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  • SO4 2- release  (1)
  • nutrient status  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Effects of N-immissions on nutrient status and vitality ofPinus sylvestris near a hen-house (1989)
    Springer
    Plant and soil 113 (1989), S. 279-282 
    Details
    ISSN: 1573-5036
    Keywords: forest decline ; nitrogen immission ; nutrient status ; Pinus sylvestris
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Near a hen house (50–600 m), vitality ofPinus sylvestris, N-, P-, K-, Ca-, Mg-contents of the needles, N-, Mg-, K-, Ca- and Al-contents in soil extracts and NH3/NH 4 + -contents of the air were determined. Damage symptoms occurred when N-immissions hit the canopy directly. In contrast no visible decline of the above ground plant could be observed if N was mainly deposited on the soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02280193
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of the Soil Solution Composition on Retention and Release of Sulfate in Acid Forest Soils (1998)
    Springer
    Water, air & soil pollution 101 (1998), S. 363-376 
    Details
    ISSN: 1573-2932
    Keywords: salt effect ; SO4 ; SO4 2- release ; SO4 2- retention
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The potential for sulfate retention is an important soil feature for buffering of atmospheric acid deposition. We studied the effects of increasing additions of different neutral salts and acids on mobilization and retention of SO4 2- in acid forest soils. Soils containing up to 11 mmol SO4 2- kg-1 were equilibrated with H2O, NaCl, MgCl2, and HCl. Release of SO4 2- was highest with H2O and NaCl additions and lowest when HCl was used. Increasing the ionic strength of the added solutions caused decreasing SO4 2- concentrations in equilibrium solution. Decreasing pH in equilibrium solution was found to be the reason for the decrease in release. Even when the pH was 〈 4, the SO4 2- release decreased. We assume that this finding resulted from the fact that in the soils studied the SO4 2- sorption was controlled by the high contents of Fe oxides/hydroxides. Experiments with Na2SO4, MgSO4, and H2SO4 demonstrated that the B horizons already containing high amounts of SO4 2- were still able to retain SO4 2-. Sulfate retention increased in the order Na2SO4 〈 MgSO4 〈 H2SO4, which corresponds to increasing H+ availability. The higher SO4 2- retention along with MgSO4 compared to Na2SO4 may be caused by higher potential of Mg to mobilize soil acidity compared to Na.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004902602295
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