出版社：Forestry Commission of the Hungarian Academy of Sciences
摘要：Abstract – In the DIRT (Detritus Input and Removal Treatment) field experiments established at the
Síkfőkút Site (North Hungary) in October 2000, an experiment was initiated to study the long-term
effects of litter quality and quantity on pH and nutrient content (organic carbon, N forms, PO
4
3–
, K
+
,
Mg
2+
, Ca
2+
) of soil in a Quercetum petraeae-cerris forest. An eight-year litter manipulation
demonstrated a close connection between the changes in pH and Mg
2+
and Ca
2+
concentration. The
decline of litter production, the decrease of the soil pH due to lower Mg
2+
and Ca
2+
input lead to
consequent reduction of soil buffering capacity. The acidification interferes with the decomposition
process of litter and humus compounds. Our results suggest decreases in organic matter content, total
N, Ca
2+
and Mg
2+
concentrations in the soil as a consequence of decline in forest litter production
induced by climate change and a resulting degradation of the soil over a longer period.
