In summary, almost all parameters (28 out of the 30 parameters)
differed at different soil depth, and 19 out of the 30 parameters
showed significant influences from stand age or interaction
(stand age* soil depth). Of them, eight parameters showed that
the forest growth-induced changes were dependent on soil depth
(marked interactions), 11 soil parameters showed significant temporal
changes independent of soil depth, and the other 11 soil
parameters showed no temporal changes during forest development
(Table 1). The following results are based on the division of
the parameters into the above-mentioned 3 groups.