A simple model was established for calculating theoretical concentrations of cations in bog water, taking into account the effect of potential evapotranspiration. The actual concentrations of cations in bog water were then compared with the theoretical ones and this allowed to define different seasonal patterns of cation concentrations. Sodium accumulated in bog water with respect to precipitation, to an extent far exceeding the enrichment due to evaporation. A possible explanation of this resides in a surface enrichment owing to capillary flow. Potassium, and to a lesser extent magnesium, accumulated in spring and autumn but were actively removed by plants in summer. Calcium was removed outside the growing season by cation exchange on peat. -from Author
Seasonal changes in water chemistry in a bog on the southern Alps
BRAGAZZA, Luca
1993
Abstract
A simple model was established for calculating theoretical concentrations of cations in bog water, taking into account the effect of potential evapotranspiration. The actual concentrations of cations in bog water were then compared with the theoretical ones and this allowed to define different seasonal patterns of cation concentrations. Sodium accumulated in bog water with respect to precipitation, to an extent far exceeding the enrichment due to evaporation. A possible explanation of this resides in a surface enrichment owing to capillary flow. Potassium, and to a lesser extent magnesium, accumulated in spring and autumn but were actively removed by plants in summer. Calcium was removed outside the growing season by cation exchange on peat. -from AuthorI documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
