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Water, Air, and Soil Pollution

, Volume 85, Issue 3, pp 1137–1142 | Cite as

Acidification and nutrient imbalance in forest soils subjected to nitrogen deposition

  • M. I. Makarov
  • V. V. Kiseleva
Part I Soil Acidification Including Nutrient Imbalances

Abstract

Emission of nitrogen oxides (NOx) and ammonia (NH3) from a fertilizer factory and the resulting input of nitrates (NO3) and ammonium (NH4+) into the soil were the main reasons of nitrogen (N) cycle disturbance in forest ecosystems near Novgorod, North-Western Russia (50°31′ North, 31°17′ East). Total N atmospheric input was about 100 kg/ha annually. NH3 was a dominant pollutant, causing the increase of atmospheric precipitation pH within the polluted region compared to background territories (6.0–6.5 and 4.5–5.0, respectively). Soil acidification through NH4+ nitrification was observed. N-NO3 concentrations in soil solution reached 20–30 mg/l, and proton (H) production was equal to 4.1 keq/ha per warm season (from April to October). Compared with soil status in 1983, pH decrease by 0.2 pH units was found in A horizon. The content of exchangeable calcium (Ca) and magnesium (Mg) decreased by the factor of 2–3 and 1.5–2 in A and B horizons, respectively. Triple increase of exchangeable aluminium (Al) content was detected in A horizon. Through recent decrease of pollutant emission, the polluted territory is now a suitable subject for recovery studies.

Keywords

Nitrogen Oxide Warm Season Pollutant Emission Nitrogen Deposition Atmospheric Precipitation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • M. I. Makarov
    • 1
  • V. V. Kiseleva
    • 1
  1. 1.Department of Soil ScienceMoscow State UniversityMoscowRussia

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