Zonal features of Al-Fe-humus pedogenesis on moraine deposits in the Kola Peninsula

Zonal differences in the genetic features of Al-Fe-humus podzols developed from moraine deposits in the tundra, forest-tundra, and northern taiga zones are revealed. The coefficient of profile differentiation of podzols with respect to the bulk content of aluminum increases from the tundra (1.16) to northern taiga (1.33); the analogous coefficient calculated with respect to the bulk content of iron increases in the same direction from 1.63 to 3.73. The zonal differences related to the contents of the amorphous forms of aluminum and iron are more contrasting: the coefficients of the profile differentiation increase from 4–6 in the tundra to 20–39 in the taiga. Differences in the humus contents of podzols developed in different natural zones are mainly seen in the podzolic horizon.