Element turnover in a heavily damaged Norway spruce ecosystem influenced by N deposition

1993 ◽  
Vol 152 (2) ◽  
pp. 277-285 ◽  
Author(s):  
W. Schaaf ◽  
W. Zech
Keyword(s):  
Norway Spruce ◽  
N Deposition ◽  
Element Turnover

Nitrate in soil water in three Norway spruce stands in southwest Sweden as related to N-deposition and soil, stand, and foliage properties

1996 ◽  
Vol 26 (5) ◽  
pp. 836-848 ◽  
Author(s):  
Hans-Örjan Nohrstedt ◽  
Ulf Sikström ◽  
Eva Ring ◽  
Torgny Näsholm ◽  
Peter Högberg ◽  
...  
Keyword(s):  
Soil Water ◽  
Norway Spruce ◽  
N Deposition ◽  
Forest Growth ◽  
Soil Conditions ◽  
N Leaching ◽  
N Saturation ◽  
Potential Nitrification ◽  
Nitrate Concentrations ◽  
The Difference

N-cycling was studied at three Norway spruce (Piceaabies (L.) Karst.) sites located within a distance of 30 km in southwest Sweden. Nitrate concentrations in soil water at 50-cm depth differed substantially between the three sites, annual site means being 0, 1, and 9 mg N•L−1. Using simulated runoff, the leaching of inorganic N from the two sites with the highest concentrations was estimated at, respectively, 7–8 and 19–30 kg•ha−1 during the hydrological year 1991–1992. The N-deposition measured as throughfall was 31 kg•ha−1 on the second site, suggesting that it was close to being N-saturated. The differences in nitrate concentration and estimated leaching across sites were not related to differences in forest growth or suggested symptoms of forest decline, such as canopy defoliation and nutrient deficiency. Nitrate concentrations were unrelated to N-deposition in an open field, but positively related to N-deposition in throughfall. However, the difference in N-leaching between the two main sites was much larger than the difference in N-deposition in throughfall. The difference in leaching seemed related to soil conditions. The soil with the highest leaching had the largest potential nitrification and a low C/N ratio (17–20) in the upper part of the profile. Nitrate concentrations in the soil water were positively related to the concentrations of arginine and 15N in foliage, which supports the use of these two variables as indicators of forests approaching N-saturation.

scholarly journals Isotope ratios and concentration of N in needles, roots and soils of Norway spruce (Picea abies [L.] Karst.) stands as influenced by atmospheric deposition of N

2012 ◽  
Vol 51 (No. 10) ◽  
pp. 468-475 ◽  
Author(s):  
S. P Sah
Keyword(s):  
Picea Abies ◽  
Atmospheric Deposition ◽  
Norway Spruce ◽  
Isotope Ratios ◽  
Vertical Gradient ◽  
N Deposition ◽  
Climatic Conditions ◽  
Polluted Site ◽  
Atmospheric N Deposition ◽  
N Enrichment

This study aims to investigate the changes in isotope ratios in foliage and soils of two Norway spruce&nbsp;(Picea abies [L.] Karst.) forests greatly differing in their atmospheric N deposition and climatic conditions. As expected, both N concentrations and &delta;<sup>15</sup>N values in needles and roots were found to be significantly higher in the Solling stand (N-saturated) compared to the Hyytial&auml; stand (N-poor). For both stands a typical vertical gradient of the soil <sup>15</sup>N-enrichment was observed. As expected, the soil of N-polluted site (Solling) was <sup>15</sup>N-enriched significantly more than that of N-limited site (Hyytial&auml;) and this is explained by the presence of marked NO<sub>3</sub><sup>&ndash;</sup> leaching at the Solling site. Although the annual trends (1990&ndash;1994) of N concentration in the foliage of spruce trees remained almost constant, their &delta;<sup>15</sup>N values significantly decreased with the increasing years of sampling. The <sup>15</sup>N-depletion in spruce needle litter from 1990 to 1995 was by 2.0&permil;. This is explained by a slight decrease in N deposition at Solling site during this period.

scholarly journals Fate of ammonium 15N in a Norway spruce forest under long-term reduction in atmospheric N deposition

2010 ◽  
Vol 107 (1-3) ◽  
pp. 409-422 ◽  
Author(s):  
Nicole Dörr ◽  
Klaus Kaiser ◽  
Leopold Sauheitl ◽  
Norbert Lamersdorf ◽  
C. Florian Stange ◽  
...  
Keyword(s):  
Norway Spruce ◽  
N Deposition ◽  
Spruce Forest ◽  
Atmospheric N Deposition ◽  
Norway Spruce Forest

Nitrogen distribution in young Norway spruce (Picea abies) trees as affected by pedospheric nitrogen supply

1997 ◽  
Vol 101 (4) ◽  
pp. 764-769 ◽  
Author(s):  
Heike Stoermer ◽  
Bettina Seith ◽  
Ulrike Hanemann ◽  
Eckhard George ◽  
Heinz Rennenberg
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Nitrogen Supply ◽  
Nitrogen Distribution
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