In the paper we interpret the results of a 14-year long research project on Mg input on a clear-cut area (plot H) and in a 100-year old beech stand (plot K), both situated at the Ecological Experimental Station (48 38degreesN, 19 04degreesE) belonging to the Institute of Forest Ecology of the Slovak Academy of Sciences in Zvolen. We have found that the mean yearly value of Mg input calculated for the whole research period was evidently higher in the forest (3.56 kg) compared to the clear-cut area (2.99 kg). Analysis of seasons performed on both plots had shown that the highest input values were detected in autumn, the lowest in winter period. The mean annual enrichment coefficient was 1.2 which means that magnesium amounts reaching the forest soil surface after they have passed through the crown canopy are increasing in terms of long-term mean by 20% compared to the open area. Dealing with the individual seasons, the enrichment in summer months is zero. The highest is in winter when it is accumulated by over 60%. The research period can be divided in two parts. The magnesium inputs on both plots in 1986-1995 (1996) were substantially higher (by 45-60%) than in the succeeding period that finished in 2000. In the tables we summarise and in the text we evaluate several statistical characteristics that closely describe the samples of Mg2+ deposition collected during the 14-year observation period.