Kozhevnikova N. K., Lutsenko T. N., Boldeskul A. G., Lupakov S. Yu., Shamov V. V. Water Migration of Macroelements in Coniferous-Broad-Leaved Forests of Sikhote-Alin
How to cite: Kozhevnikova N. K.1, Lutsenko T. N.2, Boldeskul A. G.2, Lupakov S. Yu.2, Shamov V. V.2 Water migration of macroelements in coniferous-broad-leaved forests of Sikhote-Alin // Sibirskij Lesnoj Zurnal (Sib. J. For. Sci.). 2017. N. 3: 60–73 (in Russian with English abstract).
© Kozhevnikova N. K., Lutsenko T. N., Boldeskul A. G., Lupakov S. Yu., Shamov V. V., 2017
In the paper, the natural water chemical composition spatial variability studies results in the mountain forest catchment are presented. It’s shown that the catchment biotic components’ impact upon water chemical composition is detected even at input as atmospheric precipitation. The input fluxes are acid, sulfate ones with high ratio of hydrogen, potassium and dissolved organic matter. Diversity of ecotopic conditions determines the further transformation of natural water chemical composition. The role of tree crowns in the transformation increases while the crown closure and stands’ age increase. According to macrocomponents transformation and rain acidity neutralization, forest associations form the sequence: mixed > coniferous > young deciduous ones. Dissolved organic carbon (DOC), potassium and calcium become the main components of water chemical composition, while sulfates dominate among anions. For vegetation period, 9–11 kg/ha of sulfates come below tree crown. Biogenic elements transport is gradually limited in soil profile at the migration stage. Sulfate-potassium composition throughfall in spruce-fir and secondary forests community transforms into sulfate-sodium-calcium. Hydrocarbonates predominate in soil water in broad-leaved-pine type of forest, and potassium output decreases 10 times. Geochemical type of river water keeps features of chemical composition of soil drained by river section. Negligible output of sulfates, hydrocarbonates and calcium from ecosystem is established for the headwaters. Negative balance of hydrocarbonates and calcium is compensated by significant input of these components with throughfall at catchments with predominantly pine-broad-leaved forest types.