Assessments of Impacts of Nitrogen Deposition on Beech Forests: Results from the Pan-European Intensive Monitoring Programme

Eichhorn, Johannes; Haussmann, T.; Paar, Uwe; Reinds, G.J.; Vries, Wim de

doi:10.1100/tsw.2001.325

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…As an example, the measurement years are indicated for the Alptal site N input. Some other studies, however, have documented a relationship between foliar N concentrations and deposition for broadleaved species (Boggs et al 2007;Eichhorn et al 2001). Eichhorn et al (2001) found a significant positive correlation between foliar N concentrations and NH 4 ?…”

Section: Nitrate Leachingmentioning

confidence: 94%

Does exceeding the critical loads for nitrogen alter nitrate leaching, the nutrient status of trees and their crown condition at Swiss Long-term Forest Ecosystem Research (LWF) sites?

et al. 2009

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Nitrogen (N) deposition exceeds the critical loads for this element in most parts of Switzerland apart from the Alps. At 17 sites (8 broadleaved stands, 8 coniferous stands, and 1 mixed stand) of the Swiss Long-term Forest Ecosystem Research network, we are investigating whether N deposition is associated with the N status of the forest ecosystems. N deposition, assessed from throughfall measurements, was related to the following indicators: (1) nitrate leaching below the rooting zone (measured on a subset of 9 sites); (2) the N nutrition of the forest stand based on foliar analyses (16 sites); and (3) crown defoliation, a non specific indicator of tree vitality (all 17 sites). Nitrate leaching ranging from about 2 to 16 kg N ha -1 a -1 was observed at sites subjected to moderate to high total N deposition ([10 kg ha -1 a -1 ). The C/N ratio of the soil organic layer, or, when it was not present, of the upper 5 cm of the mineral soil, together with the pool of organic carbon in the soil, played a critical role, as previous studies have also found. In addition, the humus type may need to be considered as well. For instance, little nitrate leaching (\2 kg N ha -1 a -1 ) was recorded at the Novaggio site, which is subjected to high total N deposition ([30 kg ha -1 a -1 ) but characterized by a C/N ratio of 24, large organic C stocks, and a moder humus type. Foliar N concentrations correlated with N deposition in both broadleaved and coniferous stands. In half of the coniferous stands, foliar N concentrations were in the deficiency range. Crown defoliation tended to be negatively correlated with N concentrations in the needles. In the majority of the broadleaved stands, foliar N concentrations were in the optimum nutritional range or, on one beech plot with high total N deposition ([25 kg ha -1 a -1 ), above the optimum values. There was no correlation between the crown defoliation of broadleaved trees and foliar concentrations.

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Section: Nitrate Leachingmentioning

confidence: 94%

Does exceeding the critical loads for nitrogen alter nitrate leaching, the nutrient status of trees and their crown condition at Swiss Long-term Forest Ecosystem Research (LWF) sites?

et al. 2009

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“…Deposition of N and S can cause soil acidification, leading to leaching of base cations and aluminium from the soil (Stoddard et al, 1999) and increased movement of nitrogen compounds and base cations into surface waters (Beier, Eckersten, & Gundersen, 2001). It has been proposed that more forest ecosystems will reach the stage of nitrogen saturation and that nitrogen leaching from soil may increase (Eichhorn, Haussmann, Paar, Reinds, & Vries, 2001).…”

Section: Introductionmentioning

confidence: 99%

Sulphate and Nitrate in Precipitation and Soil Water in Pine Forests in Latvia

Terauda

Nikodemus

2007

Water Air Soil Pollut: Focus

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The SO 4 -S and NO 3 -N concentrations and pH in bulk precipitation, throughfall, stemflow and soil water for the 1994-2004 period were studied in pine forests in Latvia (Rucava and Taurene Integrated Monitoring stations). The SO 4 -S and NO 3 -N concentrations decreased over the study period, simultaneously with a decrease of acidity in precipitation. The changes were more evident in the western part of Latvia, probably due to declining long-range air pollution from West Europe. The trend of decreasing sulphate concentrations and increasing pH in precipitation were not followed by respective changes in soil water. In the upper soil horizon sulphate ion concentrations and acidity increased in soil water. Over the observation period, nitrate concentrations also showed an increasing trend in soil water at Rucava and Taurene, but these changes were not statistically significant.

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“…Månsson and Falkengren-Grerup (2003) found that 17 kg ha -1 yr -1 of inorganic N in bulk deposition caused five times as much nitrification in the Oh horizons of deciduous forests in Sweden as 10 kg ha -1 yr -1 . The average nitrate N leaching flux in European beech forests is 4.1 kg ha -1 yr -1 (Eichhon et al 2001), whereas our beech forest showed a maximum flux of nitrate N losses of 1.46 kg ha -1 yr -1 in the year [2002][2003]. The effect of low soil pH (like that in our beech plot) on nitrification is controversial.…”

Section: Nitrogen In Stream Watermentioning

confidence: 99%

Nitrogen cycling in a mature mountainous beech forest

Michopoulos¹,

Baloutsos²,

Economou³

2008

Silva Fenn.

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The nitrogen cycle in a mature, mountainous European beech (Fagus sylvatica) forest in Greece was examined for two hydrological years, 2001â2002 and 2002â2003. Bulk deposition was 1383 mm in 2001â2002 and 2392 mm in 2002â2003. Winter temperatures were mild in the first year and low in the second year. Despite these climatological differences, the inorganic N inputs to the forest floor, by means of throughfall and stemflow, were quite similar for the two years, i.e. 12.4 and 14.6 kg ha yr. Litterfall production was significantly (p < 0.05) higher in the second year but the N amounts in litterfall did not differ. The ratio of N/P in foliar tissue did not change significantly in 2003 compared with ratio values in the last years. The N amounts used for the annual stem and branch increments are rather high preventing, in this way, some nitrogen from being recycled in the near future. The total soil N content to a depth of 80 cm amounted to more than 5000 kg ha, and the C/N ratio in the Oh horizon was approximately 15 but the beech forest did not appear susceptible to N leaching. The concentrations of ammonium and nitrate N in stream water did not reach high values reported in the literature, and did not differ significantly in the two hydrological years. The fluxes of inorganic N in throughfall plus stemflow were higher than those in stream water indicating N retention in soil. Another reason for N retention in the ecosystem is probably the large difference between N requirements and uptake indicating N deficiency. Despite the maturity of the beech trees, the low C/N ratio in the Oh horizon and the relatively high N content in soil, the forest can be considered to be neither saturated nor having reached a N saturation transition stage.â1â1â1

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Assessments of Impacts of Nitrogen Deposition on Beech Forests: Results from the Pan-European Intensive Monitoring Programme

Cited by 7 publications

References 8 publications

Does exceeding the critical loads for nitrogen alter nitrate leaching, the nutrient status of trees and their crown condition at Swiss Long-term Forest Ecosystem Research (LWF) sites?

Does exceeding the critical loads for nitrogen alter nitrate leaching, the nutrient status of trees and their crown condition at Swiss Long-term Forest Ecosystem Research (LWF) sites?

Sulphate and Nitrate in Precipitation and Soil Water in Pine Forests in Latvia

Nitrogen cycling in a mature mountainous beech forest

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