area, indicating the importance of an uncut buffer zone between the stream and the clear-cut area in reducing N exports. The buffer zone retained 76% of the N flux coming from the clear-cut area. Nitrification was a key process in controlling the N export after clear-cutting and N increases were mainly as nitrate. Most of the annual N export took place during the spring flood, when uptake of N by plants was minimal.

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The Fate of 15N-Labelled Nitrogen Inputs to Coniferous and Broadleaf Forests

Cited by 32 publications

References 34 publications

Partitioning of atmospheric nitrogen under long-term reduced atmospheric deposition conditions in a Norway spruce forest ecosystem

Partitioning of atmospheric nitrogen under long-term reduced atmospheric deposition conditions in a Norway spruce forest ecosystem

Nutrient acquisition from different soil depths by pedunculate oak

Water and nitrogen processes along a typical water flowpath and streamwater exports from a forested catchment and changes after clear-cutting: a modelling study

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