For N and P, contrary changes between surface and deep-layer
soils were found in the distribution percentage (Fig. 1). For the
0–20 cm layer of the soil, approximately 51.2% of the N was found
in >40-yr larch forests, and the percentage in 40-
yr larch forests, while more N (13.7–26.2%) was distributed in
40-yr age group compared
to the