... The buffering of the organic horizons of forest soils (26-240 mmol/kg) exceeds mineral horizons' one by almost one order. ... The organic horizons are an important barrier protecting mineral horizons against acidification. ...
... A significant increasing trend of exchangeable acidity in organic (O) horizons and exchangeable Al in podzolic (E) horizons of podzols with distance from the nickel smelter was observed. ...
... The organic horizon of podzols appeared to be the important accumulator of heavy metals and the barrier against transport of pollution to underlying mineral horizons. ...
... The organic horizon of podzols appeared to be the important accumulator of heavy metals and the barrier against transport of pollution to underlying mineral horizons. ...
... The concentrations of mobile Ni and Cu (up to 60 and 64 mmol/kg) in soil organic horizon near the smelter were approximately two to three orders of magnitude higher than the background levels (0.04 and 0.02 mmol/kg) in the region. ...
... of soil organic horizons which first of all horizons receive acid rainwater ... by the soil organic horizons exceeds that by the mineral horizons by almost one ... horizons can completely neutralize the present acid load, protecting mineral horizons ...
... horizon of podzols appeared to be the important accumulator of heavy metals and the ... in the upper horizons under strong acidification and in the mineral horizons under ...
... while acidity decrease in lower soil mineral horizons towards the pollution source ... towards the smelter in lower mineral horizons due to geological inheritance, they do ...
... Negative correlation of exchangeable acidity with Ca 2+ in organic horizons and positive correlation with Ca 2+ and Mg 2+ in eluvial horizons demonstrated possible replacement, enlarged mobility and leaching of Ca 2+ and Mg 2+ in acid conditions. ...