Relationships between Precipitation Chemistry, Hydrology, and Runoff Acidity.

摘要: High precipitation amounts of strongly varying ionic composition make the western parts southern Norway well-suited for studies certain relationships between chemistry, hydrology, and runoff acidity. Ions from sea-spray are predominant ions in these areas. The remaining almost exclusively acidifying compounds (H+, NH4+, SO42−, NO3−), negatively correlated to ions. Hydrochemical observations during 5 years confirm that Cl− and, a considerable extent, also SO42− move rather easily through catchments, while NO3− is adsorbed. acid top soil tends lead surface runoff, water penetrating deeper mineral soils becomes enriched Ca2+ depleted H+, resulting high correlation acidity rate. short-term variations thus governed largely by rate atmospheric deposits SO42−. In this particular climate yields fact negative acidity. A long-term acidification, indicated declining fish populations, does probably arise -increase (caused increased atmopheric deposition), change properties precipitation, possibly changed vegetation).