Natural Environment Monitoring 2007, No 8, 57-63
THE VARIABILITY OF CHEMICAL COMPOSITION IN WATER CIRCULATION IN LAKE GARDNO CATCHMENT ON THE WOLIN ISLAND IN 1997-2005
The variability of chemical composition in water circulation in Lake Gardno catchment on the Wolin Island in 1997-2005 years shows that the result of a physico-chemical transformation of precipitation in the canopy of beech trees, the rainfall is enriched in most of the ions. The loads of hydrogen ions reaching the forest floor show variability correlated with the vegetation season. With the start of the beech growing season in April, the adsorption of hydrogen ions can be observed. The buffering ability of assimilation organs persists throughout the entire season, reducing the number of protons reaching the forest floor even by 99%. The effect is a substantial enrichment of water solutions getting to this part of the forest in potassium, calcium and magnesium loads. The volume of proton loads delivered to the forest floor in the non-growing season is more than 16 times greater. The Mineralization of water circulation in Lake Gardno catchment is lowest in the precipitation (14,5 g •dm-3). In biosphere reaches 37,2 mg •dm-3 (throughfall and stemflow). In lithosphere reaches over 300 mg •dm-3 (inflow, surface waters, and groundwaters on the two levels).