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Soil N chemistry in oak forests along a nitrogen deposition gradient

Nilsson, Lars Ola LU ; Wallander, Håkan LU orcid ; Bååth, Erland LU and Falkengren-Grerup, Ursula LU (2006) In Biogeochemistry 80(1). p.43-55
Abstract
Anthropogenic N deposition may change soil conditions in forest ecosystems as demonstrated in many studies of coniferous forests, whereas results from deciduous forests are relatively scarce. Therefore the influence of N deposition on several variables was studied in situ in 45 oak-dominated deciduous forests along a N deposition gradient in southern Sweden, where the deposition ranged from 10 to 20 kg N ha(-1) year(-1). Locally estimated NO3- deposition, as measured with ion-exchange resins (IER) on the soil surface, and grass N concentration (%) were positively correlated with earlier modelled regional N deposition. Furthermore, the delta N-15 values of grass and uppermost soil layers were negatively correlated with earlier modelled N... (More)
Anthropogenic N deposition may change soil conditions in forest ecosystems as demonstrated in many studies of coniferous forests, whereas results from deciduous forests are relatively scarce. Therefore the influence of N deposition on several variables was studied in situ in 45 oak-dominated deciduous forests along a N deposition gradient in southern Sweden, where the deposition ranged from 10 to 20 kg N ha(-1) year(-1). Locally estimated NO3- deposition, as measured with ion-exchange resins (IER) on the soil surface, and grass N concentration (%) were positively correlated with earlier modelled regional N deposition. Furthermore, the delta N-15 values of grass and uppermost soil layers were negatively correlated with earlier modelled N deposition. The data on soil NO3-, measured with IER in the soil, and grass N concentration suggest increased soil N availability as a result of N deposition. The delta N-15 values of grass and uppermost soil layers indicate increased nitrification rates in high N deposition sites, but no large downward movements of NO3- in these soils. Only a few sites had NO3- concentrations exceeding 1 mg N 1(-1) in soil solution at 50 cm depth, which showed that N deposition to these acid oak-dominated forests has not yet resulted in extensive leaching of N. The d15N enrichment factor was the variable best correlated with NO3- concentrations at 50 cm and is thus a variable that potentially may be used to predict leaching of NO3- from forest soils. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Biogeochemistry
volume
80
issue
1
pages
43 - 55
publisher
Springer
external identifiers
  • wos:000240016200003
  • scopus:33747711331
ISSN
1573-515X
DOI
10.1007/s10533-005-6220-x
language
English
LU publication?
yes
id
3d90308b-e23b-48be-810d-ce02fdcd5006 (old id 162609)
date added to LUP
2016-04-01 11:51:15
date last changed
2021-10-06 01:22:28
@article{3d90308b-e23b-48be-810d-ce02fdcd5006,
  abstract     = {Anthropogenic N deposition may change soil conditions in forest ecosystems as demonstrated in many studies of coniferous forests, whereas results from deciduous forests are relatively scarce. Therefore the influence of N deposition on several variables was studied in situ in 45 oak-dominated deciduous forests along a N deposition gradient in southern Sweden, where the deposition ranged from 10 to 20 kg N ha(-1) year(-1). Locally estimated NO3- deposition, as measured with ion-exchange resins (IER) on the soil surface, and grass N concentration (%) were positively correlated with earlier modelled regional N deposition. Furthermore, the delta N-15 values of grass and uppermost soil layers were negatively correlated with earlier modelled N deposition. The data on soil NO3-, measured with IER in the soil, and grass N concentration suggest increased soil N availability as a result of N deposition. The delta N-15 values of grass and uppermost soil layers indicate increased nitrification rates in high N deposition sites, but no large downward movements of NO3- in these soils. Only a few sites had NO3- concentrations exceeding 1 mg N 1(-1) in soil solution at 50 cm depth, which showed that N deposition to these acid oak-dominated forests has not yet resulted in extensive leaching of N. The d15N enrichment factor was the variable best correlated with NO3- concentrations at 50 cm and is thus a variable that potentially may be used to predict leaching of NO3- from forest soils.},
  author       = {Nilsson, Lars Ola and Wallander, Håkan and Bååth, Erland and Falkengren-Grerup, Ursula},
  issn         = {1573-515X},
  language     = {eng},
  number       = {1},
  pages        = {43--55},
  publisher    = {Springer},
  series       = {Biogeochemistry},
  title        = {Soil N chemistry in oak forests along a nitrogen deposition gradient},
  url          = {http://dx.doi.org/10.1007/s10533-005-6220-x},
  doi          = {10.1007/s10533-005-6220-x},
  volume       = {80},
  year         = {2006},
}